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.

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.

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.

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.

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.

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200123UP | ER COLLETS

$52.00

Chicago, USA Stock -

Canada Stock -

ER20-8.5mm-ULTRA-Precision Collet

Weight: 0.033 kg

Specification

Accuracy: Ultra Precision - Accuracy below 5 micron

BoreSize: 8.5mm

Series: ER20

Delivery and Shipping

US Domestic Shipping Only: We ship exclusively within the United States using UPS as our primary carrier.
Processing Time: Orders are typically processed within 1–2 business days. Orders placed on weekends or holidays will be processed on the next business day.
Delivery Times: Delivery times vary based on the shipping method and destination (estimates are provided at checkout). Please note that carrier delays (e.g., weather or unforeseen issues) are beyond our control.
Costs & Methods: UPS Standard, Expedited, and Express methods are available. Shipping rates are calculated based on weight and destination at checkout.
Tracking & Support: Tracking information will be emailed once shipped. For tracking issues, errors, or damaged/lost packages, contact us at sales@pactoolsusa.com or 262-282-2456.