Tie rod style hydraulic cylinders

cylinder unit
cylinder hydraulic
cylinder pneumatic

Tie rod style hydraulic cylinders 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 S 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
8.04
24
32
40
48
56
64
pull
6.91
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
19.63
59
79
98
118
137
157
pull
16.49
49
66
82
99
115
132
63
20
push
31.16
93
125
156
187
218
249
pull
28.02
84
112
140
168
196
224
80
25
push
50.24
151
201
251
301
352
402
pull
45.34
136
181
227
272
317
363
100
25
push
78.5
236
314
393
471
550
628
pull
73.6
221
294
368
442
515
589
Mounting type
Drawing
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

Item
Part name
Qty.
1
Rod cover
1
2
Head cover
1
3
Alumunium tube
1
4
Piston
1
5
Piston rod
1
6
Pisto rud nut
1
7
Tie rod
4
8
Rod cover tie rod nut
4
9
Head cover tie rod nut
4
10
cushion screw
2
11
Powder brozen 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
O-ring
Cover
O-ring
Piston
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.
  2. Tie 2 M4 screws to make sure the right position.
Sensor and Bracket
Bracket
Drawing
CA+CB
CB+BK
TC+BK
Standard stroke
Unit: mm
Rod end connectors
Drawing
Y connector +pin
I connector
Pin
Floating joint
(P13.2-P13.3)
Vertical bearing (PHS)  (P13.4)
Cushion length
Bore
Length
32 • 40 • 50 • 63
20
80 • 100
25

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