ER Collet: Elastic Tool Clamping with Wide Range and Quick Change

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ER Collet: Elastic Tool Holder with Wide Applications

A type of tool holder with an elastic collet structure, clamping tools by tightening nuts. It has a wide clamping range, quick tool change, and common specifications like ER11/ER16/ER20, suitable for holding small-diameter milling cutters and drills with ±0.01mm precision, widely used in small-to-medium CNC machining centers.
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Advantages of the product

Rapid Tool Changes

Nut-tightening mechanism allows tool swaps in <15 seconds, reducing setup times in high-mix production. Compatible with automatic tool changers (ATC) for lights-out manufacturing.

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R8 collets like many other collets used in older machines, are a legacy collet system with a Morse taper shank R8 taper. Their clamping ranges fall within the 3-20mm limits with a runout of 0.01 mm which makes them capable of performing general tasks such as drilling or low precision milling on general equipment. While being less precise than ER collets, their simple construction makes them useful for frugal institutions such as educational laboratories or equipment maintenance workshops.

Frequently Asked Questions

Are ER collets cost-effective?

Yes, they are more affordable than hydraulic chucks while offering comparable precision, ideal for SMEs and educational institutions, fitting BT/HSK/CAT spindle interfaces and meeting ISO 26623.

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Customer Reviews

Reed

Priced 30% lower than hydraulic chucks, ER collets offered comparable precision for our small shop. The quick nut-tightening reduced tool changes to 15s, boosting our prototyping speed.

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5c collet er collet set er collet nut er collet coolant er collet
Wear-Resistant Construction

Wear-Resistant Construction

Made from spring steel (48-52HRC) with anti-corrosion coatings (Ni-P), they withstand repeated clamping cycles (≥100,000 times) in harsh workshop environments.
Industry Standard Compatibility

Industry Standard Compatibility

Fits BT, HSK, and CAT spindle interfaces, widely used in Asian and European machining centers. Meets ISO 26623 standards for collet performance and reliability.
Versatile Application Scenarios

Versatile Application Scenarios

Used in mold making for fine details, electronics for micro-components, and automotive for gear machining. Supports both roughing and finishing operations with quick tool changes.