Rubicon Logan Fishing Bumper Sub User manual

Fishing
Bumper Sub
Manual D450

Manual D450 • Fishing Bumper Subs • Page 1
Contents
Fishing Bumper Sub
Overview.................................................................................2
Use.........................................................................................2
Construction ...........................................................................2
Illustration...............................................................................3
Operation................................................................................4
Fishing Operations..............................................................4
Drilling Operations ..............................................................4
Applying a Downward Blow ................................................4
Applying an Upward Blow...................................................4
Feeding-Off.........................................................................4
Assembly................................................................................4
Knocker Seal/Ring Installation............................................5
Maintenance...........................................................................7
Complete Disassembly.......................................................7
Complete Assemblies and Parts Lists............................8 – 19
Strength Data ...............................................................20 – 22
Recommended Tightening Torques......................................23
Logan Fishing Bumper Sub • 1
LEGAL NOTICE
All references to Bowen®part numbers in this literature are
used to identify interchangeable tools and parts. Reference to
such tools and parts does not imply that Logan Oil Tools is a
licensee or is in any way afliated with National Oilwell Varco.
Logan Oil Tools does not sell, or offer to sell, National Oilwell
Varco (Bowen) products.
“Bowen” is a registered trademark of National Oilwell Varco.
2nd Printing, September 2012. Rev. 1

Page 2 • Fishing Bumper Subs • Manual D450
2 • Logan Fishing Bumper Sub
OVERVIEW
The Logan Fishing Bumper Sub is a
relatively inexpensive, dependable me-
chanical accessory tool that is suitable
for all shing operations — especially
harsh, downhole applications and deep
workover operations. It can also meet
the demands of tools that require sharp,
sustained bumping action to actuate
or release them.
The primary purpose of the Fishing
Bumper Sub is to enable the operator
to release the shing tool in the event
it becomes impossible to pull the sh.
It can provide the necessary vertical
impact in either direction — upward or
downward — and deliver the required
torque to release the tool from the sh
whether it is rotating or not. The tool’s
design allows full torque and unre-
stricted uid circulation at all times. The
Logan Fishing Bumper Sub can bump
up or down to engage or disengage
overshots or spears, or be used as a
feed-off tool in milling or cutting opera-
tions.
There are several secondary uses for
the Logan Fishing Bumper Sub: to
bump down, to bump a solid downward
blow, and to jar up in the hole. Other
typical operations include releasing
stuck drill pipe, drill collars, tubing, test
tools, and safety joints. The shing
bumper sub can be used in conjunction
with an overshot or spear.
USE
The Logan Fishing Bumper Sub is
especially suited for deep shing
operations and light to medium drilling
applications. Equally effective in either
direction, the tool is also ideal for coring
operations.
The Logan Fishing Bumper Sub deliv-
ers the sharp downward blow and
torque required to disengage a sh
when it is impossible to pull the sh.
The tool can repeatedly bump in either
direction or alternately bump up and
down to dislodge drill pipe, reamers,
drill collars, bits, or other tools that have
become stuck.
The immediate bumping action prevents
cuttings and cavings — especially sticky
caving or heavy mud formations —
from settling and wedging the drill string
making it well suited for light to medium
drilling operations. The tool is equally
effective in either direction. If neces-
sary, the operator can manipulate the
drill string and deliver forceful blows to
release the string. The free stroke fea-
ture enables the operator to accurately
control the weight on bit or other tools.
When properly used, this feature will aid
in maintaining a straighter hole, thereby
resulting in improved penetration and
less bit wear.
The Fishing Bumper Sub is also an
excellent safety device when working
in very deep, crooked holes, and drilling
out cement in heavy mud. The oper-
ator can manipulate the drill string as
needed and deliver forceful blows to
release the string if necessary.
The Logan Fishing Bumper Sub is also
an ideal tool for coring operations. The
bumping action effectively breaks cores
sharply and cleanly for easy removal.
CONSTRUCTION
All components of he Logan Fishing
Bumper Sub are constructed from high-
strength, heat-treated alloy steel to with-
stand severe stress caused by tension,
jarring, and torque.
The Fishing Bumper Sub is composed
of ve major parts: a mandrel, mandrel
body, middle body, knocker, and a top
sub. The critical seal point between
the middle body and knocker is tted
with a knocker seal/ring assembly con-
sisting of an o-ring seal, seal protector
ring, and a seal non-extrusion ring to
increase the life of the rings and prevent
o-ring extrusion.
The Logan Fishing Bumper Sub comes
with a standard box top connection and
a pin bottom connection. Special con-
nections, including left-hand threads,
are available upon request.
Mandrel
The hexagon-shaped mandrel ts into
the matching shape of the mandrel
body. The mandrel freely moves up and
down to provide a continuous source of
downhole torque transmission through
the mandrel body whether bumping or
not. The standard 20-inch stroke length
is suitable for most purposes, although
longer stroke lengths of 30, 36, 42, 48,
and 60 inches are available. The ends
of the mandrel are made up with a
knocker at the upper end and a mandrel
body on the lower end.
Mandrel Body
The mandrel body slides on over the
mandrel. The hexagon-shaped inside
diameter of the mandrel body matches
the shape of the mandrel. Transmitted
torque is conveyed to the running string
through the mandrel, middle body, and
attached tool.

Manual D450 • Fishing Bumper Subs • Page 3
Logan Fishing Bumper Sub • 3
Middle Body
The inside diameter of the middle body
is closely tted to the outside diameter
of the knocker and top sub at the upper
end. The inside diameter of the middle
body is closely tted to the mandrel
body at the lower end. The interior
surface is highly polished to reduce
frictional wear.
Knocker
The knocker screws onto the top of
the mandrel. A lock screw on the lower
end of the knocker tightens the knocker
against the mandrel to prevent rela-
tive movement. The knocker material
is specially selected for use in impact
loading. It is closely tted to restrict high
frequency lateral vibration (chatter) that
can shorten the life of the tool.
Knocker Seal/Ring Assembly
Two seal/ring assemblies are located
on the upper end of the knocker. Each
seal/ring assembly consists of an o-ring
seal, a seal protector ring, and a seal
non-extrusion ring. The non-extrusion
rings prevent the o-rings from being
pushed out or rolled out of position. As
hydraulic pressure is applied (in either
direction), these seal/ring assemblies
reduce normal diametric clearance at
the seal points to nearly zero.
Knocker seal rings, seal protector rings,
and non-extrusion rings are provided on
the standard knocker. Optional chevron
packing sets are available and are rec-
ommended when circulation through the
shing bumper sub will be extensive.
Top Sub
The top sub is tted to the upper end of
the middle body and has a box connec-
tion.
Top Sub
Knocker
Knocker Seal Ring
Non-Extrusion Ring
Seal Protector Ring
Middle
Body
Mandrel
Mandrel
Body
Knocker
Lock Screw

Page 4 • Fishing Bumper Subs • Manual D450
4 • Logan Fishing Bumper Sub
ASSEMBLY
Check all parts to ensure that they are
in good working condition before begin-
ning assembly. Make sure the tool is the
proper size for the operation.
Thoroughly clean and lubricate parts. If
the tool will be stored for a long period,
paint or lubricate the exterior surfaces
to prevent corrosion.
NOTE: Do not paint or lubricate the
seals. Paint, sunlight, solvents, and
most lubricants are harmful to rub-
ber products.
Refer to the photographs on page 5
and proceed with the knocker seal/ring
assembly installation as follows. If using
the optional chevron packing set, skip
to step 5.
1. Starting with the lowest groove, re-
place the knocker seals.
a.Carefully examine and thoroughly
clean each groove. Smooth out
any nicks or burrs with emery
cloth.
b.Matching the bevel of the non-
extrusion ring to the bevel of the
groove, slide the non-extrusion
ring over the knocker. Carefully
expand the non-extrusion ring
to t over the outside diameter of
the knocker. Do not expand the
non-extrusion ring more than
is absolutely necessary.
2. Press the seal protector ring into
the groove next to the non-extru-
sion ring with the thumbs until the
ring is rmly seated in the groove.
3. Install the O-rings:
a.Stretch the O-ring until it is large
enough to t around the knocker.
b.Insert the O-ring between the seal
protector ring and non-extrusion
ring.
OPERATION
The Logan Fishing Bumper Sub is
typically run directly above the spear,
overshot, screw-in sub, or safety joint.
The tool is designed to allow a verti-
cal stroke — upward or downward
— whether it is rotating or not, and is
always available to the operator. The
Fishing Bumper Sub will transmit full
torque at all times during rotation and
bumping operations.
When lift load is applied, the Fishing
Bumper Sub will slide open until the
knocker hits the mandrel body. Slack-
ing weight off the string will cause the
mandrel to slide back down the man-
drel body until the bottom shoulder of
the mandrel
hits the top shoulder of the
mandrel body.
Fishing Operations
A Fishing Bumper Sub should be in-
cluded in the shing string whenever a
releasing type shing tool will be used.
If it becomes impossible to pull the sh,
the operator will have means available
to release the shing tool. The Fish-
ing Bumper Sub will deliver a sharp
blow and transmit the torque required
to disengage and release a shing tool
from the sh.
A properly made-up Fishing Bumper
Sub is generally placed immediately
above the shing tool, safety joint, or
unlatching joint.
Drilling Operations
The Fishing Bumper Sub is generally
installed in the drill string immediately
above the drill collars.
Applying a Downward Blow
At the surface, mark the pipe to indicate
the open and closed positions of the
Fishing Bumper Sub. Raise the shing
string to open the full stroke length
(20 – 60 inches depending on the size
of the tool) and allow for extra string
stretch.
To deliver a sharp downward blow,
sharply drop the string and abruptly
stop with the brake approximately four
(4) to six (6) inches above the closed
position of the Fishing Bumper Sub. To
deliver a solid downward blow, drop the
full weight of the shing string without
braking. This will cause the lower end of
the shing string to drop downward and
the Fishing Bumper Sub will close. If the
shing string has sufcient stretch and
elasticity, the Fishing Bumper Sub will
then deliver a series of downward blows
to the tool below.
Applying an Upward Blow
At the surface, mark the pipe to indicate
the open and closed positions of the
Fishing Bumper Sub. Raise the shing
string to open the bumper sub and allow
for additional string stretch. Drop the
string by the amount of the stretch only
and stop it abruptly with the brake. As
the pipe rebounds at the bottom of the
hole, the Fishing Bumper Sub will quick-
ly reopen. This will cause the knocker to
strike the lower end of the mandrel body
with a solid upward blow.
Feeding-Off
When employing a Logan Fishing Bum-
per Sub as a feed-off tool, install the
Fishing Bumper Sub in a cutting string
several joints above a Logan Internal
Cutter. In this operation, a Fishing Bum-
per Sub with a 20-inch stroke will pick
up ten inches of the cutting string after
the cutter is set. Only the predetermined
weight of the pipe between the internal
cutter and the Fishing Bumper Sub
is applied to the cutter, thus ensuring
smooth operation of the cutter.

Manual D450 • Fishing Bumper Subs • Page 5
Logan Fishing Bumper Sub • 5
KNOCKER SEAL/RING ASSEMBLY INSTALLATION
Completed knocker assembly with seal protec-
tor rings, non-extrusion rings, and O-rings cor-
rectly installed in the upper and lower grooves.
Install the O-ring. Stretch the o-ring until it is
large enough to t around the knocker.
Using the O-ring installation tool, insert the
O-ring in the groove between the seal protector
ring and non-extrusion ring.
Repeat seal/ring installation procedure on the
upper groove.
Matching the bevel of the non-extrusion ring
to the bevel of the groove, carefully expand
the non-extrusion ring to t over the outside
diameter of the knocker. Do not expand the
non-extrusion ring more than absolutely neces-
sary. Slide the non-extrusion ring over the
knocker and into the groove.
Before installation, carefully examine and clean
each groove. Smooth out any nicks or burrs
with emery cloth.
With the aid of the O-ring installation tool
(Logan Part No. J1074, available upon request),
press the seal protector ring into the groove
next to the non-extrusion ring with the thumbs
until the ring is rmly seated in the groove.

Page 6 • Fishing Bumper Subs • Manual D450
Packing Ring Knocker
Chevron Packing
6 • Logan Fishing Bumper Sub
4. Repeat seal/ring installation proce-
dure on the upper groove. Skip to
step 6 to continue.
5. Install optional chevron packing
according to the diagram above.
Reinstall the packing ring and re-
tainer ring.
6. Securetheupper endofthe mandrel
body horizontally into a suitable
vise. Thoroughly coat the polished
surfaces with a good grade of clean,
lightweight oil.
CAUTION: Use only enough grip-
ping action in the vise to secure
the body. Avoid making heavy tool
marks.
7. Align the hexagon shapes of the
mandrel and mandrel body and slide
the mandrel through the bottom of
themandrelbody. Continuetogently
push the mandrel through until the
mandrel bumps against the mandrel
body. Do not force the mandrel —
themandrelshould freelymoveback
and forth. If resistance is encoun-
tered, remove the mandrel and
remove any foreign matter.
8. Lubricate and install the knocker
on the upper end of the mandrel.
Tighten.
9. Install the lock screw in the knocker.
Makesureit locksonto theundercut
provided on the mandrel.
10.Carefully slide the middle body over
the knocker and mandrel to avoid
damaging the knocker seals. Tight-
en the connection to the mandrel
body.
11. Install top sub on middle body.
Tighten the connection between
the top sub and the upper end
of the middle body.
12.Tighten all connections before run-
ning the tool in the hole. Refer to
the Tightening Torques table on
page 23.
13.Paint or lubricate exterior surfaces
to prevent corrosion. If the tool will
be stored outside, the exterior of
the tool should be cleaned and
painted, or coated with a heavy
application of grease.
Assembly is now complete and the tool
is ready for service.
If the tool will be stored for future ser-
vice, install thread protectors and apply
a good grade of thread dope to the tool
joints.
Male Adapter (2 Req’d)
Pressure Rings (10 Req’d)
Mandrel
Retainer Ring
Female Adapter (1 Req’d)

Manual D450 • Fishing Bumper Subs • Page 7
Logan Fishing Bumper Sub • 7
MAINTENANCE
The wear-resistant Logan Fishing Bum-
per Sub requires minimal maintenance.
Thoroughly wash the tool — inside and
out — and remove all drilling mud and
debris after each use. Lubricate cleaned
tool to prevent corrosion. The knocker
seal rings should be periodically exam-
ined for damage and wear. The tool
should be disassembled and the rings
replaced when damage is evident.
Complete Disassembly
Refer to the illustration on page 3 and
proceed with disassembly as follows:
CAUTION: Use only enough grip-
ping action in the vise to break the
connections. Avoid making heavy
tool marks.
1. Secure the Logan Fishing Bumper
Sub a suitable vise, approximately
in the middle of the mandrel body.
2. Remove the top sub and lay it aside.
3. Remove the middle body from the
mandrel body and lay it aside.
4. Back-off or remove the knocker lock
screw before removing the knocker
to prevent damage to the mandrel.
CAUTION: Before removing the
knocker, make certain the knocker
lock screw is removed or backed-off.
The knocker set screw could damage
the mandrel.
5. Remove the knocker from the
mandrel and lay it aside.
CAUTION: Do not wrench on the
hardfaced bands between the
wrench ats or gouge them with the
sides of the wrench jaws. If they are
inadvertently upset or otherwise
damaged, remove the upset or burr
with ne emery cloth or a hand le.
Clean and lubricate.
8. Slide the mandrel out through the
bottomofthe mandrelbody. Support
the weight of the mandrel with a
soft line or wire rope sling as it is
removed.
9. Remove the mandrel and lay it
aside.
10.Remove the mandrel body from the
vise and lay it aside.
11. Skip to step 15 if the optional chev-
ron packing set has been used.
12.Examine the knocker O-ring seals,
seal protector rings, and seal non-
extrusion rings for wear and/or
damage. Remove seals and rings
that show signs of wear and/or
damage.
a.Carefullyinsertthe tipof eitherthe
bent-tip installation tool* (Logan
Part No. J1073) or O-ring installa-
tion tool* (Logan Part No. J1074)
between the O-ring and the seal
protector ring. Carefully lift out the
O-ring, taking care not to damage
the seal protector ring or non-
extrusion ring.
CAUTION: Do not run the installation
tool around the groove under the
rings. This will scratch and damage
the grooves.
13.Examine the O-rings for damage or
distortion. Check the seal protector
rings and non-extrusion rings, using
the forenger to feel for burrs or
other damage.
14.Remove all damaged seal protector
rings and non-extrusion rings.
15.Inspect optional chevron packing
set (if used) by removing the
retainer ring and packing ring. Refer
to the diagram on page 5. Replace
chevron packing set if it is worn or
damaged.
16.Thoroughly clean all disassembled
parts in solvent and wipe dry with
a clean, soft cloth. Lubricate parts
with a thin coating of a good grade
of clean lightweight oil.
17.Examine all parts for defects,
especially polished surfaces, for
pits or scratches. Parts that have
become pitted or scratched must
be replaced with new parts prior
to reassembly.
18.Inspect the mandrel for upsets.
Grind off upsets with a small hand
le or grinder.
Disassembly is now complete.
* These installation tools are available from Logan upon request.

Page 8 • Fishing Bumper Subs • Manual D450
8 • Logan Fishing Bumper Sub
FISHING BUMPER SUB
CONNECTION 1-13/16 1-1/4 2-3/8 2-3/8 2-3/8 2-3/8 2-3/8
WFJ API REG EUE API REG API IF API IF EUE
OUTSIDE DIAMETER (INCHES) 1-13/16 2-1/4 3-1/8 3-5/32 3-3/8 3-3/4 3-3/4
INSIDE DIAMETER (INCHES) 3/8 1/2 1-17/32 1 1 1-1/2 1-7/8
STROKE (INCHES) 20 20 20 20 20 20 20
COMPLETE ASSEMBLY Logan Part No. 604-181 604-225 604-313 604-315 604-338 604-375 604-376
Bowen No. 10120 18785 42592 10105 10190 39887 39893
TOP SUB Logan Part No. AF1000 AF1001 AF10015 AF1002 AF10025 AF1003 AF1004
Bowen No. 10121 18786 42593 10106 10191 39888 39894
MANDREL BODY Logan Part No. AF2000 AF2001 AF20015 AF2002 AF20025 AF2003 AF2004
Bowen No. 10123 18788 42596 10108 10193 39890 39896
MIDDLE BODY Logan Part No. AF3000-20 AF3001-20 AF30015-20 AF3002-20 AF30025-20 AF3003-20 AF3004-20
(20-inch stroke) Bowen No. 10122 18787 42594 10107 10192 39889 39895
MANDREL Logan Part No. AF4000-20 AF4001-20 AF40015-20 AF4002-20 AF40025-20 AF4003-20 AF4004-20
(20-inch stroke) Bowen No. 10125 18789 42597 10110 10194 39891 39897
KNOCKER Logan Part No. AF5000 AF5001 AF50015 AF5002 AF50025 AF5003 AF5004
Bowen No. 10126 18790 42595 10111 10195 39892 39898
NON-EXTRUSION RING Logan Part No. L385-22 L385-27 L216-34 L387-6 L385-35 L216-38 L216-38
Bowen No. 385-22 385-27 216-34 387-6 385-35 216-38 216-38
No. Req’d 4 4 4 4 4 4 4
SEAL PROTECTOR RING Part No. L386-22 L386-27 L227-34 L388-6 L386-35 L227-38 L227-38
Bowen No. 386-22 386-27 227-34 388-6 386-35 227-38 227-38
No. Req’d 4 4 4 4 4 4 4
KNOCKER SEAL RING Logan Part No. 568-217 568-222 568-331 568-228 568-332 568-335 568-335
Bowen No. 568217 568222 568331 568228 568332 568335 568335
No. Req’d 2 2 2 2 2 2 2
KNOCKER LOCK SCREW Logan Part No. … … AF6001 AF6000 AF6000 AF6000 AF6001
Bowen No. … … 54775 48879 48879 48879 54775
Logan Oil Tools reserves the right to change or discontinue designs without notice.
Special Notes:
(1) Standard stroke for Bumper Subs is 20". Only the Mandrel and Middle Body need to be ordered to convert a standard 20" stroke assembly to one
of greater stroke length. All other parts interchange for a given size. When a long stroke assembly is ordered by assembly number, the entire tool
is ordered. To convert, order only the Mandrel and Middle Body by part number.
When ordering, please specify:
(1) Name and number of assembly or part
(2) Connections, if other than standard
(3) Stroke length
(4) O.D., if other than standard
Recommended Spare Parts:
(1) 8 Non-Extrusion Rings
(2) 8 Seal Protector Rings
(3) 16 Knocker Seals
LEGAL NOTICE
All references to Bowen®part numbers in this literature are used to
identify interchangeable tools and parts. Reference to such tools and
parts does not imply that Logan Oil Tools is a licensee or is in any
way afliated with National Oilwell Varco. Logan Oil Tools does not
sell, or offer to sell, National Oilwell Varco (Bowen) products.
“Bowen” is a registered trademark of National Oilwell Varco.

Manual D450 • Fishing Bumper Subs • Page 9
Logan Fishing Bumper Sub • 9
OPTIONAL ACCESSORIES
CHEVRON PACKING KNOCKER ASSEMBLY — BREAKDOWN:
COMPLETE ASSEMBLY Logan Part No. … … … … … … …
Bowen No. … … … … … … …
KNOCKER Logan Part No. … … … … … … …
Bowen No. … … … … … …
PACKING RING Logan Part No. … … … … … … …
Bowen No. … … … … … … …
CENTER RING Logan Part No. … … … … … … …
Bowen No. … … … … … … …
CHEVRON PACKING SET Logan Part No. … … … … … … …
Bowen No. … … … … … … …
RETAINING RING Logan Part No. … … … … … … …
Bowen No. … … … … … … …
PACKING RETAINER Logan Part No. … … … … … … …
Bowen No. … … … … … … …
No. Req’d … … … … … … …
Logan Oil Tools reserves the right to change or discontinue designs without notice.
Special Notes:
(1) Standard stroke for Bumper Subs is 20". Only the Mandrel and Middle Body need to be ordered to convert a standard 20" stroke assembly to one
of greater stroke length. All other parts interchange for a given size. When a long stroke assembly is ordered by assembly number, the entire tool
is ordered. To convert, order only the Mandrel and Middle Body by part number.
When ordering, please specify:
(1) Name and number of assembly or part
(2) Connections, if other than standard
(3) Stroke length
(4) O.D., if other than standard
Recommended Spare Parts:
(1) 8 Non-Extrusion Rings
(2) 8 Seal Protector Rings
(3) 16 Knocker Seals
FISHING BUMPER SUB
CONNECTION 1-13/16 1-1/4 2-3/8 2-3/8 2-3/8 2-3/8 2-3/8
WFJ API REG EUE API REG API IF API IF EUE
OUTSIDE DIAMETER (INCHES) 1-13/16 2-1/4 3-1/8 3-5/32 3-3/8 3-3/4 3-3/4
INSIDE DIAMETER (INCHES) 3/8 1/2 1-17/32 1 1 1-1/2 1-7/8
STROKE (INCHES) 20 20 20 20 20 20 20
COMPLETE ASSEMBLY Logan Part No. 604-181 604-225 604-313 604-315 604-338 604-375 604-376
Bowen No. 10120 18785 42592 10105 10190 39887 39893
LEGAL NOTICE
All references to Bowen®part numbers in this literature are used to
identify interchangeable tools and parts. Reference to such tools and
parts does not imply that Logan Oil Tools is a licensee or is in any
way afliated with National Oilwell Varco. Logan Oil Tools does not
sell, or offer to sell, National Oilwell Varco (Bowen) products.
“Bowen” is a registered trademark of National Oilwell Varco.

Page 10 • Fishing Bumper Subs • Manual D450
10 • Logan Fishing Bumper Sub
FISHING BUMPER SUB
CONNECTION 1-13/16 1-1/4 2-3/8 2-3/8 2-3/8 2-3/8 2-3/8
WFJ API Reg EUE API Reg API IF API IF EUE
OUTSIDE DIAMETER (INCHES) 1-13/16 2-1/4 3-1/8 3-5/32 3-3/8 3-3/4 3-3/4
INSIDE DIAMETER (INCHES) 3/8 1/2 1-17/32 1 1 1-1/2 1-7/8
30" STROKE
COMPLETE ASSEMBLY Logan Part No. 604-181 604-225 604-313 604-315 604-338 604-375 604-376
Bowen No. 29523 29529 46881 29535 29538 46863 46866
MANDREL Logan Part No. AF4000-30 AF4001-30 AF40015-30 AF4002-30 AF40025-30 AF4003-30 AF4004-30
Bowen No. 29524 29530 46882 29536 29539 46864 46867
MIDDLE BODY Logan Part No. AF3000-30 AF3001-30 AF30015-30 AF3002-30 AF30025-30 AF3003-30 AF3004-30
Bowen No. 29525 29531 46883 29537 29540 46865 46868
36" STROKE
COMPLETE ASSEMBLY Logan Part No. 604-181 604-225 604-313 604-315 604-338 604-375 604-376
Bowen No. 29574 29580 49608 29586 29589 46890 46893
MANDREL Logan Part No. AF4000-36 AF4001-36 AF40015-36 AF4002-36 AF40025-36 AF4003-36 AF4004-36
Bowen No. 29575 29581 46909 29587 29590 46891 46894
MIDDLE BODY Logan Part No. AF3000-36 AF3001-36 AF30015-36 AF3002-36 AF30025-36 AF3003-36 AF3004-36
Bowen No. 29576 29582 46910 29588 29591 46892 46895
42" STROKE
COMPLETE ASSEMBLY Logan Part No. 604-181 604-225 604-313 604-315 604-338 604-375 604-376
Bowen No. 29619 29625 46935 16933 29643 46917 46920
MANDREL Logan Part No. AF4000-42 AF4001-42 AF40015-42 AF4002-42 AF40025-42 AF4003-42 AF4004-42
Bowen No. 29620 29626 46936 16935 26944 46918 46921
MIDDLE BODY Logan Part No. AF3000-42 AF3001-42 AF30015-42 AF3002-42 AF30025-42 AF3003-42 AF3004-42
Bowen No. 29621 29627 46937 16934 26945 46919 46922
Logan Oil Tools reserves the right to change or discontinue designs without notice.
Special Notes:
(1) Standard stroke for Bumper Subs is 20". Only the Mandrel and Middle Body need to be ordered to convert a standard 20" stroke assembly to one
of greater stroke length. All other parts interchange for a given size. When a long stroke assembly is ordered by assembly number, the entire tool
is ordered. To convert, order only the Mandrel and Middle Body by part number.
When ordering, please specify:
(1) Name and number of assembly or part
(2) Connections, if other than standard
(3) Stroke length
(4) O.D., if other than standard
Recommended Spare Parts:
(1) 8 Non-Extrusion Rings
(2) 8 Seal Protector Rings
(3) 16 Knocker Seals
LEGAL NOTICE
All references to Bowen®part numbers in this literature are used to
identify interchangeable tools and parts. Reference to such tools and
parts does not imply that Logan Oil Tools is a licensee or is in any
way afliated with National Oilwell Varco. Logan Oil Tools does not
sell, or offer to sell, National Oilwell Varco (Bowen) products.
“Bowen” is a registered trademark of National Oilwell Varco.

Manual D450 • Fishing Bumper Subs • Page 11
Logan Fishing Bumper Sub • 11
FISHING BUMPER SUB
CONNECTION 1-13/16 1-1/4 2-3/8 2-3/8 2-3/8 2-3/8 2-3/8
WFJ API Reg EUE API Reg API IF API IF EUE
OUTSIDE DIAMETER (INCHES) 1-13/16 2-1/4 3-1/8 3-5/32 3-3/8 3-3/4 3-3/4
INSIDE DIAMETER (INCHES) 3/8 1/2 1-17/32 1 1 1-1/2 1-7/8
48" STROKE
COMPLETE ASSEMBLY Logan Part No. 604-181 604-225 604-313 604-315 604-338 604-375 604-376
Bowen No. 29682 29688 46962 16936 29694 46944 46947
MANDREL Logan Part No. AF4000-48 AF4001-48 AF40015-48 AF4002-48 AF40025-48 AF4003-48 AF4004-48
Bowen No. 29683 29689 46963 16938 29695 46945 46948
MIDDLE BODY Logan Part No. AF3000-48 AF3001-48 AF30015-48 AF3002-48 AF30025-48 AF3003-48 AF3004-48
Bowen No. 29684 29690 46964 16937 29696 46946 46949
60" STROKE
COMPLETE ASSEMBLY Logan Part No. 604-181 604-225 604-313 604-315 604-338 604-375 604-376
Bowen No. 29748 29754 46989 29760 29763 46971 46974
MANDREL Logan Part No. AF4000-60 AF4001-60 AF40015-60 AF4002-60 AF40025-60 AF4003-60 AF4004-60
Bowen No. 29749 29755 46990 29761 29764 46972 46975
MIDDLE BODY Logan Part No. AF3000-60 AF3001-60 AF30015-60 AF3002-60 AF30025-60 AF3003-60 AF3004-60
Bowen No. 29750 29756 46991 29762 29765 46973 46976
Logan Oil Tools reserves the right to change or discontinue designs without notice.
Special Notes:
(1) Standard stroke for Bumper Subs is 20". Only the Mandrel and Middle Body need to be ordered to convert a standard 20" stroke assembly to one
of greater stroke length. All other parts interchange for a given size. When a long stroke assembly is ordered by assembly number, the entire tool
is ordered. To convert, order only the Mandrel and Middle Body by part number.
When ordering, please specify:
(1) Name and number of assembly or part
(2) Connections, if other than standard
(3) Stroke length
(4) O.D., if other than standard
Recommended Spare Parts:
(1) 8 Non-Extrusion Rings
(2) 8 Seal Protector Rings
(3) 16 Knocker Seals
LEGAL NOTICE
All references to Bowen®part numbers in this literature are used to
identify interchangeable tools and parts. Reference to such tools and
parts does not imply that Logan Oil Tools is a licensee or is in any
way afliated with National Oilwell Varco. Logan Oil Tools does not
sell, or offer to sell, National Oilwell Varco (Bowen) products.
“Bowen” is a registered trademark of National Oilwell Varco.

Page 12 • Fishing Bumper Subs • Manual D450
12 • Logan Fishing Bumper Sub
FISHING BUMPER SUB
CONNECTION 2-7/8 2-7/8 2-7/8 3-1/2 3-1/2 4-1/2 4-1/2
API Reg API IF EUE API IF API IF API FH API IF
OUTSIDE DIAMETER (INCHES) 3-3/4 4-1/4 4-1/2 4-3/4 4-3/4 6 6-1/4
INSIDE DIAMETER (INCHES) 1-1/4 1-15/16 2-3/8 2 1-1/2 2 2-1/4
STROKE (INCHES) 20 20 20 20 20 20 20
COMPLETE ASSEMBLY Logan Part No. 604-377 604-425 604-450 604-475 604-476 604-600 604-625
Bowen No. 10090 41824 36794 39905 10225 10135 10257
TOP SUB Logan Part No. AF1005 AF1006 AF1007 AF1008 AF10085 AF1009 AF1010
Bowen No. 10091 41825 36795 39906 10226 10136 1025
MANDREL BODY Logan Part No. AF2005 AF2006 AF2007 AF2008 AF20085 AF2009 AF2010
Bowen No. 10093 10158 36797 39908 10228 10138 10267
MIDDLE BODY Logan Part No. AF3005-20 AF3006-20 AF3007-20 AF3008-20 AF30085-20 AF3009-20 AF3010-20
(20-inch stroke) Bowen No. 10092 10157 36796 39907 10227 10137 10262
MANDREL Logan Part No. AF4005-20 AF4006-20 AF4007-20 AF4008-20 AF40085-20 AF4009-20 AF4010-20
(20-inch stroke) Bowen No. 10095 41828 36798 39909 10229 10140 10268
KNOCKER Logan Part No. AF5005 AF5006 AF5007 AF5008 AF50085 AF5009 AF5010
Bowen No. 10096 41829 36799 39910 10230 10141 10250
NON-EXTRUSION RING Logan Part No. L385-37 L385-41 L216-44.5 L385-44 L385-44 L385-52 L385-54
Bowen No. 385-37 385-41 216-44.5 385-44 385-44 385-52 385-54
No. Req’d 4 4 4 4 4 4 4
SEAL PROTECTOR RING Logan Part No. L386-37 L386-41 L227-44.5 L386-44 L386-44 L386-52 L386-54
Bowen No. 386-37 386-41 227-44.5 386-44 386-44 386-52 386-54
No. Req’d 4 4 4 4 4 4 4
KNOCKER SEAL RING Logan Part No. 568-334 568-338 568-341 568-341 568-341 568-349 568-427
Bowen No. 568334 568338 568341 568341 568341 568349 568427
No. Req’d 2 2 2 2 2 2 2
KNOCKER LOCK SCREW Logan Part No. AF6002 AF6000 AF6000 AF6000 AF6002 AF6003 AF6003
Bowen No. 54769 48879 48879 48879 54769 43305 43305
Logan Oil Tools reserves the right to change or discontinue designs without notice.
Special Notes:
(1) Standard stroke for Bumper Subs is 20". Only the Mandrel and Middle Body need to be ordered to convert a standard 20" stroke assembly to one
of greater stroke length. All other parts interchange for a given size. When a long stroke assembly is ordered by assembly number, the entire tool
is ordered. To convert, order only the Mandrel and Middle Body by part number.
When ordering, please specify:
(1) Name and number of assembly or part
(2) Connections, if other than standard
(3) Stroke length
(4) O.D., if other than standard
Recommended Spare Parts:
(1) 8 Non-Extrusion Rings
(2) 8 Seal Protector Rings
(3) 16 Knocker Seals
LEGAL NOTICE
All references to Bowen®part numbers in this literature are used to
identify interchangeable tools and parts. Reference to such tools and
parts does not imply that Logan Oil Tools is a licensee or is in any
way afliated with National Oilwell Varco. Logan Oil Tools does not
sell, or offer to sell, National Oilwell Varco (Bowen) products.
“Bowen” is a registered trademark of National Oilwell Varco.

Manual D450 • Fishing Bumper Subs • Page 13
Logan Fishing Bumper Sub • 13
FISHING BUMPER SUB
CONNECTION 2-7/8 2-7/8 2-7/8 3-1/2 3-1/2 4-1/2 4-1/2
API Reg API IF EUE API IF API IF API FH API IF
OUTSIDE DIAMETER (INCHES) 3-3/4 4-1/4 4-1/2 4-3/4 4-3/4 6 6-1/4
INSIDE DIAMETER (INCHES) 1-1/4 1-15/16 2-3/8 2 1-1/2 2 2-1/4
STROKE (INCHES) 20 20 20 20 20 20 20
COMPLETE ASSEMBLY Logan Part No. 604-377 604-425 604-450 604-475 604-476 604-600 604-625
Bowen No. 10090 41824 36794 39905 10225 10135 10257
OPTIONAL ACCESSORIES
CHEVRON PACKING KNOCKER ASSEMBLY
COMPLETE ASSEMBLY Logan Part No. 25000-014 25000-015 25000-016 25000-017 25000-023 25000-018 25000-019
Bowen No. 30910 59191 62774 59177 81172 50321 62205
KNOCKER Logan Part No. AF7000 AF7001 AF7002 AF7003 AF70035 AF7004 AF7005
Bowen No. 30911 59192 62775 59178 81173 50322 62206
PACKING RING Logan Part No. AF8000 AF8001 AF8002 AF8003 AF80035 AF8004 AF8005
Bowen No. 30912 59193 62776 59179 81174 50323 62207
CENTER RING Logan Part No. AF9000 AF9001 AF9002 AF9003 AF90035 AF9004 AF9005
Bowen No. 30913 59194 62777 59180 81175 50324 62208
CHEVRON PACKING SET Logan Part No. AF10000 AF10001 AF10002 AF10003 AF100035 AF10004 AF10005
Bowen No. 30914 59195 62778 59181 81176 50325 62209
RETAINING RING Logan Part No. AF11000 AF11001 AF11002 AF11003 AF110035 AF11004 AF11005
Bowen No. 19812 59196 59182 59182 81177 50326 13177
PACKING RETAINER Logan Part No. AF12000 AF12001 AF12002 AF12003 … AF12004 AF12005
Bowen No. 62345 59197 62780 59183 … 50009 62210
No. Req’d 2 2 2 2 … 2 2
Logan Oil Tools reserves the right to change or discontinue designs without notice.
Special Notes:
(1) Standard stroke for Bumper Subs is 20". Only the Mandrel and Middle Body need to be ordered to convert a standard 20" stroke assembly to one
of greater stroke length. All other parts interchange for a given size. When a long stroke assembly is ordered by assembly number, the entire tool
is ordered. To convert, order only the Mandrel and Middle Body by part number.
When ordering, please specify:
(1) Name and number of assembly or part
(2) Connections, if other than standard
(3) Stroke length
(4) O.D., if other than standard
Recommended Spare Parts:
(1) 8 Non-Extrusion Rings
(2) 8 Seal Protector Rings
(3) 16 Knocker Seals
LEGAL NOTICE
All references to Bowen®part numbers in this literature are used to
identify interchangeable tools and parts. Reference to such tools and
parts does not imply that Logan Oil Tools is a licensee or is in any
way afliated with National Oilwell Varco. Logan Oil Tools does not
sell, or offer to sell, National Oilwell Varco (Bowen) products.
“Bowen” is a registered trademark of National Oilwell Varco.

Page 14 • Fishing Bumper Subs • Manual D450
14 • Logan Fishing Bumper Sub
42" STROKE
COMPLETE ASSEMBLY Logan Part No. 604-377 604-425 604-450 604-475 604-476 604-600 604-625
Bowen No. 29646 46923 46929 46932 29661 29667 29670
MANDREL Logan Part No. AF4005-42 AF4006-42 AF4007-42 AF4008-42 AF40085-42 AF4009-42 AF4010-42
Bowen No. 29647 46924 46930 46933 29662 29668 29671
MIDDLE BODY Logan Part No. AF3005-42 AF3006-42 AF3007-42 AF3008-42 AF30085-42 AF3009-42 AF3010-42
Bowen No. 29648 46925 46931 46934 29663 29669 29672
Logan Oil Tools reserves the right to change or discontinue designs without notice.
Special Notes:
(1) Standard stroke for Bumper Subs is 20". Only the Mandrel and Middle Body need to be ordered to convert a standard 20" stroke assembly to one
of greater stroke length. All other parts interchange for a given size. When a long stroke assembly is ordered by assembly number, the entire tool
is ordered. To convert, order only the Mandrel and Middle Body by part number.
When ordering, please specify:
(1) Name and number of assembly or part
(2) Connections, if other than standard
(3) Stroke length
(4) O.D., if other than standard
Recommended Spare Parts:
(1) 8 Non-Extrusion Rings
(2) 8 Seal Protector Rings
(3) 16 Knocker Seals
FISHING BUMPER SUB
CONNECTION 2-7/8 2-7/8 2-7/8 3-1/2 3-1/2 4-1/2 4-1/2
API Reg API IF EUE API IF API IF API FH API IF
OUTSIDE DIAMETER (INCHES) 3-3/4 4-1/4 4-1/2 4-3/4 4-3/4 6 6-1/4
INSIDE DIAMETER (INCHES) 1-1/4 1-15/16 2-3/8 2 1-1/2 2 2-1/4
30" STROKE
COMPLETE ASSEMBLY Logan Part No. 604-377 604-425 604-450 604-475 604-476 604-600 604-625
Bowen No. 29541 46869 46875 46878 29562 16150 20005
MANDREL Logan Part No. AF4005-30 AF4006-30 AF4007-30 AF4008-30 AF40085-30 AF4009-30 AF4010-30
Bowen No. 29542 46870 46876 46879 29563 16151 20007
MIDDLE BODY Logan Part No. AF3005-30 AF3006-30 AF3007-30 AF3008-30 AF30085-30 AF3009-30 AF3010-30
Bowen No. 29543 46871 46877 46880 29564 16152 20006
36" STROKE
COMPLETE ASSEMBLY Logan Part No. 604-377 604-425 604-450 604-475 604-476 604-600 604-625
Bowen No. 25180 46896 46902 46905 29604 10147 29610
MANDREL Logan Part No. AF4005-36 AF4006-36 AF4007-36 AF4008-36 AF40085-36 AF4009-36 AF4010-36
Bowen No. 25182 46897 46903 46906 29605 10149 29611
MIDDLE BODY Logan Part No. AF3005-36 AF3006-36 AF3007-36 AF3008-36 AF30085-36 AF3009-36 AF3010-36
Bowen No. 25181 46898 46904 46907 29606 10148 29612
LEGAL NOTICE
All references to Bowen®part numbers in this literature are used to
identify interchangeable tools and parts. Reference to such tools and
parts does not imply that Logan Oil Tools is a licensee or is in any
way afliated with National Oilwell Varco. Logan Oil Tools does not
sell, or offer to sell, National Oilwell Varco (Bowen) products.
“Bowen” is a registered trademark of National Oilwell Varco.

Manual D450 • Fishing Bumper Subs • Page 15
FISHING BUMPER SUB
CONNECTION 2-7/8 2-7/8 2-7/8 3-1/2 3-1/2 4-1/2 4-1/2
API Reg API IF EUE API IF API IF API FH API IF
OUTSIDE DIAMETER (INCHES) 3-3/4 4-1/4 4-1/2 4-3/4 4-3/4 6 6-1/4
INSIDE DIAMETER (INCHES) 1-1/4 1-15/16 2-3/8 2 1-1/2 2 2-1/4
48" STROKE
COMPLETE ASSEMBLY Logan Part No. 604-377 604-425 604-450 604-475 604-476 604-600 604-625
Bowen No. 29697 46956 46950 46959 29715 19880 29736
MANDREL Logan Part No. AF4005-48 AF4006-48 AF4007-48 AF4008-48 AF40085-48 AF4009-48 AF4010-48
Bowen No. 29698 46957 46951 46960 29716 19881 29737
MIDDLE BODY Logan Part No. AF3005-48 AF3006-48 AF3007-48 AF3008-48 AF30085-48 AF3009-48 AF3010-48
Bowen No. 29699 46958 46952 46961 29717 19882 29738
60" STROKE
COMPLETE ASSEMBLY Logan Part No. 604-377 604-425 604-450 604-475 604-476 604-600 604-625
Bowen No. 29766 46983 46977 46986 29781 29790 25385
MANDREL Logan Part No. AF4005-60 AF4006-60 AF4007-60 AF4008-60 AF40085-60 AF4009-60 AF4010-60
Bowen No. 29767 46984 46978 46987 29782 29791 25387
MIDDLE BODY Logan Part No. AF3005-60 AF3006-60 AF3007-60 AF3008-60 AF30085-60 AF3009-60 AF3010-60
Bowen No. 29768 46985 46979 46988 29786 29792 25386
Logan Oil Tools reserves the right to change or discontinue designs without notice.
Special Notes:
(1) Standard stroke for Bumper Subs is 20”. Only the Mandrel and Middle Body need to be ordered to convert a standard 20” stroke assembly to one
of greater stroke length. All other parts interchange for a given size. When a long stroke assembly is ordered by assembly number, the entire tool
is ordered. To convert, order only the Mandrel and Middle Body by part number.
When ordering, please specify:
(1) Name and number of assembly or part
(2) Connections, if other than standard
(3) Stroke length
(4) O.D., if other than standard
Recommended Spare Parts:
(1) 8 Non-Extrusion Rings
(2) 8 Seal Protector Rings
(3) 16 Knocker Seals
Logan Fishing Bumper Sub • 15
LEGAL NOTICE
All references to Bowen®part numbers in this literature are used to
identify interchangeable tools and parts. Reference to such tools and
parts does not imply that Logan Oil Tools is a licensee or is in any
way afliated with National Oilwell Varco. Logan Oil Tools does not
sell, or offer to sell, National Oilwell Varco (Bowen) products.
“Bowen” is a registered trademark of National Oilwell Varco.

Page 16 • Fishing Bumper Subs • Manual D450
FISHING BUMPER SUB
CONNECTION 5-1/2 6-5/8 7-5/8
API Reg API Reg API Reg
OUTSIDE DIAMETER (INCHES) 6-3/4 7-3/4 9
INSIDE DIAMETER (INCHES) 2-3/4 3-1/2 4
STROKE (INCHES) 20 20 20
COMPLETE ASSEMBLY Logan Part No. 604-675 604-775 604-900
Bowen No. 10690 26595 61596
TOP SUB Logan Part No. AF1011 AF1012 AF1013
Bowen No. 10691 26596 61597
MANDREL BODY Logan Part No. AF2011 AF2012 AF2013
Bowen No. 10693 26598 61599
MIDDLE BODY Logan Part No. AF3011-20 AF3012-20 AF3013-20
(20-inch stroke) Bowen No. 10692 26597 61598
MANDREL Logan Part No. AF4011-20 AF4012-20 AF4013-20
(20-inch stroke) Bowen No. 10694 26599 61600
KNOCKER Part No. AF5011 AF5012 AF5013
Bowen No. 10695 26594 61601
NON-EXTRUSION RING Logan Part No. L385-58 L385-65 L216-68.5
Bowen No. 385-58 385-65 216-68.5
No. Req’d 4 4 4
SEAL PROTECTOR RING Logan Part No. L386-58 L386-65 8-441
Bowen No. 386-58 386-65 227-68.5
No. Req’d 4 4 4
KNOCKER SEAL RING Logan Part No. 568-431 568-438 568-441
Bowen No. 568431 568438 568441
No. Req’d 2 2 2
KNOCKER LOCK SCREW Logan Part No. AF6003 AF6003 AF6004
Bowen No. 43305 43305 54770
Logan Oil Tools reserves the right to change or discontinue designs without notice.
Special Notes:
(1) Standard stroke for Bumper Subs is 20". Only the Mandrel and Middle Body need to be ordered to convert a standard 20" stroke assembly to one
of greater stroke length. All other parts interchange for a given size. When a long stroke assembly is ordered by assembly number, the entire tool
is ordered. To convert, order only the Mandrel and Middle Body by part number.
When ordering, please specify:
(1) Name and number of assembly or part
(2) Connections, if other than standard
(3) Stroke length
(4) O.D., if other than standard
Recommended Spare Parts:
(1) 8 Non-Extrusion Rings
(2) 8 Seal Protector Rings
(3) 16 Knocker Seals
16 • Logan Fishing Bumper Sub
LEGAL NOTICE
All references to Bowen®part numbers in this literature are used to
identify interchangeable tools and parts. Reference to such tools and
parts does not imply that Logan Oil Tools is a licensee or is in any
way afliated with National Oilwell Varco. Logan Oil Tools does not
sell, or offer to sell, National Oilwell Varco (Bowen) products.
“Bowen” is a registered trademark of National Oilwell Varco.

Manual D450 • Fishing Bumper Subs • Page 17
Logan Fishing Bumper Sub • 17
OPTIONAL ACCESSORIES
CHEVRON PACKING KNOCKER ASSEMBLY
COMPLETE ASSEMBLY Logan Part No. 25000-020 25000-021 …
Bowen No. 57013 61103 …
KNOCKER Logan Part No. AF7006 AF7007 …
Bowen No. 57014 61104 …
PACKING RING Logan Part No. AF8006 AF8007 …
Bowen No. 57015 61105 …
CENTER RING Logan Part No. AF9006 AF9007 …
Bowen No. 62374 62378 …
CHEVRON PACKING SET Logan Part No. AF10006 AF10007 …
Bowen No. 57016 61106 …
RETAINING RING Logan Part No. AF11006 AF11007 …
Bowen No. 57017 59907 …
PACKING RETAINER Logan Part No. AF12006 AF12007 …
Bowen No. 62375 62379 …
No. Req’d 2 2 …
Logan Oil Tools reserves the right to change or discontinue designs without notice.
Special Notes:
(1) Standard stroke for Bumper Subs is 20”. Only the Mandrel and Middle Body need to be ordered to convert a standard 20” stroke assembly to one
of greater stroke length. All other parts interchange for a given size. When a long stroke assembly is ordered by assembly number, the entire tool
is ordered. To convert, order only the Mandrel and Middle Body by part number.
When ordering, please specify:
(1) Name and number of assembly or part
(2) Connections, if other than standard
(3) Stroke length
(4) O.D., if other than standard
Recommended Spare Parts:
(1) 8 Non-Extrusion Rings
(2) 8 Seal Protector Rings
(3) 16 Knocker Seals
FISHING BUMPER SUB
CONNECTION 5-1/2 6-5/8 7-5/8
API Reg API Reg API Reg
OUTSIDE DIAMETER (INCHES) 6-3/4 7-3/4 9
INSIDE DIAMETER (INCHES) 2-3/4 3-1/2 4
STROKE (INCHES) 20 20 20
COMPLETE ASSEMBLY Logan Part No. 604-675 604-775 604-900
Bowen No. 10690 26595 61596
LEGAL NOTICE
All references to Bowen®part numbers in this literature are used to
identify interchangeable tools and parts. Reference to such tools and
parts does not imply that Logan Oil Tools is a licensee or is in any
way afliated with National Oilwell Varco. Logan Oil Tools does not
sell, or offer to sell, National Oilwell Varco (Bowen) products.
“Bowen” is a registered trademark of National Oilwell Varco.

Page 18 • Fishing Bumper Subs • Manual D450
FISHING BUMPER SUB
CONNECTION 5-1/2 6-5/8 7-5/8
API Reg API Reg API Reg
OUTSIDE DIAMETER (INCHES) 6-3/4 7-3/4 9
INSIDE DIAMETER (INCHES) 2-3/4 3-1/2 4
30" STROKE
COMPLETE ASSEMBLY Logan Part No. 604-675 604-775 604-900
Bowen No. 14520 29568 70408
MANDREL Logan Part No. AF4011-30 AF4012-30 AF4013-30
Bowen No. 14522 29569 70410
MIDDLE BODY Logan Part No. AF3011-30 AF3012-30 AF3013-30
Bowen No. 14521 29570 70409
36" STROKE
COMPLETE ASSEMBLY Logan Part No. 604-675 604-775 604-900
Bowen No. 13590 29616 70411
MANDREL Logan Part No. AF4011-36 AF4012-36 AF4013-36
Bowen No. 13592 29617 70413
MIDDLE BODY Logan Part No. AF3011-36 AF3012-36 AF3013-36
Bowen No. 13591 29618 70412
42" STROKE
COMPLETE ASSEMBLY Logan Part No. 604-675 604-775 604-900
Bowen No. 29676 29679 70414
MANDREL Logan Part No. AF4011-42 AF4012-42 AF4013-42
Bowen No. 29677 29680 70416
MIDDLE BODY Logan Part No. AF3011-42 AF3012-42 AF3013-42
Bowen No. 29678 29681 70415
Logan Oil Tools reserves the right to change or discontinue designs without notice.
Special Notes:
(1) Standard stroke for Bumper Subs is 20". Only the Mandrel and Middle Body need to be ordered to convert a standard 20" stroke assembly to one
of greater stroke length. All other parts interchange for a given size. When a long stroke assembly is ordered by assembly number, the entire tool
is ordered. To convert, order only the Mandrel and Middle Body by part number.
When ordering, please specify:
(1) Name and number of assembly or part
(2) Connections, if other than standard
(3) Stroke length
(4) O.D., if other than standard
Recommended Spare Parts:
(1) 8 Non-Extrusion Rings
(2) 8 Seal Protector Rings
(3) 16 Knocker Seals
18 • Logan Fishing Bumper Sub
LEGAL NOTICE
All references to Bowen®part numbers in this literature are used to
identify interchangeable tools and parts. Reference to such tools and
parts does not imply that Logan Oil Tools is a licensee or is in any
way afliated with National Oilwell Varco. Logan Oil Tools does not
sell, or offer to sell, National Oilwell Varco (Bowen) products.
“Bowen” is a registered trademark of National Oilwell Varco.

Manual D450 • Fishing Bumper Subs • Page 19
Logan Fishing Bumper Sub • 19
FISHING BUMPER SUB
CONNECTION 5-1/2 6-5/8 7-5/8
API Reg API Reg API Reg
OUTSIDE DIAMETER (INCHES) 6-3/4 7-3/4 9
INSIDE DIAMETER (INCHES) 2-3/4 3-1/2 4
48" STROKE
COMPLETE ASSEMBLY Logan Part No. 604-675 604-775 604-900
Bowen No. 29742 29745 70417
MANDREL Logan Part No. AF4011-48 AF4012-48 AF4013-48
Bowen No. 29743 29746 70419
MIDDLE BODY Logan Part No. AF3011-48 AF3012-48 AF3013-48
Bowen No. 29744 29747 70418
60" STROKE
COMPLETE ASSEMBLY Logan Part No. 604-675 604-775 604-900
Bowen No. 29796 29799 70420
MANDREL Logan Part No. AF4011-60 AF4012-60 AF4013-60
Bowen No. 29797 29800 70422
MIDDLE BODY Logan Part No. AF3011-60 AF3012-60 AF3013-60
Bowen No. 29798 29801 70421
Logan Oil Tools reserves the right to change or discontinue designs without notice.
Special Notes:
(1) Standard stroke for Bumper Subs is 20”. Only the Mandrel and Middle Body need to be ordered to convert a standard 20” stroke assembly to one
of greater stroke length. All other parts interchange for a given size. When a long stroke assembly is ordered by assembly number, the entire tool
is ordered. To convert, order only the Mandrel and Middle Body by part number.
When ordering, please specify:
(1) Name and number of assembly or part
(2) Connections, if other than standard
(3) Stroke length
(4) O.D., if other than standard
Recommended Spare Parts:
(1) 8 Non-Extrusion Rings
(2) 8 Seal Protector Rings
(3) 16 Knocker Seals
LEGAL NOTICE
All references to Bowen®part numbers in this literature are used to
identify interchangeable tools and parts. Reference to such tools and
parts does not imply that Logan Oil Tools is a licensee or is in any
way afliated with National Oilwell Varco. Logan Oil Tools does not
sell, or offer to sell, National Oilwell Varco (Bowen) products.
“Bowen” is a registered trademark of National Oilwell Varco.