TECHNIKS Retention Knob: Coolant Through, CAT40 Taper, 45°
The TECHNIKS Retention Knob is a coolant-through CAT retention knob designed for CAT40 taper tooling, featuring a 45° angle and a 0.59-inch diameter. This MAS-standard component, manufactured under part number…
SKU 3G-OTH-270921
Need installation or engineering help?
Ask a question
Product Description
The TECHNIKS Retention Knob is a coolant-through CAT retention knob designed for CAT40 taper tooling, featuring a 45° angle and a 0.59-inch diameter. This MAS-standard component, manufactured under part number 21003-45CSF, enables coolant delivery through the tool holder for enhanced machining operations.
Frequently Asked Questions
What is the TECHNIKS Retention Knob 21003-45CSF used for?
The TECHNIKS Retention Knob 21003-45CSF is used to secure CAT40 taper tool holders in CNC machining spindles while enabling coolant delivery through the tool holder. It is ideal for high-pressure coolant applications in milling and turning operations, improving chip evacuation and tool life.
What are the specifications of the TECHNIKS Retention Knob 21003-45CSF?
The TECHNIKS Retention Knob 21003-45CSF has a CAT40 taper, a 45° angle, and a 0.59-inch diameter. It is a coolant-through design, manufactured under MAS standards, with part number 21003-45CSF. This knob is compatible with CAT40 tool holders requiring coolant-through capability.
Where to buy the TECHNIKS Retention Knob 21003-45CSF worldwide?
You can source the TECHNIKS Retention Knob 21003-45CSF from 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this TECHNIKS component.
How to install a coolant-through CAT40 retention knob?
To install a coolant-through CAT40 retention knob like the TECHNIKS 21003-45CSF, first clean the tool holder taper and spindle bore. Thread the knob into the tool holder drawbar using the correct torque per the manufacturer's specifications. Ensure the coolant passages align and test for leaks before operation.
Used in
Common applications for TECHNIKSTECHNIKS Products
3G Electric supplies TECHNIKS coolant-through cat retention knobs. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.













