Technical Parameters of CNC Lathe Collets

Technical Parameters of CNC Collets

1. Runout Accuracy

• Standard collets: ≤ 8 μm at 3×D

• Precision collets: ≤ 5 μm at 3×D

• Ultra-precision collets: ≤ 3 μm at 3×D

Technical impact:
Lower runout improves surface finish, reduces tool vibration, and extends tool life, especially in high-speed milling and drilling.

2. Clamping Range

• Typical clamping range: 1.0 mm

• Wide-range collets: 1.5–2.0 mm

Technical impact:
Narrow clamping ranges provide higher concentricity and better repeatability.

3. Clamping Force

• Uniform 360° clamping

• High torque transmission capability

• Suitable for heavy milling and drilling operations

Technical impact:
Stable clamping prevents tool slippage and ensures consistent cutting performance.

4. Material & Heat Treatment

• Material: Alloy spring steel

• Hardness: HRC 44–48

• Precision ground and heat treated

Technical impact:
Ensures fatigue resistance and long service life under repeated clamping cycles.

5. Balancing Grade

• Dynamic balance: G2.5 at 25,000 RPM

• Optional high-speed balancing for higher RPM applica

Technical Paramet

1. Inner Diameter Tolerance

• Standard tolerance: ± 3 μ

• High-precision option: ± 1–2 μm

Technical impact:
Tighter tolerance improves workpiece straightness and dimensional

2. Material Options

• Hardened tool steel

• Carbide guide bushings

Hardne

• Tool steel: HRC 60–62

• Carbide: HRA 88–92

3. Surface Finish

• Inner surface roughness: Ra ≤ 0.2 μm

Technical impact:
Reduces friction and prevents mater

4. Lub

• Optimized oil groov

• Reduced heat generation and wear

5. Service Life

• Designed for long-term dime

• Predictable wear behavior fo