Jet BP-1272 Service manual

Operating Instructions and Parts Manual
72-inch Box and Pan Brakes
Models BP-1272 and BP-1672
JET
427 New Sanford Road
LaVergne, Tennessee 37086 Part No. M-754125
Ph.: 800-274-6848 Edition 2 01/2018
www.jettools.com Copyright © 2018 JET
This .pdf document is bookmarked

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1.0 IMPORTANT SAFETY
INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USINGTHIS
MACHINE.
WARNING – To reduce the risk of
injury:
1. Read and understand the entire owner's
manual before attempting assembly or
operation.
2. Read and understand the warnings posted on
the machine and in this manual. Failure to
comply with all of these warnings may cause
serious injury.
3. Replace the warning labels if they become
obscured or removed.
4. This box and pan brake is designed and
intended for use by properly trained and
experienced personnel only. If you are not
familiar with the proper and safe operation of a
brake, do not use until proper training and
knowledge have been obtained.
5. Do not use this brake for other than its intended
use. If used for other purposes, JET disclaims
any real or implied warranty and holds itself
harmless from any injury that may result from
that use.
6. Always wear ANSI Z87.1 approved safety
glasses or face shield while using this brake.
(Everyday eyeglasses only have impact
resistant lenses; they are not safety glasses.)
7. Before operating this machine, remove tie,
rings, watches and other jewelry, and roll
sleeves up past the elbows. Do not wear loose
clothing. Confine long hair. Non-slip footwear or
anti-skid floor strips are recommended.
8. Wear ear protectors (plugs or muffs) if noise
reaches unsafe levels.
9. CALIFORNIA PROPOSITION 65 WARNING:
This product contains chemicals known to the
State of California to cause cancer, or birth
defects or other reproductive harm.
10. This product, when used for welding, cutting, or
working with metal, produces fumes, gases, or
dusts which contain chemicals known to the
State of California to cause birth defects and, in
some cases, cancer. (California Health and
Safety Code Section 25249.5 et seq.)
11. Do not operate this machinewhile tired or under
the influence of drugs, alcohol or any
medication.
12. Remove adjusting keys and wrenches. Form a
habit of checking to see that keys and adjusting
wrenches are removed from the machine
before turning it on.
13. Keep safety guards in place at all times when
the machine is in use. If removed for
maintenance purposes, use extreme caution
and replace the guards immediately after
completion of maintenance.
14. Check damaged parts. Before further use of the
machine, a guard or other part that is damaged
should be carefully checked to determine that it
will operate properly and perform its intended
function. Check for alignment of moving parts,
binding of moving parts, breakage of parts,
mounting and any other conditions that may
affect its operation. A guard or other part that is
damaged should be properly repaired or
replaced.
15. Provide for adequate space surrounding work
area and non-glare, overhead lighting.
16. Keep the floor around the machine clean and
free of scrap material, oil and grease.
17. Keep visitors a safe distance from the work
area. Keep children away.
18. Make your workshop child proof with padlocks,
master switches or by removing starter keys.
19. Give your work undivided attention. Looking
around, carrying on a conversation and “horse-
play” are careless acts that can result in serious
injury.
20. Maintain a balanced stance at all times so that
you do not fall into the blade or other moving
parts. Do not overreach or use excessive force
to perform any machine operation.
21. Use recommended accessories; improper
accessories may be hazardous.
22. Maintain tools with care. Keep blades sharp and
clean for the best and safest performance.
Follow instructions for lubricating and changing
accessories.
23. Do not stand on the machine. Serious injury
could occur if the machine tips over.
24. Remove loose items and unnecessary work
pieces from the area before operating the
machine.
25. Do not use in dangerous environment. Do not
use machine in damp or wet location, or expose
to rain. Keep work area well lighted.

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26. Sheet metal stock has sharp edges; use caution
when handling to prevent cuts.
27. Keep hands clear of bending area while
operating.
28. Do not exceed rated capacity of brake.
29. The brake should be secured to floor with
appropriate fasteners.
Familiarize yourself with the following safety notices used in this manual:
This means that if precautions are not heeded, it may result in minor injury and/or possible
machine damage.
This means that if precautions are not heeded, it may result in serious, or possibly even fatal,
injury.
SAVE THESE INSTRUCTIONS
2.0 About this manual
This manual is provided by JET, covering the safe operation and maintenance procedures for a JET Model BP-
1272 and BP-1672 Box and Pan Brake. This manual contains instructions on installation, safety precautions,
general operating procedures, maintenance instructions and parts breakdown. Your machine has been designed
and constructed to provide consistent, long-term operation if used in accordance with the instructions as set forth
in this document.
If there are questions or comments, please contact your local supplier or JET. JET can also be reached at our
web site: www.jettools.com.
Retain this manual for future reference. If the machine transfers ownership, the manual should accompany it.
Read and understand the entire contents of this manual before attempting assembly or
operation! Failure to comply may cause serious injury!
Register your product online -
http://www.jettools.com/us/en/service-and-support/warranty/registration/

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3.0 Table of contents
Section Page
1.0 IMPORTANT SAFETY INSTRUCTIONS.......................................................................................................2
2.0 About this manual ..........................................................................................................................................3
3.0 Table of contents............................................................................................................................................4
4.0 Specifications.................................................................................................................................................4
5.0 Setup and assembly.......................................................................................................................................5
5.1 Shipping contents.......................................................................................................................................5
5.2 Tools required for assembly.......................................................................................................................5
5.3 Unpacking and cleanup..............................................................................................................................5
5.4 Assembly....................................................................................................................................................5
6.0 Adjustments ...................................................................................................................................................6
6.1 Counterweight position...............................................................................................................................6
6.2 Apron adjustment.......................................................................................................................................6
6.3 Adjusting for metal thickness......................................................................................................................7
6.4 Adjusting clamping pressure......................................................................................................................7
6.5 Repeat bends.............................................................................................................................................7
7.0 User-maintenance..........................................................................................................................................7
7.1 Lubrication..................................................................................................................................................7
8.0 Replacement Parts.........................................................................................................................................7
8.1.1 BP-1272/1672 Box and Pan Brakes – Exploded View............................................................................8
8.1.2 BP-1272/1672 Box and Pan Brakes – Parts List.....................................................................................9
9.0 Warranty and service...................................................................................................................................11
4.0 Specifications
Model number.......................................................................BP-1272.....................................................BP-1672
Stock number..........................................................................754125.......................................................754130
Capacity (mild steel)............................................. 12 gauge (2.5 mm).....................................16 gauge (1.5 mm)
Bending length capacity...........................................72 in. (1830 mm)........................................72 in. (1830 mm)
Bending angle....................................................................0-135 deg...................................................0-135 deg.
Maximum box depth.....................................................4 in. (100 mm)............................................4 in. (100 mm)
Maximum lift of beam.............................................2.2 in. (55.88 mm)......................................2.2 in. (55.88 mm)
Beam adjustment, front to rear....................................7/8 in. (22 mm)...........................................1 in. (25.4 mm)
Recommended min. flange in capacity material .........1 in. (25.4 mm)...........................................1 in. (25.4 mm)
Number of fingers............................................................................17...............................................................17
Width of fingers ............................6@3 in., 3@4 in., 6@5 in., 2@6 in............ 6@3 in., 3@4 in., 6@5 in., 2@6 in
Finger nose angle ..................................................................45 deg. ......................................................45 deg.
Finger nose radius .................................................1/32 in. (0.79 mm)......................................1/32 in. (0.79 mm)
Overall dimensions:
Assembled (LxWxH) .............100x30x41 in. (254x76.2x104.2 cm).........100x31x41 in. (2540x788x1042 mm)
Shipping (LxWxH)............92-1/2x30x39-1/2 in. (235x76x100 cm)..... 92-1/2x30x39-1/2 in. (235x76x100 cm)
Weights:
Net.......................................................................2182 lb. (990 kg)........................................1960 lb. (889 kg)
Shipping............................................................2535 lb. (1150 kg)......................................2290 lb. (1039 kg)
The specifications in this manual were current at time of publication, but because of our policy of continuous
improvement, JET reserves the right to change specifications at any time and without prior notice, without incurring
obligations.

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5.0 Setup and assembly
Read and understand all
assembly instructions before attempting
assembly. Failure to comply may cause serious
injury.
5.1 Shipping contents
Refer to Figures 1 and 2.
1 Box and pan brake (not shown)
2 Leg stands – A
1 Handle – B
1 Stop rod – C
2 Counterweight assemblies – D
1 Stop rod pin – E
1 Stop collar with handle – F
8 Hex cap bolts, M12x45 – HP1
1 Flat washer, M16 – HP3
8 Flat washers, M12 – HP4
8 Lock washers, M12 – HP5
5 Hex nuts, M12 – HP6
1 Hex nut, M16 – HP7
1 Cotter pin – HP8
1 Instructions and parts manual (not shown)
1 Warranty card (not shown)
Figure 1
Figure 2
5.2 Tools required for assembly
Hex wrench 6mm
Wrench 18mm
Pliers
5.3 Unpacking and cleanup
1. Remove all contents from shipping crate and
compare to the contents list in this manual. If
shipping damage or any part shortages are
identified, contact your distributor. (Check brake
first in case parts were shipped pre-
assembled.) Do not discard packing material
until brake is assembled and operating
satisfactorily.
2. Carefully clean all rust protected surfaces with
a mild solvent or kerosene and a soft rag. Do
not use lacquer thinner, paint thinner, or
gasoline – these will damage painted surfaces.
3. Coat all machined surfaces with a light coat of
oil to inhibit rust.
5.4 Assembly
Refer to exploded view if additional clarification is
needed for assembly.
1. Remove bolts holding leg stands and brake to
pallet.
2. Locate brake in a dry, well-lighted area with a
sturdy, level floor. Machine location must allow
room for loading and offloading stock, and
access on all sides for maintenance.
3. Use hoist or forklift to carefully lift brake onto leg
stands. Secure with M12 bolts, washers and
nuts (HP1/HP4/HP5/HP6).
Do not allow anyone
beneath the brake while moving it into
position and until it is secured on leg
stands.
4. Verify that brake is level; use shims if
necessary. Secure leg stands to floor with
appropriate fasteners, such as lag bolts (not
provided).
5. The clamp handles are shipped in lowered
position due to size constraints (thus, the
fingers will contact platform before handles
reach proper forward position). The handles
must be repositioned before operating, as
follows:
6. Remove screw, spring cover and spring (J,
Figure 3). Slide handle outward just enough to
clear stop pin, and rotate handle to a higher
position, as shown. Reinstall spring, spring
cover and screw, and tighten screw until there
is no “play” in the handle.

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Figure 3
7. Install counterweight assemblies to left and
right hinges and tighten set screws. See Figure
3.
8. Install handle (B) to front of apron (HP1,
HP4,HP5).
9. Install stop rod assembly on left side of brake,
through weldment on apron, as shown in Figure
4. Secure stop rod pin (F) with flat washer and
hex nut (HP7,HP3). Install cotter pin (HP8) at
end of stop rod, and bend with pliers to secure.
Figure 4
6.0 Adjustments
6.1 Counterweight position
Proper counterweight position determines amount
of leverage for the bend, and most efficient
movement of apron for the operator.
To adjust, back off top nut (K, Figure 5) and rotate
counterweight (lower nut will turn with it) to desired
position. Bring top nut back into contact with
counterweight.
When lifting the apron for a bend, grasp handle (L)
to push counterweights.
Do not grasp the threads as
they may cause cuts to hand.
Figure 5
6.2 Apron adjustment
The apron assembly has been adjusted by the
manufacturer for use with material having the
capacity listed in the Specifications section. If any
misalignment occurs, correct as follows.
The forward edge of hold-down fingers should be
adjusted parallel to pivot edge of press bar. Release
clamping pressure on hold-down assembly by
pushing clamp handles slightly to the rear. Turn
knobs (M, Figure 6) to adjust hold-down assembly
for parallel.
The truss nuts (N, Figure 6) can be used to help
achieve alignment in apron and hold-down
assemblies, by eliminating any bowing at the center
of these assembles.
Finger alignment can be achieved by loosening the
socket head screws on the fingers and raising apron
to 90-degree position. Push fingers forward against
apron bar for proper alignment. Retighten all
screws.
Figure 6

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6.3 Adjusting for metal thickness
The hold-down assembly must be adjusted to allow
for clearance when making bends according to
material thickness. Clearance for material within
four gauges of the capacity should be twice the
thickness of the material. For lighter gauges use 1-
1/2 times the thickness.
Turn both knobs (M, Figure 6) the same amount to
maintain parallelism of fingers with apron.
6.4 Adjusting clamping pressure
Clamping pressure should be adjusted according to
material thickness. Clamping pressure should be
great enough to hold material securely in place but
not so much that it is difficult to lock the clamping
handles. Clamping pressure can be adjusted by
turning the nuts on the threaded rod portion of yoke
assembly (P, Figure 7).
When clamping handles are properly set, you will be
able to feel them drop into locking position.
6.5 Repeat bends
Adjust stop collar on stop rod (Figure 4) to limit
apron swing.
7.0 User-maintenance
7.1 Lubrication
The machine must be lubricated every day of
service with a few drops of oil at the pivot points. Oil
fittings are located at both yoke assemblies (A,
Figure 7) and the apron assembly near the hinge pin
(B).
Lightly oil all machined (unpainted) parts when not
in use, to inhibit rust.
Figure 7
8.0 Replacement Parts
Replacement parts are listed on the following pages. To order parts or reach our service department, call 1-800-
274-6848 Monday through Friday, 8:00 a.m. to 5:00 p.m. CST. Having the Model Number and Serial Number of
your machine available when you call will allow us to serve you quickly and accurately.
Non-proprietary parts, such as fasteners, can be found at local hardware stores, or may be ordered from JET.
Some parts are shown for reference only, and may not be available individually.

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8.1.1 BP-1272/1672 Box and Pan Brakes – Exploded View

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8.1.2 BP-1272/1672 Box and Pan Brakes – Parts List
Index No Part No Description Size Qty
1 ................F008836.................... Hex Cap Screw........................................................M10x25.........................2
2 ................BPF16100-02............ Spring Cover............................................................ ......................................2
3 ................BPF16100-03............ Spring...................................................................... ......................................2
4................BPF16100-04............ Clamp Handle (LH).................................................. ......................................1
5 ................BPF1248-05.............. Zerk Fitting............................................................... ......................................4
..................BP1272-06A.............. Yoke Assembly (includes #5,6,28) .......................... ......................................2
6 ................ .................................. Yoke......................................................................... ......................................2
7 ................BP1272-07................ Hold Down Assembly............................................... ......................................1
..................BP1672-07................ Hold Down Assembly............................................... ......................................1
8 ................BPF16100-08............ Shaft ........................................................................ ......................................2
9................BPF16100-09............ Clamp Handle (RH) ................................................. ......................................1
10..............F005432.................... Socket Head Cap Screw .........................................M10x45.........................7
11 ..............BP1272-11................ Long Press A........................................................... ......................................1
12-1...........BP1272-12-1............. Joint Open ...............................................................3”...................................6
..................BP1672-12-1............. Joint Open ...............................................................3”...................................6
12-2...........BP1272-12-2............. Joint Open ...............................................................4”...................................3
..................BP1672-12-2............. Joint Open ...............................................................4”...................................3
12-3...........BP1272-12-3............. Joint Open ...............................................................5”...................................6
..................BP1672-12-3............. Joint Open ...............................................................5”...................................6
12-4...........BP1272-12-4............. Joint Open ...............................................................6”...................................2
..................BP1672-12-4............. Joint Open ...............................................................6”...................................2
13-1...........BP1272-13-1............. Holder, Finger..........................................................3”...................................6
..................BP1672-13-1............. Holder, Finger..........................................................3”...................................6
13-2...........BP1272-13-2............. Holder, Finger..........................................................4”...................................3
..................BP1672-13-2............. Holder, Finger..........................................................4”...................................3
13-3...........BP1272-13-3............. Holder, Finger..........................................................5”...................................6
..................BP1672-13-3............. Holder, Finger..........................................................5”...................................6
13-4...........BP1272-13-4............. Holder, Finger..........................................................6”...................................2
..................BP1672-13-4............. Holder, Finger..........................................................6”...................................2
14-1...........BP1272-14-1............. Washer, Finger........................................................3”...................................6
..................BP1672-14-1............. Washer, Finger........................................................3”...................................6
14-2...........BP1272-14-2............. Washer, Finger........................................................4”...................................3
..................BP1672-14-2............. Washer, Finger........................................................4”...................................3
14-3...........BP1272-14-3............. Washer, Finger........................................................5”...................................6
..................BP1672-14-3............. Washer, Finger........................................................5”...................................6
14-4...........BP1272-14-4............. Washer, Finger........................................................6”...................................2
..................BP1672-14-4............. Washer, Finger........................................................6”...................................2
15-1...........BP1272-15-1............. Finger.......................................................................3”...................................6
..................BP1672-15-1............. Finger.......................................................................3”...................................6
15-2...........BP1272-15-2............. Finger.......................................................................4”...................................3
..................BP1672-15-2............. Finger.......................................................................4”...................................3
15-3...........BP1272-15-3............. Finger.......................................................................5”...................................6
..................BP1672-15-3............. Finger.......................................................................5”...................................6
15-4...........BP1272-15-4............. Finger.......................................................................6”...................................2
..................BP1672-15-4............. Finger.......................................................................6”...................................2
16..............F005437.................... Socket Head Cap Screw .........................................M10x70.......................34
17 ..............F002116.................... Lock Washer............................................................10 mm.........................43
18..............F005428.................... Socket Head Cap Screw .........................................M10x25.......................17
19 ..............F002643.................... Flat Washer ............................................................. 10 mm.........................45
20 ..............BP1272-20................ Sleeve...................................................................... ......................................2
21 ..............F002118.................... Lock Washer............................................................12 mm...........................8
22 ..............F002646.................... Flat Washer ............................................................. 12 mm...........................8
23 ..............BPF16100-68............ Scale (LH)................................................................ ......................................1
24 ..............BP1272-24................ Nut........................................................................... ......................................4
25..............BP1272-25................ Counter Weight Assembly....................................... ......................................2
26 ..............BP1272-26................ Rod.......................................................................... ......................................2
27 ..............BP1272-27................ Rubber grip.............................................................. ......................................2
28 ..............BP1272-28................ Stop Pin................................................................... ......................................2
29 ..............F003091.................... Hex Nut....................................................................M20...............................4
30 ..............F003084.................... Hex Nut....................................................................M12...............................4

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Index No Part No Description Size Qty
31 ..............BPF16100-31............ Swivel Pin Assembly................................................ ......................................2
32 ..............BPF1248-32.............. Adjusting Nut ........................................................... ......................................2
33 ..............BPF1248-33.............. Stop Nut .................................................................. ......................................2
34 ..............BP1272-34................ Long Press B........................................................... ......................................1
35 ..............BPF1248-35.............. Knob ........................................................................ ......................................2
36 ..............BP1272-36................ Base Assembly........................................................ ......................................1
..................BP1672-36................ Base Assembly........................................................ ......................................1
37 ..............BPF1248-37.............. Stop Rod.................................................................. ......................................1
38..............BPF1248-38.............. Stop Rod Pin ........................................................... ......................................1
39 ..............BPF1248-39.............. Stop Collar............................................................... ......................................1
40 ..............BPF1248-70.............. Stand ....................................................................... ......................................2
41..............F005432.................... Socket Head Cap Screw .........................................M10x45.........................7
42 ..............F003084.................... Hex Nut....................................................................M12...............................1
43 ..............F009542.................... Hex Cap Screw........................................................M12x40.........................6
44 ..............F003910.................... Cotter Pin.................................................................3x40 mm.......................1
45..............BPF1248-45.............. Round Pin................................................................4x40 mm.......................2
46..............BPF1248-46.............. Round Pin................................................................6x30 mm.......................2
47 ..............BPF16100-47............ Lead Screw.............................................................. ......................................2
48 ..............F003088.................... Hex Nut....................................................................M16...............................3
49 ..............F009542.................... Flat Washer ............................................................16 mm...........................3
50 ..............BP1272-50................ Handle .................................................................... ......................................1
..................BP1272-51A.............. Hinge Assembly (RH) (includes #51,64,65)............. ......................................1
51 ..............BPF16100-51............ Hinge (RH)............................................................... ......................................1
52 ..............BPF16100-52............ Hinge Pin................................................................. ......................................2
..................BP1272-53A.............. Hinge Assembly (LH) (includes #53,64,65)............. ......................................1
53 ..............BPF16100-53............ Hinge (LH) ............................................................... ......................................1
54 ..............BPF1248-54.............. Special Washer........................................................ ......................................6
55..............F005429.................... Socket Head Cap Screw .........................................M10x30.........................2
56 ..............BPF16100-56............ Scale (RH)............................................................... ......................................1
57 ..............BP1272-57................ Apron Assembly....................................................... ......................................1
..................BP1672-57................ Apron Assembly....................................................... ......................................1
58 ..............BP1272-58................ Insert Bar................................................................. ......................................1
59..............F005430.................... Socket Head Cap Screw .........................................M10x35.........................9
60..............F010423.................... Socket Set Screw ....................................................M12x12.........................4
61 ..............F009545.................... Hex Cap Screw........................................................M12x45.........................8
62 ..............BPF16100-62............ Round Pin................................................................d8x25 mm.....................4
63..............BP1272-63................ Bend Handle............................................................ ......................................1
64..............BPF1248-75.............. Scale Pointer (not shown) ....................................... ......................................1
65..............TS-1525031 .............. Socket Set Screw ....................................................M10x16.........................4
66..............F005383.................... Socket Head Cap Screw .........................................M6x20...........................2
..................LM000216................. ID/Warning Label, BP-1272 (not shown)................. ......................................1
..................LM000217................. ID/Warning Label, BP1672 (not shown).................. ......................................1
..................JET-203..................... JET Logo (not shown) .............................................203 x 84mm..................1