

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The CENTAUR RDF - 178 is a Series 100 AF collet designed to hold workpieces ranging from 7/16 inch to 29/64 inch (0.4531 inch maximum) in diameter. The collet measures 1.45 inches in overall diameter and 2.5 inches in overall length, making it a compact, precision workholding component suited for lathes, milling machines, and similar machine tool setups. It is installed and serviced by machinists and toolroom professionals requiring consistent, repeatable clamping force across a defined bore range.
The RDF - 178 fits applications where a Series 100 AF collet is specified, including general-purpose machining operations on manual and CNC equipment. Its defined capacity range of 7/16 inch to 29/64 inch makes it appropriate for holding round stock, bar stock, or tooling shanks within that dimension window. This collet is a direct-fit replacement or supplemental collet for any spindle or collet chuck that accepts the Series 100 AF standard.
Designed as an OEM-style replacement or direct-fit collet for spindles and collet chucks that accept the Series 100 AF collet standard with a capacity range of 7/16 inch to 29/64 inch.
Installation is performed by qualified machinists or toolroom technicians. Always power down and lock out the machine spindle before inserting or removing a collet. Ensure the collet bore and chuck taper are clean and free of chips or debris before seating. Do not exceed the stated maximum collet capacity, as over-range loading can damage the collet bore and reduce clamping accuracy.
Thanks for subscribing!
This email has been registered!