Value Collection 230-4437 5C Expanding Collet Steel

Product Description

The VALUE COLLECTION 230-4437 is a 5C expanding collet machined from steel for use in 5C-compatible collet chucks, collet closers, and indexing fixtures found on lathes, grinders, and rotary tables. The expanding design grips workpieces from the inside, securing bores and tubular stock for turning, grinding, or inspection operations. The collet offers a concentricity of 0.0020 inches TIR, a head diameter of 3 inches, and a head length of 1 inch. It is installed and changed by machinists and toolroom technicians as part of standard 5C workholding setups.

This expanding collet is suited for machine shop environments handling both production and toolroom work. The grip range spans a minimum of 0.7500 inches to a maximum of 2.9375 inches, making it practical for a variety of bore sizes encountered in turning and cylindrical grinding applications. The internal thread size is 1.041 inches-24 and the external thread size is 1.242 inches-20, conforming to standard 5C collet geometry.

Key Features

• Expanding collet design grips workpieces internally for turning, grinding, and inspection
• Concentricity of 0.0020 inches TIR for consistent, repeatable workholding accuracy
• Grip range from 0.7500 inches to 2.9375 inches covers a wide variety of bore diameters
• Steel construction provides durability in production and toolroom machining environments
• Standard 5C thread geometry: internal 1.041 inches-24, external 1.242 inches-20
• Head diameter of 3 inches and head length of 1 inch for compatibility with standard 5C fixtures

Compatibility

Designed as an OEM-style replacement or direct-fit collet for standard 5C collet chucks, collet closers, and indexing fixtures that accept 5C-style expanding collets.

Installation Notes

Installation and changeover should be performed by a qualified machinist with the spindle fully stopped and all machine power off before handling collet components. Threads should be inspected for cleanliness and lightly lubricated with an appropriate thread lubricant before seating the collet. Do not exceed the collet grip range, as over-stressing the collet body can cause workholding failure or damage to the spindle nose. Follow the machine manufacturer guidelines for draw tube torque and collet closure procedure.