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 0.74-inch diameter. This ANSI-standard component, manufacturer part number 21003-C…
SKU 3G-OTH-270918
Also listed as: 21003C · 21003 C
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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 0.74-inch diameter. This ANSI-standard component, manufacturer part number 21003-C, enables coolant delivery through the tool holder for enhanced machining operations.
Frequently Asked Questions
What is a TECHNIKS Retention Knob 21003-C used for?
The TECHNIKS Retention Knob 21003-C is used to secure CAT40 taper tool holders in CNC machining spindles while enabling coolant-through delivery. This ANSI-standard component supports high-pressure coolant flow through the tool holder, improving chip evacuation, heat dissipation, and surface finish in milling and drilling operations.
What are the specifications of the TECHNIKS Retention Knob 21003-C?
The TECHNIKS Retention Knob 21003-C is a coolant-through CAT retention knob for CAT40 taper tooling. It has a 45° angle, a 0.74-inch diameter, and conforms to ANSI standards. The manufacturer part number is 21003-C. This design allows coolant to pass through the tool holder for enhanced machining performance.
Where to buy TECHNIKS Retention Knob 21003-C worldwide?
3G Electric supplies the TECHNIKS Retention Knob 21003-C to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery for international orders. Contact our team to source this ANSI-standard coolant-through CAT40 retention knob for your machining operations.
How to install a coolant-through CAT40 retention knob?
To install a coolant-through CAT40 retention knob like the TECHNIKS 21003-C, first clean the tool holder taper and spindle bore. Thread the knob onto the drawbar per the machine manufacturer's torque specification. Ensure the coolant passages align properly. Verify the 45° angle seats correctly against the spindle collet for secure retention and leak-free coolant flow.
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.
