Parker LTR Series Datasheet

2
1800_maint.pmd, M&A
Catalog HY03-1800/US Maintenance Instructions and Service
LTR Series Actuators
Maintenance Instructions & Parts List
Provide Model Number and Serial Number When Ordering Spare Parts.
The LTR Series Actuators will provide superior performance in heavy duty pneumatic and medium duty
hydraulic applications. The LTR Series "Wear-Pak" piston sealing configurations and anti-friction ball bear-
ings are used to guarantee low breakaway pressure and eliminate erratic motion at low speeds.
In the event that maintenance is required, the following steps should be used as a guide. It is recom-
mended that a suitable oil or O-ring lubrication compatible with the operating media, such as Parker Lube-
A-Cyl, be used on all seals and mating parts to facilitate assembly.
A. Inspection & Replacement of Piston Seal, #10, Wear Rings, #15, and O-Ring End Cap, #12.
1. Remove Tie Rod Nuts, #17 from Tie Rods,#8.
2. Pull End Cap, #16 free from Cylinder Tube, #14.
3. Pull Cylinder Tube, #14 free from Housing, #13.
4. Push Piston, #11 free from Cylinder Tube, #14.
5. Inspect and/or replace Piston Seal, #10, Wear Rings, #15, and O-Ring End Cap, #12.
6. Inspect and/or replace O-Ring Cylinder, #7 (for LTR Models only).
7. Reassemble as shown in figure and torque Tie Rod Nuts, #17 per Torque Table.
B. Inspection & Replacement of Bearing, #2.
1. Remove Retaining Ring, #1.
2. Press Pinion, #3, and Bearing #2 from housing, #13.
3. Press Bearing, #2 free from Pinion, #3.
4. Inspect or replace Bearing, #2.
5. Press new Bearing, #2 into Housing, #13.
6. Replace Pinion, #3 into Housing, #13.
7. Press remaining new Bearing, #2 onto Pinion, #3.
8. Replace Retaining Ring, #1.
NOTE:
Prior to assembly of an LTR Series actuator, the rack and pinion are coated with a molycoat GN paste
and a moly grease containing a minimum MSO2content of 3%, such as Texaco Molytex EP2.
LTR SeriesMaintenance Instructions
Parker Hannifin Corporation
Pneumatic Division
Wadsworth, Ohio USA
www.comoso.com 800.696.6165

3
Catalog HY03-1800/US Maintenance Instructions and Service
1800_maint.pmd, M&A
Installation &
Maintenance
LTR SeriesParts Identification
PTR/LTR TIE ROD NUT #17 BUMPER PISTON BOLT #36 SHAFT SEAL FLANGE BOLT
MODEL CYLINDER TUBE MATERIAL BOLT #19 CUSHION PLUG SCREW #50 #46
ALUMINUM STEEL #25
101/102 1.5 — 3 3 3 5
151/152 3 5 6 6 3 10
201/202 6 11 20 20 3 17
251/252 6 11 20 20 3 40
321/322 15 20 50 50 3 130
Bumper Option
Built in polyurethane bumper pads absorb shock and
noise, thus permitting faster cycle times and increased
production rates. Recommended torque value for
Bumper Bolt, item #19, is shown in Torque Table.
All items marked with an asterick (*) are included in a complete
seal kit.
¹ = Only used on units with steel cylinder tubes. (LTR units)
x = Quantity as required per end cap option specified.
18
19
ITEM DESCRIPTION QUANTITY
NO. SINGLE DOUBLE
RACK RACK
1 RETAINING RING 2 2
2 BEARING 2 2
3 PINION 1 1
4 NAME PLATE 1 1
6 PLUG 1 1
7* O-RING, CYLINDER TUBE124
8 TIE ROD 8 16
9RACK 1 2
10* PISTON SEAL 2 4
11 PISTON 2 4
12* O-RING, END CAP 2 4
13 HOUSING 1 1
14 CYLINDER TUBE 2 4
15* WEAR RING 4 8
16 END CAP 2 4
17 TIE ROD NUT 8 16
18 BUMPER 1x 1x
19 BUMPER BOLT 1x 1x
1
2
3
4
6
2
1
13 14
15
8
9
16
10
17
11 12
7
Parker Hannifin Corporation
Pneumatic Division
Wadsworth, Ohio USA
www.comoso.com 800.696.6165

4
1800_maint.pmd, M&A
Catalog HY03-1800/US Maintenance Instructions and Service
Built in meter-out flow controls provide for precise
regulation of actuator speed and eliminate the cost and
space of externally mounted components. A separate
spring loaded ball check is used to provide free flow in
the opposite direction.
When both cushions and port flow controls are specified
they will be stamped "C" and "P" respectively.
To Adjust:
Using an Allen wrench, turn Adjustment Screw, #29,
clockwise for slower speed; counterclockwise for more
speed.
Schematic
Port Flow Control Option
NOTE: Quantities shown are as required per end cap option
specified.
¹ = Cushion seal configuration for use with pneumatic service.
² = Cushion bushing for use with hydraulic service.
CAUTION:
Before making any adjustment, turn off the system
pressure. Never adjust cushion adjustment screw out
past flush with end cap or counterbore. DO NOT
OVERTIGHTEN.
The standard cushions operate over the last 30° of
rotation in either or both directions.
To Adjust:
Using an Allen wrench, turn Adjustment Screw, #21,
clockwise or more cushioning, counterclockwise for less
cushioning.
Cushion Option
LTR Series
20
21
22
26
23
24
25
27
30
28
29
31
32
33
34
35
Parts Identification
ITEM DESCRIPTION QTY.
20 O-RING, ADJUSTMENT SCREW 1
21 CUSHION ADJUSTMENT SCREW 1
22 CUSHION SEAL 1
23 CUSHION SEAL WASHER11
24 RETAINING RING11
25 CUSHION PLUG 1
26 END CAP 1
27 CUSHION BUSHING21
28 O-RING, ADJUSTMENT SCREW 1
29 FLOW CONTROL ADJ. SCREW 1
30 END CAP 1
31 PLUG 1
32 O-RING, PLUG 1
33 CHECK BALL 1
34 CHECK SPRING 1
35 CHECK PLUG 1
Parker Hannifin Corporation
Pneumatic Division
Wadsworth, Ohio USA
www.comoso.com 800.696.6165

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Catalog HY03-1800/US Maintenance Instructions and Service
1800_maint.pmd, M&A
Installation &
Maintenance
PTR/LTR ONE COMPLETE TURN OF
MODEL ADJUSTER CAUSES SPECIFIED
CHANGE IN ROTATION
101/102 4.0°
151/152 4.6°
201/202 3.2°
251/252 3.2°
321/322 2.4°
Stroke Adjust Options
Stroke adjusters will reduce the angle of rotation by 10° or
30° in either or both directions. Typical applications are for
initial set up purposes where exact rotation requirements may
change between various operations.
CAUTION: Before making any adjustments, turn off system
pressure and ensure that no residual pressure
exists in the actuator.
30° Stroke Adjust Option with Bumper30° Stroke Adjust Option
10° Stroke Adjustment with Cushion Option
(Single Rack Units Only)
NOTE: Quantities shown are as required per end cap option
specified.
Standard cushions operate over the last 30° of rotation.
Stroke adjusters will decrease the cushion length by the
same amount. For example, reducing the rotation by 5°
yields 25° cushion length.
To Adjust:
1. Loosen Jam Nut, #40.
2. Turn Stroke Adjuster, #41 clockwise to reduce stroke,
counterclockwise to increase stroke.
3. Tighten Jam Nut, #40.
4. Resume system pressure.
LTR Series
36
39
37
38
41
40
41
40
38
43 44
45
25
27
22 23
20
39
21
24
19
37
38
18
42
39 41
40
Parts Identification
ITEM DESCRIPTION QTY.
36 PISTON BOLT 1
37 END CAP 1
38 THREAD SEAL 1
39 LOCK WASHER 1
40 JAM NUT 1
41 STROKE ADJUSTER 1
42 STROKE ADJUST HEAD 1
43 STROKE ADJUST BLOCK 1
44 O-RING, STROKE ADJUST BLOCK 1
45 END CAP 1
Parker Hannifin Corporation
Pneumatic Division
Wadsworth, Ohio USA
www.comoso.com 800.696.6165

6
1800_maint.pmd, M&A
Catalog HY03-1800/US Maintenance Instructions and Service
Mounting Options
Mounting options utilize existing face and base mounting
holes.
Shaft seal covers are designed to prolong bearing life by
isolating them from external contamination and pressure.
NOTE: 1= Quantity is 2 if double-end shaft extension is
specified.
2= Quantity is 0 if double-end shaft extension is
specified.
See next page for details on Items 55 & 56.
50
52
54
51
50
53
52
46
47
49
48 46
56
55
LTR SeriesParts Identification
ITEM DESCRIPTION QTY.
46 FLANGE BOLT 4
47 FRONT FLANGE 1
48 FOOT FLANGE 1
49 PILOT RING 1
50 SHAFT SEAL COVER SCREW 6
51 SHAFT SEAL 11
52 O-RING 2
53 SHAFT SEAL COVER WITH HOLE 11
54 SHAFT SEAL COVER, SOLID 12
FRONT/REAR
FLANGE MTG. FOOT
FLANGE MTG.
PILOT RING MTG.
SHAFT SEAL COVER
OPTIONS 'S' MAGNET PISTON RING
OPTION 'M' W/SWITCH
(ORDER SWITCH SEPARATELY)
Parker Hannifin Corporation
Pneumatic Division
Wadsworth, Ohio USA
www.comoso.com 800.696.6165

7
Catalog HY03-1800/US Maintenance Instructions and Service
1800_maint.pmd, M&A
Installation &
Maintenance
NOTE: Quantities shown are as required per end cap option
specified.
Seal Kit Ordering Information
- Standard units are equipped with Nitrile seals.
- Optional seal compounds are available.
- See parts list for items contained in seal kit.
- Seal kit part numbers as shown:
LTR SeriesParts Identification, Seal Kits
ITEM DESCRIPTION QTY.
55 REED SWITCH KIT 1
(Lead Type or Quick Connect)
56 Magnet 2
57 HALL EFFECT SWITCH KIT 1
(Lead Type or Quick Connect)
58 PROXIMITY SWITCH 1
59 O-RING, ADAPTER BLOCK 1
60 SCREW, SPACER BLOCK 4
61 SPACER BLOCK 1
62 O-RING, SPACER BLOCK 1
63 END CAP 1
64 ADAPTER BLOCK 1
65 SCREW, ADAPTER BLOCK 2
57
56
64
65 58
59 60
63
62
61
NOTE: This seal kit contains parts to reseal Design Series "A", "B" or "C" LTR Series rotary actuators. If your actuator is a "C"
Design Series, use the seals and wear bands provided to assemble the pistons as shown below left. If your actuator is Design
Series "A" or "B", only the piston seal is required, as there will not be grooves to accept wear bands on these pistons. As-
semble the piston seal provided in the groove which will be closest to the fluid pressure when the piston is reinstalled, as
shown below right. Although these pistons have two seal grooves, the superior design of the piston seals which are now being
utilized allows for more efficient performance than possible with the old design. Contact the factory or your local representative
for information on how to update "A" or "B" Design actuators.
Design Series "C"
LTR Series rotary actuators with Design Series suffix "C" at
the end of the model number have the piston/piston sealing
configuration illustrated above. Each piston is equipped with
two non-metallic wear bands and one standard Molythane
Polypak seal with backup ring for superior wear resistance.
Design Series "A" & "B"
LTR Series rotary actuators with Design Series suffix "A" or
"B" at the end of the model number should be reassembled
with the piston/piston sealing configuration illustrated above.
These models were originally equipped with two standard
pneumatic lip seals with Teflon backup rings; this configura-
tion is replaced with one standard Molythane Polypak seal
with Teflon backup ring.
PSK
Parker Seal Kit
LTR322
Base Model
V
Omit - Standard
V = Fluorocarbon
Q = Quad Ring Piston Seals
W = Carboxilated Nitrile Piston Seals
—
PTFE
WEAR
BANDS
STANDARD
MOLYTHANE
POLYPAK SEAL
PISTON
TEFLON BACK-UP RING
TEFLON
BACK-UP RING
STANDARD
MOLYTHANE
POLYPAK SEAL
PISTON
Parker Hannifin Corporation
Pneumatic Division
Wadsworth, Ohio USA
www.comoso.com 800.696.6165