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MCK series welding clamping Pneumatic cylinder is a direct-push welding clamping cylinder—distinct from the swing-crank style of the JCK/JSK series—that achieves clamping by using the piston rod to linearly push a Y-shaped connector. Designed to withstand weld spatter and harsh welding environments, it is widely used in automotive welding jigs and fixtures.
Operating Principle: A double-acting cylinder drives an internal crank-slider mechanism to actuate the clamping arm. Once clamped, the mechanism locks via a mechanical dead-point, maintaining clamping force even if the air supply is cut off. The opening angle can be adjusted on-site from 5° to 135° using an internal adjustment nut—without replacing parts—and the overall length of the unit remains unchanged regardless of the angle.
Suitable applications: Automotive welding jigs and fixtures, sheet metal welding tooling, clamps requiring frequent adjustment of opening angles, and mixed-model production lines; ideal for new design projects where swing angles require repeated modification during the debugging phase.
Excellent resistance to dust and welding spatter: The front cover features a stainless steel dust scraper ring that protects the cylinder from damage caused by dust and flying welding spatter, offering greater reliability than a dust boot.
Multiple opening sizes: Opening sizes Type A and Type B are available.
A variety of piston rod end fittings are available: Y-type with M6 mounting hole, and YW-type without M6 mounting hole.
Features built-in cushioning adjustment and speed-limiting flow control devices.

| 구경(내경, mm) | 40 | 50 | 63 | 80 |
| 조치 유형 | 양방향 작동 방식 | |||
| 작업 매체 | 공기 (40 µm 메쉬 스크린을 통해 여과된) | |||
| 작동 압력 범위 | 0.15~1.0 MPa(22~145 psi) | |||
| 압력 내성 보장 | 1.5 MPa (215 psi) | |||
| 작동 온도 | -20°C~70°C | |||
| Operating speed range | 50~500mm/s | |||
| 쿠션 유형 | Rear-end air cushioning + front-end air cushioning (optional) | |||
| Flow-limiting valve | Standard front and rear equipment | |||
| 윤활 | 아니요 | |||
| Mounting and fixing method | Double hinged ears | |||
| 연결 포트 크기 | PT1/4 | PT3/8 | ||
이 연결부에 사용할 수 있는 나사산 유형으로는 PT, G, NPT가 있습니다.
| 구경(내경, mm) | 표준 스트로크(mm) | 최대 스트로크 |
| 40.50.63.80 | 50.75.100.125.150 | 150 |


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