Lyndex-nikken 800-054 R8 Collet 27/32 Inch Steel

Product Description

The LYNDEX-NIKKEN 800-054 is a steel R8 collet designed for use in milling machines equipped with an R8 spindle taper. It accepts a 27/32-inch bore diameter and features a 7/16-20 drawbar thread for secure spindle engagement. Built from steel for durability under repeated clamping cycles, this collet holds a Total Indicator Runout (TIR) of 0.0011 inches, making it suitable for precision milling operations where concentricity matters. Machinists and tool-and-die professionals use this type of collet to hold end mills, drill bits, and other straight-shank cutting tools in Bridgeport-style and similar knee mills.

This collet is used in manual and CNC knee mills and vertical milling machines that accept the R8 spindle standard. The 27/32-inch bore size suits a specific range of cutting tool shanks. It is a standard replacement or supplemental collet for shops running R8-spindle machines in general machining, maintenance, and production environments. The 7/16-20 drawbar thread is consistent with the R8 tooling system commonly found in job shops and machine tool training facilities.

Key Features

• 27/32-inch bore diameter for precise straight-shank tool holding
• R8 spindle taper compatibility for standard knee mill applications
• 7/16-20 drawbar thread for secure spindle connection
• 0.0011-inch TIR for reliable concentricity in milling operations
• Steel construction for long service life under repeated use

Compatibility

Designed as an R8-standard collet for use in milling machines with an R8 spindle taper and a 7/16-20 drawbar thread.

Installation Notes

Installation and removal should be performed by a qualified machinist with the machine fully powered down and the spindle locked. Clean the spindle bore and collet taper surfaces before seating to ensure proper concentricity and prevent fretting wear. Tighten the drawbar to snug engagement - do not overtighten, as this can distort the collet bore. Follow the machine manufacturer's drawbar torque guidelines and applicable shop safety procedures when changing tooling.