Value Collection 1230-4246 5C Round Collet 24.50mm

Product Description

The VALUE COLLECTION 1230-4246 is a 5C round collet machined from steel for use in 5C-compatible collet chucks, collet blocks, and indexing fixtures found in production and toolroom environments. The collet accepts round workpieces at a 24.50mm capacity and holds a total indicator runout (TIR) of 0.015mm, making it suitable for turning, milling, and grinding operations where concentricity matters. The internal thread is 1.041 inches-24 and the external thread is 1.242 inches-20, conforming to standard 5C tooling dimensions. Installation and workholding setup is typically performed by machinists and toolroom technicians.

This collet is suited for use in manual and CNC lathes, rotary indexers, and collet fixtures equipped with a 5C spindle. It is appropriate for light to medium stock removal on round bar stock and shaft-type workpieces. The steel construction handles the clamping loads typical of production turning and milling without deforming the collet bore under normal operating cycles.

Key Features

• 24.50mm round bore capacity for round workpieces
• TIR of 0.015mm for consistent concentricity across repeated setups
• Steel construction for durability under production clamping loads
• Internal thread size: 1.041 inches-24
• External thread size: 1.242 inches-20
• Conforms to standard 5C collet tooling dimensions

Compatibility

Designed as a standard 5C round collet replacement or addition for any 5C-compatible collet chuck, collet block, or indexing fixture that accepts the 1.242 inches-20 external thread specification.

Installation Notes

Installation is performed by machinists or toolroom technicians. Always ensure the spindle or collet chuck is fully stopped and the machine is powered down before inserting or removing collets. Clean the collet seat and collet taper thoroughly before seating to avoid runout errors caused by chips or debris. Do not exceed the collet's rated capacity, as overloading the bore can permanently deform the collet and compromise workholding accuracy.