" manufacturer of WORK HOLDINGS - standard CHUCKS, special chucks, VMC, HMC and vtl fixtures "

GRAFAR TECHNOLOGY

Standard Chucks

Grafar Technology offers a wide range of Standard Chucks, available with or without through-holes, designed for maximum safety and functionality in precise clamping on your lathe. We supply to OEM companies and Other customers, providing chucks in All Diameters with various jaw configurations including 2-Jaw, 3-Jaw, and 4-Jaw chucks.

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Hollow / Open Centre Chuck

A Hollow Centre Chuck is a specialized power chuck designed with a large through-hole in the center, allowing long bar stock or tube-shaped workpieces to pass through. It is commonly used in CNC lathes for high-precision machining of pipes, tubes, and shaft components. The hollow design enables efficient bar feeding, making it ideal for continuous production and automation.

Hollow Centre Chucks are typically hydraulically or pneumatically operated, ensuring fast and consistent clamping. Their high rigidity and balanced design allow for high-speed operations while maintaining excellent concentricity.

Features:

Large Through-Hole: Allows bar stock, pipes, and tubes to pass through, enabling efficient machining.

Hydraulic or Pneumatic Operation: Ensures automatic and reliable clamping for high-speed and mass production.

High-Speed Capability: Designed for stable performance at high rotational speeds.
Strong Gripping Force: Ensures a secure hold on workpieces, reducing slippage and vibration.
Reduced Setup Time: Ideal for bar-feeding operations in automated production lines.
Sealed Construction: Prevents coolant, dust, and chips from entering, enhancing durability and reducing maintenance.

Applications:

Machining of long bar stock, pipes, and tubes
High-speed turning operations in CNC lathes
Mass production industries requiring continuous bar feeding
Aerospace, automotive, and heavy machinery component manufacturing

A Solid Power Chuck is a high-performance work-holding device used in CNC lathes for precision machining. Unlike conventional chucks, it is designed to deliver superior clamping force, durability, and accuracy, making it ideal for high-speed and heavy-duty operations.

The Solid Power Chuck is a hydraulically or pneumatically operated chuck that provides automatic and consistent clamping, ensuring quick and efficient workpiece holding. It is made from high-strength alloy steel, which enhances its rigidity and wear resistance. The chuck is engineered with a compact, solid design that eliminates the need for a through-hole, increasing its overall strength and stability.

This type of chuck is commonly used in industries requiring mass production and high-speed machining, such as automotive, aerospace, and precision engineering. Its ability to handle large forces and high RPMs makes it a preferred choice for demanding CNC lathe applications.

Features:

High Clamping Force: Ensures a strong and secure grip on the workpiece, preventing slippage during machining.
Compact and Rigid Design: Solid construction enhances durability and minimizes deformation under heavy loads.
Hydraulic or Pneumatic Operation: Enables automatic and consistent clamping, reducing setup time.
High-Speed Capability: Designed to withstand high rotational speeds, making it ideal for high-speed turning operations.
No Through-Hole: Provides increased strength and stability, suitable for short and solid workpieces.
Low Maintenance: Sealed structure prevents contamination from coolant and chips, extending the chuck’s lifespan.