Techniks PSS-40 Retention Knob Socket CAT40 BT40 3/8 Drive

Product Description

The TECHNIKS PSS-40 is a retention knob socket designed for installing and removing retention knobs on CAT40 and BT40 taper toolholders. The socket features a 3/8 inch drive and accommodates a maximum wrench size of 75.0 mm, making it compatible with standard torque wrenches and ratchets used in CNC machining environments. Weighing 0.05 pounds, this compact tool is built for use at the machine or on the bench. CNC setup technicians and tool crib personnel are the primary users of this socket during toolholder assembly and maintenance procedures.

This socket is suited for use in machine shops, manufacturing facilities, and job shops running CNC machining centers equipped with CAT40 or BT40 spindle interfaces. It is used during toolholder assembly when seating or removing retention knobs to the correct torque specification. The compact drive size allows use with a standard 3/8 inch drive torque wrench, which is the recommended method for achieving consistent drawbar pull force on retention knobs.

Key Features

• Fits CAT40 and BT40 taper retention knobs for broad toolholder compatibility
• 3/8 inch drive accepts standard ratchets and torque wrenches
• 75.0 mm maximum wrench size accommodates standard CAT40 retention knob hex profiles
• Lightweight at 0.05 pounds for easy handling at the machine or bench
• Single-piece design with no socket number designation, sold individually

Compatibility

Designed for use with CAT40 and BT40 taper toolholders requiring retention knob installation or removal.

Installation Notes

Retention knob sockets are installed by qualified CNC setup technicians or toolroom personnel. Always use a calibrated torque wrench with the 3/8 inch drive to apply the manufacturer-specified torque to the retention knob - do not use an impact driver, as overtorquing can damage the toolholder threads. Ensure the toolholder is secured in a vise with soft jaws or a dedicated toolholder fixture before applying torque. Follow the machining center manufacturer guidelines for retention knob torque values.