1. Weld Spatter Protection: Features a stainless steel scraper ring on the front cover—replacing standard dust boots—to block weld spatter and dust, making it suitable for harsh arc and spot welding environments.
2. Toggle-Action Force Amplification: Operates at 0.3–0.8 MPa; amplifies clamping force at the dead-center position, ideal for clamping in sheet metal welding applications.
3. Versatile Clamp Arms: Available in AM1/AM2/AM3/AM4 specifications, supporting L, C, and R offset configurations with selectable opening angles ranging from 15° to 120°.
20 years of experience in the manufacturing industry, delivering custom solutions tailored to your exact specifications and production requirements.
20+ Years ExperienceThe quality we deliver rivals that of major brands, as we strictly adhere to the technical standards of leading domestic and international labels.
ISO-Aligned QualityLocated in Liushi, Yueqing, Wenzhou, Zhejiang Province, China, our company boasts a comprehensive product component supply chain, advanced high-end equipment, and a long-standing manufacturing heritage.
Direct Factory PricingWelding clamping cylinders—also known as heavy-duty clamping cylinders—are specifically designed for automotive sheet metal welding fixtures.
Utilizing a crank-toggle force-amplification mechanism,
they generate high clamping force from low air pressure and serve as specialized clamping actuators for welding assembly lines.
1. Suitable for automotive welding shop environments;
2. The front cover features a durable stainless steel dust seal that protects the cylinder from damage caused by dust and welding spatter—a more reliable solution than a dust boot;
3. Interference-resistant sensors should be selected for use in strong magnetic field environments;
4. Air intake ports are available on three sides; includes built-in cushioning and speed-limiting adjustments;
5. A wide range of sensor options is available.
| Bore Size (Inner Diameter mm) | 40 | 50 | 63 | 80 |
|---|---|---|---|---|
| Loại hành động | Double Acting | |||
| Phương tiện làm việc | Air (filtered through 40μm or above filter) | |||
| Working Temperature | -20°C ~ +70°C | |||
| Phạm vi áp suất làm việc | 0.15~1.0MPa | |||
| Proof Pressure | 1.5MPa | |||
| Operating Speed Range | 50–500 mm/s | |||
| Cushioning | Rear-end air cushion + Front-end air cushion | |||
| Flow Control Valve | Standard at both front & rear | |||
| Mounting Type | Double Clevis | |||
| Piston Rod Outer Dia. (mm) | 20 | 20 | 20 | 25 |
| Port Thread | PT1/4 | PT3/8 | ||
1. Various clamping arm specifications available
2. Crank-slider mechanism
3. Multi-directional mounting
4. Integrated design
5. Various sensor options available
| Bore Size (Inner Diameter mm) | 40 | 50 | 63 | 80 |
|---|---|---|---|---|
| Loại hành động | Double Acting | |||
| Phương tiện làm việc | Air (filtered through 40μm or above filter) | |||
| Working Temperature | -20°C ~ +70°C | |||
| Phạm vi áp suất làm việc | 0.3~0.8MPa | |||
| Proof Pressure | 1.2MPa | |||
| Max Opening Angle (Horizontal Arm) | AM1: 135° AM3: 105° | AM1: 135°, AM2: 135°, AM3: 135°, AM4: 135° | ||
| Max Opening Angle (Vertical Arm) | AM1: 120° AM3: 105° | AM1: 105°, AM2: 105°, AM3: 105°, AM4: 105° | ||
| Min. Open/Close Time | 1 second to clamp, 1 second to open | |||
| Cushioning | Air Cushion | |||
| Position Sensing | Inductive Proximity Sensor | |||
| Port Thread | PT1/8 | PT1/4 | PT1/4 | PT1/4 |
| No. | Series | Type | Key Features | Cross-Replacement |
|---|---|---|---|---|
| Welding Clamp Cylinder (Domestic / Airtac) | ||||
| 01 | MCK | Welding clamp / compound | Airtac welding clamp cylinder; purpose-built for automotive welding lines; stainless steel front-cover wiper resists spatter (more reliable than rubber boots); 3-side porting; built-in cushion + flow control; magnetic-field-resistant sensor option; bore 25–80 | ↔ JSK, CK1A |
| 02 | JSK | Welding clamp | Welding-fixture clamp cylinder; spatter-resistant construction; same class as MCK; for body-in-white welding fixture clamping | ↔ MCK, CK1A |
| Festo Hinge Clamp (Asian Auto Body Standard) | ||||
| 03 | DWA | Hinge clamp cylinder | Festo hinge cylinder for clamping parts during welding; swivel bearing on bearing cap for easy mounting; integrated flow control and end-position cushioning; rod wiper seal against spatter; Asian automotive body-production standard | ↔ DWB, DWC |
| 04 | DWB | Hinge clamp cylinder | Festo DW-series hinge clamp; same spatter-resistant design; integrated cushion; for body welding fixtures | ↔ DWA, DWC |
| 05 | DWC | Hinge clamp cylinder | Festo DW-series hinge clamp; different mounting / stroke variant; spatter-resistant; for automotive welding stations | ↔ DWA, DWB |
| SMC Welding-Specific | ||||
| 06 | CK1A | Welding clamp / clevis | SMC clamp cylinder for auto welding; clevis width 16.5 mm; built-in speed controller; air cushion; magnetic-field-resistant auto switches for strong-magnet environments; bore 40/50/63; mainstay of automotive welding lines | ↔ MCK, JSK |
| 07 | CA1B | Spatter-resistant standard cylinder | SMC CA2 XC88/XC89/XC91 spatter-resistant variant; fluoropolymer end covers + stainless piston rod; resists arc-welding spatter; for general linear drive in arc-welding stations | ↔ DWC (anti-spatter standard) |
Brand names mentioned on this website are cited solely for reference regarding technical standards. This product is not an original product from the respective brand and is not authorized by that brand. It is manufactured in accordance with the corresponding brand’s technical specifications and features a similar appearance; however, it is an independently developed product and has no affiliation with the brand in question.
Automotive body-in-white welding tooling;
sheet metal spot welding and arc welding fixtures; automated welding and assembly lines;
rapid clamping and positioning for welding tooling.
Bag feeding, sealing head, hopper gate, carton flap folding, discharge pusher
Workpiece positioning and clamping, lifting mechanisms for loading and unloading, stopping mechanisms, and component press-fitting.
Welding fixture positioning, workpiece clamping, and component transfer
Assembly line stoppers, sorting pushers, and pallet lifting units.
Machine tool door opening/closing, workpiece feeding, and scrap ejection.
Conveyor guide plate, simple hold-down device (stainless steel version available for humid environments)
MYFEQD offers a comprehensive range of Clamping Cylinder solutions.
Our pneumatic actuators comply with the technical standards of major global brands,
providing quick solutions for model selection across various industrial
pneumatic systems.
Air drives the piston; a crank linkage swings the arm down to press the workpiece and pass over the dead center to self-lock.
It must hold under vibration, spatter, heat and air loss, which ordinary cylinders cannot ensure.
At full clamp, the linkage crosses the mechanical dead center, so the structure carries the force without relying on air pressure.
Self-lock types stay clamped; non-self-lock direct-push types release—check this when selecting.
A crank-slider (toggle) mechanism amplifies piston linear force into high arm clamping force.
Near the dead center, the toggle has very high mechanical gain, multiplying air thrust.
Heat and spark resistant; some use FKM seals.
No. Larger angles take longer and more space; choose only what loading requires.
Where releasing on air loss or pressure fluctuation is unacceptable, use over-center self-lock.
Swing for high force and self-lock; direct-push for low-height linear clamping.
Add heat shields and spatter boots, or heat-resistant models, to protect seals.
Strong magnetic fields require anti-magnetic sensors and strong-magnet options; standard switches flicker.
Torch, direct spatter paths and electrodes; leave room for heat and maintenance.
Place symmetrically at rigid points and sequence clamping to control distortion.
Most are pre-lubricated or long-life non-lube; no extra oil mist is needed.
Drain water, check leaks, lubricate pins, inspect arms and sensors, and clean spatter.
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