A Chuck Jaw is a replaceable clamping component used to hold workpieces in place during machining. It is typically mounted on a faceplate or chuck using T-slot bolts, and is suitable for various machine sizes and table configurations. Chuck jaws are widely applied in large vertical lathes, gantry milling machines, CNC machine tools, and grinders.
Depending on the machining requirements, users can choose between hard jaws and soft jaws. Soft jaws can be re-machined to match the contour of the workpiece, ensuring higher clamping accuracy and surface protection.
Chuck jaws are designed with attention to clamping force distribution, wear resistance, and ease of installation. Selecting the right jaws enhances workpiece stability, machining efficiency, and surface quality—making them an essential component of any workholding system.

Closed Center High Precision Power Chucks: Essential for Precision Machining

Closed center high precision power chucks play a vital role in the field of precision machining, thanks to their outstanding rigidity and accuracy. Their strong clamping force effectively suppresses vibration during machining, ensuring workpiece stability and enabling high-precision results. Additionally, their superior chip- and dust-proof design significantly extends service life, ensuring long-term consistency in machining quality.

Key Advantages:

Exceptional Rigidity for Stable Machining

Made with high-strength materials and optimized structural design, these chucks deliver excellent rigidity to ensure stability under heavy-duty cutting and high-load operations.

Effectively reduce machining vibrations, enhancing surface finish and dimensional accuracy of the workpiece.

Precise Clamping for Perfect Accuracy

Advanced manufacturing processes and strict quality control ensure repeatable jaw positioning, enabling micron-level machining precision.

Stable clamping force prevents workpiece displacement or deformation during machining.

Versatile Application and Multi-Process Support

Compatible with various precision machining equipment, including CNC lathes, multi-tasking machines, and grinding machines.

Capable of handling short workpieces, heavy-duty cutting, and high-precision machining requirements.

High-Performance Protection for Extended Service Life

Precision sealing design effectively prevents intrusion of cutting fluid, chips, and other contaminants, protecting internal precision components.

Reduces maintenance frequency, extends service life, and lowers production costs.

Applications:
Closed center high precision power chucks are widely used in industries that demand exceptional accuracy and stability, such as:

Aerospace Industry

Used for machining high-precision parts such as aircraft engine components and structural parts.

Automotive Industry

Applied in precision machining of critical components like engines and transmission systems.

Mold Industry

Ensures precision and surface quality in mold manufacturing.

Closed center high precision power chucks are key tools for achieving high-precision and high-efficiency machining. Their superior rigidity, precise clamping performance, and strong protective design make them the ideal solution for demanding high-load, high-precision machining environments.

The Hollow Hydraulic Power Chuck (Single Acting Type) is a high-precision clamping device widely used on CNC lathes, milling machines, and grinding machines. It is designed to clamp a variety of workpiece shapes, especially round or near-round components.
The “single acting” mechanism allows each jaw to move independently, making it highly flexible when clamping irregular or eccentric-shaped workpieces. This feature is especially useful for internal bore machining or special contour parts that require precise centering.
In addition, its hollow-through structure enables bar or tube materials to feed through the center hole, making it ideal for automated long-bar machining. When combined with a bar feeder, it helps achieve continuous and highly efficient production.

A Synchronous Power Chuck, also known as a Wedge-Style Hydraulic Chuck, is a precision clamping device designed to control multiple jaws or clamping points simultaneously. It is commonly used in CNC lathes, automated machining systems, and applications requiring multi-directional precision clamping.
The key feature of this chuck is its synchronous jaw movement—all jaws open and close at the same time, maintaining excellent centering and concentricity during clamping. Internally, it uses a wedge mechanism or linkage system driven by hydraulic pressure. This transforms the linear motion of the piston into coordinated jaw movement, providing stable and powerful clamping performance.
By offering uniform clamping force distribution, it helps improve machining accuracy, stability, and operational efficiency. This makes the synchronous chuck ideal for holding round, disc-shaped, or shaft-type workpieces, as well as complex parts requiring multi-point clamping.

The Rotary Hydraulic Cylinder is the core driving component that operates hydraulic power chucks. By applying hydraulic pressure, the piston moves back and forth, transferring force to the internal mechanism of the chuck to enable precise clamping and releasing actions. It is typically mounted on the rear end of the machine spindle, and must offer quick response, high stability, and robust pressure resistance—especially in high-speed or heavy-cutting operations.
Hydraulic cylinders are available in different types depending on the chuck and machine setup:

1. Hollow Hydraulic Cylinder: Features a through-hole in the cylinder body, allowing bars, cables, air hoses, or pipes to pass through. This is ideal for bar feeding systems, multitasking machines, and signal/power transmission.

2. Solid Hydraulic Cylinder: Offers a compact, rigid structure with strong clamping force, suitable for setups that do not require internal passage.

Some cylinders are specifically designed with rotary and through-passage capabilities, making them ideal for applications that demand rotation, signal transmission, and automation integration—widely used in automated systems, heavy-duty machining equipment, and robotic platforms.