Parker LTR Series Hoja de datos

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

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.

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

13 14

11 12

Parker Hannifin Corporation

Pneumatic Division

Wadsworth, Ohio USA

www.comoso.com 800.696.6165

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

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

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

43 44

22 23

39 41

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

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.

48 46

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

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

65 58

59 60

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

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

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