---
title: Power Cylinder CW｜ROCKY-ICHIMARU Co., Ltd.
description: This is the Power Cylinder CW page of ROCKY-ICHIMARU Co., Ltd., which boasts the world’s top share for tire curing press valves.
image: https://www.rocky-ichimaru.co.jp/hubfs/rocky_ichimaru_co_jp/images/ogp.png
---

## Product Overview

A cylinder with improved durability compared to the standard double-acting CW cylinder.  
Used for equipment with high operating frequencies or automated line equipment.  
*Collar screw and rod screw sizes differ from those of the CW cylinder.

## Product Features

### POINT

The cylinder is made of heat-treated special steel, making it lightweight with a streamlined shape.

### POINT

The rod portion of the piston rod is hardened to prevent rust and scratching, ensuring a long service life.

### POINT

U-packing is used for the rod packing, so there is almost no external leakage.

### POINT

The sliding parts of the piston rod and rod cover have been lengthened to further increase strength against uneven loads.

### POINT

A hook wrench is attached to the rod end to make it easier to attach the jig to the piston rod tip.

### POINT

Cylinders of 50 kN or less can also be manufactured.

## Main Specifications

### Dimension table/Selection table

| Output | Push: 500, Pull: 250 kN (Push: 50, Pull: 25 tons) | Push: 800, Pull: 400 kN (Push: 80, Pull: 40 tons) | Push: 1000, Pull: 500 kN (Push: 100, Pull: 50 tons) | Push: 1200, Pull: 600 kN (Push: 120, Pull: 60 tons) | Push: 1500, Pull: 700 kN (Push: 150, Pull: 70 tons) |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Standard type | SPW-5030 | SPW-5040 | SPW-5050 | SPW-8030 | SPW-8040 | SPW-8060 | SPW-10040 | SPW-10050 | SPW-10060 | SPW-12040 | SPW-12050 | SPW-12060 | SPW-15040 | SPW-15050 | SPW-15060 |  |
| (A)Stroke mm | 300 | 400 | 500 | 300 | 400 | 500 | 400 | 500 | 600 | 400 | 500 | 600 | 400 | 500 | 600 |  |
| (B)Minimum overall length mm | 633 | 733 | 833 | 694 | 794 | 894 | 842 | 942 | 1042 | 852 | 952 | 1052 | 902 | 1002 | 1102 |  |
| (C)Maximum overall length mm | 933 | 1133 | 1333 | 994 | 1194 | 1394 | 1242 | 1442 | 1642 | 1252 | 1452 | 1652 | 1302 | 1502 | 1702 |  |
| (D)Outside diameter | 141 | 176 | 196 | 216 | 236 |  |  |  |  |  |  |  |  |  |  |  |
| Ram pressure receiving area ㎠ | 70.84 | 113.04 | 143.06 | 176.62 | 213.71 |  |  |  |  |  |  |  |  |  |  |  |
| (E)Rod diameter mm | 67 | 85 | 95 | 110 | 120 |  |  |  |  |  |  |  |  |  |  |  |
| (F)Rod thread diameter mm | M55 P3 | M75 P3 | M90 P3 | M100 P3 | M110 P4 |  |  |  |  |  |  |  |  |  |  |  |
| (G)Rod thread pitch  | 40 | 50 | 55 | 55 | 60 |  |  |  |  |  |  |  |  |  |  |  |
| (H)Coller thread diameter  | M135 P3 | M170 P3 | M190 P3 | M210 P4 | M230 P4 |  |  |  |  |  |  |  |  |  |  |  |
| (I)Coller thread pitch | 55 | 60 | 65 | 70 | 75 |  |  |  |  |  |  |  |  |  |  |  |
| (M)Oil filler port port thread diameter | Rc1/2 | Rc3/4 | Rc3/4 | Rc3/4 | Rc3/4 |  |  |  |  |  |  |  |  |  |  |  |
| (N)Oil filler port port thread diameter mm | Rc1/2 | Rc1/2 | Rc3/4 | Rc3/4 | Rc3/4 |  |  |  |  |  |  |  |  |  |  |  |
| (O)Oil filler port position mm | 108 | 125 | 165 | 170 | 175 |  |  |  |  |  |  |  |  |  |  |  |
| (P)Rod cover protrusion length mm | 10 | 10 | 10 | 10 | 12 |  |  |  |  |  |  |  |  |  |  |  |
| (Q)Rod protrusion length mm | 16 | 16 | 16 | 16 | 16 |  |  |  |  |  |  |  |  |  |  |  |
| Required oil quantity ㎖ | 2126 | 2834 | 3543 | 3392 | 4522 | 5562 | 5723 | 7154 | 8584 | 7065 | 8832 | 10598 | 8549 | 10686 | 12823 |  |
| Approximate weight kg | 65 | 74 | 83 | 108 | 123 | 138 | 164 | 182 | 200 | 203 | 225 | 247 | 257 | 283 | 309 |  |
| Recommended pump for operating the cylinder | A4 | 〇 | 〇 | 〇 | △ | △ | △ | - | - | - | - | - | - | - | - | - |
| A7 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | - | - | - | - | - | - | - | - |  |
| A15 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 |  |
| A22 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 |  |
| A37 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 |  |
| 1055 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 |  |
| 1155 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 |  |
| 11010 | - | - | - | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 | 〇 |  |

Notes: 〇...Good match  
             △…There are issues with the cylinder operation time, but it is usable  
             No symbol...Poor match

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