CKZ3T50-135E-X2734: SMC Heavy-Duty Clamping Cylinder, the High-Precision Clamping Expert for Industrial Automation

CKZ3T50-135E-X2734 is a heavy-duty clamping cylinder produced by Japan’s SMC Corporation, belonging to the CKZ3T-X2734 series. This clamping cylinder utilizes a toggle mechanism, featuring high clamping force, a compact structure, and convenient adjustment. It is widely used in industrial automation control systems, providing reliable clamping and positioning solutions for various workpieces.

Core Product Advantages

1. High Clamping Force Design Employs a toggle mechanism, achieving a maximum clamping force of 4000N under conditions of 63mm bore, 100mm arm length, and 0.5MPa pressure, providing powerful gripping capability for heavy workpiece machining and assembly.
2. Lightweight and Compact Structure Features an aluminum alloy cylinder body design, reducing weight by up to 39%, while shortening the overall cylinder length by 7mm (compared to the CKP140 series), making it especially suitable for automation equipment with space constraints.
3. Convenient Sensor Adjustment Sensors are easy to adjust when changing the arm opening angle, significantly reducing setup time. Equipped with a metal box-type sensor protector, ensuring the sensor box is not damaged even during mis-setting or setting changes.
4. Splash-Resistant Construction Adopts a fully enclosed structure to prevent entry of welding spatter, making it particularly suitable for harsh working environments like welding production lines.

Technical Specifications

Specification Item	Specification Value	Description
Series​	CKZ3T-X2734 Series	Product series
Bore Size​	50 mm	Cylinder internal diameter
Arm Opening Angle​	135°	Clamping arm opening angle
Sensor Type​	E	Equipped with sensor function
Protector Type​	–	Rubber protector (equivalent to UL94 V0, flame retardant)
Operating Pressure Range​	0.3~0.8 MPa	Working pressure range
Maximum Operating Pressure​	0.8 MPa	Maximum working pressure
Proof Pressure​	1.2 MPa	Pressure withstand capability
Operating Fluid​	Air	Working medium
Ambient Temperature​	-10~60 °C	Working temperature range
Cylinder Stroke​	62.7 mm	Piston stroke
Cushioning Method​	Pad Cushioning	Cushioning form
Port Size​	G1/4	Port thread
Lubrication Method​	Oil-Free Type	Lubrication method
Allowable Holding Torque​	800 N·m	Clamping holding capability

Model Number Breakdown

• CKZ3T:​ SMC Heavy-Duty Clamping Cylinder Series Code
• 50:​ Bore size 50mm
• 135:​ Arm opening angle 135°
• E:​ Sensor type, equipped with sensor function
• X2734:​ Product specification code

Working Principle

The CKZ3T50-135E-X2734 employs a toggle clamping mechanism. When compressed air enters the cylinder, it drives the piston rod, which, through the toggle linkage, converts the piston’s linear motion into the clamping arm’s rotational motion, generating a powerful clamping force. The toggle mechanism features a self-locking function after passing the toggle point, allowing it to maintain the clamped state even if air pressure is lost, ensuring workpiece safety.

Workflow:

1. Compressed air, controlled by a solenoid valve, enters the cylinder.
2. The piston rod drives the toggle mechanism.
3. The toggle mechanism converts linear motion into rotational motion of the clamping arm.
4. The clamping arm generates clamping force to hold the workpiece.
5. The clamped state is detected by the sensor and fed back to the control system.

Typical Application Scenarios

1. Automotive Manufacturing Lines Used in automated production lines for automotive body welding and component assembly for rapid clamping and positioning of workpieces, ensuring welding and assembly accuracy, and improving production efficiency and product quality.
2. Welding Workstations In welding operations, the clamping cylinder secures workpieces, preventing movement during welding to ensure weld quality. Its splash-resistant construction effectively prevents entry of welding spatter, enhancing equipment lifespan.
3. Machining Equipment Serves as a core component of fixtures in machining equipment like milling and drilling machines, enabling rapid workpiece setup and positioning, reducing non-cutting time, and improving machining efficiency.
4. Automated Assembly Lines Used for clamping and positioning components in automated assembly lines for electronics, home appliances, etc., cooperating with robots to achieve automated assembly, improving production cycle time and assembly precision.

Installation and Usage Precautions

1. Installation Requirements The cylinder should be installed vertically, ensuring the clamping arm’s motion direction is perpendicular to the workpiece clamping surface. Before installation, check that the air supply pressure meets the 0.3~0.8 MPa requirement and ensure the air source is clean. During installation, ensure the weight of the clamping arm is within the maximum allowable range; otherwise, the cushioning may not function properly.
2. Operating Environment The operating temperature range is -10~60°C; avoid use in high or low-temperature environments. Maintain relative humidity within an appropriate range to prevent moisture from affecting equipment lifespan. The operating medium should be filtered through a 40μm or finer filter before use.
3. Piping Connection Before connecting pipes, thoroughly blow or clean out cutting powder, cutting oil, and dust inside the pipes. For threaded pipe and fitting connections, prevent chips from the pipe threads and fragments of sealing tape from entering the pipe interior. When using sealing tape, leave 1.5-2 thread pitches uncovered at the end of the threads.
4. Speed Adjustment Speed control valves must be used and set to: Non-clamping → Clamping: 1 second or more, Clamping → Non-clamping: 1 second or more. Excessive kinetic energy application may damage the cylinder.
5. Workpiece Installation Methods
   • Using only clamping force:​ First supply compressed air to the clamping port to keep the clamping arm in the clamped position; adjust the shim to match the pad height to the workpiece thickness; insert the shim further to generate the required clamping force.
   • Using a hard stop for clamping:​ Adjust the shim to zero the gap between the upper and lower stop blocks; insert the shim further to generate clamping force; adjust the shim for the pad to contact the workpiece.
6. Regular Maintenance It is recommended to regularly inspect the cylinder’s connecting pipes and valves for leaks. Clean the cylinder surface regularly. Periodically check the cylinder’s operational performance to ensure long-term stable operation. When restarting after prolonged shutdown, perform an air-flushing operation first.
7. Safe Operation Ensure the equipment is properly grounded before operation. Avoid contact with moving parts during operation. In case of equipment malfunction, stop immediately and have it repaired by professionals. Always depressurize before installation. Strictly avoid using the product beyond its rated pressure, temperature, and medium specifications.

Conclusion

The CKZ3T50-135E-X2734 heavy-duty clamping cylinder is the “High-Precision Clamping Expert” in the field of industrial automation. It perfectly combines high clamping force, lightweight design, and convenient adjustment, providing an efficient, reliable, and precise clamping solution for various industrial applications.

Choosing the CKZ3T50-135E-X2734 means choosing to drive your automation system towards higher efficiency with high clamping force and high reliability!

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