High-Precision Tool Holders for CNC Gear Grinding Applications

Gear manufacturing is one of the most demanding areas of CNC machining. Modern automotive, aerospace, and industrial transmission systems require gears with ultra-tight tolerances, perfect surface finish, and exceptional durability. CNC gear grinding is the final step in achieving the accuracy and performance these industries demand.

At KURATA Precision Tools, we deliver tool holding solutions specifically engineered to meet the challenges of gear grinding, ensuring exceptional rigidity, minimal runout, and superior stability throughout the process.

Why CNC Gear Grinding Requires Superior Tool Holding

Unlike milling or turning, gear grinding involves continuous abrasive contact, creating significant radial forces and heat. This means the tool holder must provide absolute concentricity, balance, and vibration control. Common challenges include:

• Maintaining micron-level accuracy for gear tooth geometry

• Preventing thermal distortion during high-speed grinding

• Extending tool life while ensuring a consistent surface finish

1. Shrink Fit Tool Holders – The Gold Standard for Precision Grinding

Shrink Fit Tool Holders are the first choice for high-speed gear grinding because they provide:

• Runout accuracy ≤0.003mm for perfect gear tooth profiles

• Unmatched balance at high spindle speeds

• Rigid clamping for grinding wheels or diamond dressers

Available Options:

• HSK Shrink Fit Tool Holders – For high-speed, high-precision gear grinding machines

• BT & BBT Shrink Fit Holders – For stability in heavy-duty gear grinding setups

• Shrink-Fit Extensions – For deep gear cavity finishing and hard-to-reach profiles

2. Hydraulic Tool Holders – Damping for Superior Surface Finish

When grinding gears for low-noise applications (e.g., EV transmissions), vibration control is crucial. Hydraulic tool holders provide:

• Excellent damping characteristics, reducing chatter

• Quick tool changes for different grinding wheel setups

• Reliable clamping force with micron-level runout control

3. Grinding Wheel Arbors – Precision Mounting for Gear Grinding Wheels

For mounting CBN or diamond grinding wheels, KURATA’s Grinding Wheel Arbors ensure:

• Perfect concentricity for ultra-smooth gear tooth finish

• Thermal stability in continuous grinding cycles

• Compatibility with various wheel sizes and machine interfaces

Additional Solutions for Gear Machining

While grinding is the final stage, gear production often involves pre-machining and finishing:

• ER Collet Holders – For drilling gear blank holes or tapping

• Face Mill Holders & Heavy-Duty Tool Holders – For roughing gear blanks before grinding

• Engraving Machine Tool Holders – For marking gear codes or serial numbers

Why Choose KURATA for CNC Gear Grinding?

• Ultra-High Precision: Tool body accuracy ≤0.002mm, runout ≤0.005mm

• ISO, DIN, JIS Compliance for global gear manufacturing standards

• Temperature-Controlled Grinding Workshop for ultimate accuracy

• State-of-the-Art CNC Machines from Germany, Switzerland, and Japan

In CNC gear grinding, where every micron matters, tool holding solutions from KURATA Precision Tools ensure that your gears meet the highest standards of accuracy, performance, and durability. Our Shrink Fit Tool Holders, Hydraulic Tool Holders, and Grinding Wheel Arbors deliver unmatched rigidity and precision, making them the ultimate choice for modern gear manufacturing.