Techniks 05710-896 ER40 Tap Collet 0.896 Inch

Product Description

The TECHNIKS 05710-896 is an ER40 series tap collet designed to hold hand taps in CNC machining centers, knee mills, and other ER40-compatible toolholding setups. It accepts a collet size of 0.896 inches with a square drive size of 0.672 inches, making it suited for 1-1/16 inch to 1-1/8 inch hand taps. The ER40 collet format provides consistent gripping force and repeatable runout for threading operations. This collet is installed by machinists and toolroom technicians as part of a rigid or floating tap holder assembly.

This collet is intended for hand tapping applications in conventional and CNC machining environments. The ER40 series is a widely used collet standard, and this size targets larger-diameter tap work in production or job-shop settings. It does not support through-coolant delivery or tension-compression float, so it is best suited for rigid tapping setups where the machine controls feed rate precisely or for manual tapping operations on the bench or mill.

Key Features

• ER40 collet series for broad compatibility with ER40 toolholders
• 0.896 inch collet bore sized for 1-1/16 inch to 1-1/8 inch hand taps
• 0.672 inch square drive size for positive tap engagement
• Hand tap configuration - not rated for tension-compression or through-coolant use
• Lightweight at 0.5 pounds for easy handling during tool changes

Compatibility

Designed for use with ER40-standard toolholders and tap collet chucks that accept ER40 collets. Compatible with hand taps in the 1-1/16 inch to 1-1/8 inch size range.

Installation Notes

Installation is performed by machinists or toolroom technicians familiar with ER40 collet systems. Power down and lock out the machine spindle before inserting or removing collets. Use the appropriate ER40 collet nut and spanner wrench to achieve proper seating and clamping force - do not overtighten by impact methods. Verify tap square engagement in the collet drive before running any threading cycle.