Categories
Hydraulic and Pneumatic

Tie Rod Style Hydraulic Cylinders

Cylinder Unit | Cylinder Hydraulic | Cylinder Pneumatic

Tie rod hydraulic cylinders style use high strength threaded steel rods to hold the two end caps to the cylinder barrel. They are most often seen in industrial factory applications. Small-bore cylinders usually have 4 tie rods, and large bore cylinders may require as many as 16 or 20 tie rods in order to retain the end caps under the tremendous forces produced.

Tie rod style cylinders can be completely disassembled for service and repair, and they are not always customizable. The National Fluid Power Association (NFPA) has standardized the dimensions of hydraulic tie-rod cylinders. This enables cylinders from different manufacturers to interchange within the same mountings.

Specification

Bore (mm) 32 • 40 • 50 • 63 • 80 • 100
Fluid Air
Operating pressure 0.5~9.9 kgf/cm²
Temperature -20~+80°C
Piston speed Max. 1m/s
Stroke (mm) (1) S 500 : +2.0~0
(2) 501 –  1250 : +3.2~0
Cushion length (mm) Ø32, Ø40, Ø50, Ø63 22
Ø80, Ø100 25

Theoretical Force

Bore (mm) Rod (mm) Action Pressed Area (cm²) Operating pressure (kgf/cm²)
3 4 5 6 7 8
32 12 push 08.04 24 32 40 48 56 64
pull 0,3131944 21 27 34 41 48 55
40 16 push 12.56 38 50 63 75 88 100
pull 10.56 32 42 53 63 74 84
50 20 push 0,8354167 59 79 98 118 137 157
pull 16.49 49 66 82 99 115 132
63 20 push 31.16.00 93 125 156 187 218 249
pull 28.02.00 84 112 140 168 196 224
80 25 push 50.24.00 151 201 251 301 352 402
pull 45.34.00 136 181 227 272 317 363
100 25 push 78.05.00 236 314 393 471 550 628
pull 73.06.00 221 294 368 442 515 589

Mounting Type

SD Standard
FA (MF1) Head rectangular flange
FB (MF2) Cap rectangular flange
LB (MS1) End angle flange
LA Floor
CA One ears elevis
CB Two ears elevis
CC Short elevis
TC (MT4) Intermediate trunnion

Structure and Parts List

Structure Part List
Item Part name Qty.
1 Rod cover 1
2 Headcover 1
3 Aluminum tube 1
4 Piston 1
5 Piston rod 1
6 Piston rod nut 1
7 Tie rod 4
8 Rod cover tie rod nut 4
9 Headcover tie rod nut 4
10 cushion screw 2
11 Powder bronze bushing 1
12 Piston rod seal 1
13 Cushion seal 2
14 Piston wearing 1
15 Induction magnet 1
16 Piston seal 1
17 Cover O-ring 2
18 Cushion screw O-ring 2

Seal Specifications

Bore Name Rod seal Piston packing Cushion packing Cushion Cover Piston
O-ring O-ring wearing
Qty. 1 1 2 2 2 1
32 PDU12 APA32 (PEI160) SM5 SM30 WRP32
40 PDU16 APA40 DR20 SM5 SM40 WRP40
50 PDU20 APA50 CTU28 SM6 SM50 WRP50
63 PDU20 APA63 CTU28 SM6 SM63 WRP63
80 PDU25 APA80 CTU35 SM8 SM80 WRP80
100 PDU25 APA100 CTU35 SM8 SM100 WRP100
Sensor Mounting and Aligment Structure
1. Loosen 2 M4 screws on the mounting bracket to move sensor(s) to the position you need. Sensor and Bracket
2. Tie 2 M4 screws to make sure the right position.
Sensor Bracket