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The KENNAMETAL 2407088 is a retention knob socket designed for use with BT40 taper toolholders in CNC machining environments. It accepts a maximum wrench size of 0.76 inches and features a 1/2 inch drive, designated socket number RKW40. This socket is used to torque retention knobs into BT40 toolholders to the correct specification, ensuring secure tool clamping during milling and boring operations. It is a standard service tool for machine shops and toolroom technicians who maintain and assemble BT40 toolholder inventory. The part weighs 2.2 pounds.
This socket is applicable in shops running CNC machining centers that use BT40 spindle toolholders. It is used during toolholder assembly, disassembly, and routine maintenance. Typical users include CNC machinists, toolroom technicians, and maintenance personnel responsible for toolholder preparation and torquing. The 1/2 inch drive interface is compatible with standard torque wrenches commonly found in machine shop and toolroom settings.
Designed for use with BT40 taper toolholders requiring retention knob installation and removal with a maximum wrench size of 0.76 inches and a 1/2 inch drive torque wrench.
This socket is installed by toolroom technicians and CNC machinists using a 1/2 inch drive torque wrench. Always follow the toolholder and retention knob manufacturer torque specifications when assembling BT40 toolholders. Ensure the spindle and machine are de-energized and the toolholder is fully removed from the spindle before performing retention knob service. Inspect the socket for wear periodically to ensure accurate torque transfer.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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