ER Collets | Collets

Frequently Asked Questions

1. What material are inner collets made from, and where are they used? ▼

Pactools ER collets are made from high-grade spring steel, offering excellent hardness and flexibility. They are commonly used in milling, drilling, and tapping operations for precise tool holding.

2. How do I choose the correct inner collet size? ▼

Select a collet size that matches your tool shank within a ±0.5 mm tolerance. Using a collet close to the shank diameter ensures a secure and accurate grip.

3. What is the lifespan of a collet, and how can I detect wear? ▼

Collets typically last over 1000 cycles with regular use. Signs of wear include tool slippage or poor surface finish—if noticed, it's time to replace the collet.

4. What is the benefit of a coolant flush (jet spray) collet? ▼

Jet spray collets provide direct coolant flow to the cutting area, improving chip removal and keeping the tool cooler during operation.

5. How should I maintain an inner collet? ▼

After use, clean the collet with a mild solvent and apply light oil to prevent rust. Always store collets in a dry, clean environment.