Value Collection 1230-4250 5C Round Collet 26.50mm

Product Description

The VALUE COLLECTION 1230-4250 is a 5C round collet machined from steel, designed for use in 5C-compatible lathes, collet chucks, and spin fixtures found in machine shops and production environments. The collet holds round workpieces with a bore size of 26.50mm and delivers a total indicator runout (TIR) of 0.015mm, providing consistent concentricity for turning, milling, and grinding operations. The internal thread is 1.041 inches-24 and the external thread is 1.242 inches-20, conforming to standard 5C geometry. Machinists, tool-and-die makers, and CNC setup technicians install this collet as part of workholding setups requiring repeatable, accurate part positioning.

This collet is suited for round-stock workholding in both manual and CNC lathe applications. It is commonly used in job shops and production facilities where 5C collet systems are the standard workholding method. The 26.50mm bore accommodates round bar stock or turned parts of that diameter. Its steel construction handles the clamping forces and wear cycles typical of repetitive production runs without deforming the collet nose or bore.

Key Features

• 26.50mm round bore accommodates standard round stock of that diameter
• TIR of 0.015mm ensures tight concentricity for precision turning and grinding
• Steel construction resists deformation under repeated clamping cycles
• Internal thread: 1.041 inches-24; external thread: 1.242 inches-20, standard 5C dimensions
• Lightweight at 0.5 pounds, minimizing spindle load

Compatibility

Designed as an OEM-style replacement or standard addition for 5C collet-compatible lathes, collet chucks, indexers, and spin fixtures that accept the standard 5C collet form factor.

Installation Notes

A qualified machinist or tooling technician should install and seat 5C collets. Power down and lock out the spindle drive before inserting or removing collets from the chuck or closer. Inspect the collet bore and the spindle nose for burrs or debris before installation, as contamination will directly increase runout. Use a collet closer or drawbar tightened to the machine manufacturer's specification — do not overtighten, as this can collapse the collet slots and damage the bore.