TECHNIKS Retention Knob: Coolant Through, BT40 Taper, 60°
The TECHNIKS Retention Knob is a coolant-through BT retention knob designed for BT40 taper machines with a 60° angle and 15 mm diameter. This ISO-standard component, manufacturer part number 17820, facilitates…
SKU 3G-OTH-273000
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Product Description
The TECHNIKS Retention Knob is a coolant-through BT retention knob designed for BT40 taper machines with a 60° angle and 15 mm diameter. This ISO-standard component, manufacturer part number 17820, facilitates coolant delivery through the tool holder for improved machining operations.
Frequently Asked Questions
What is the TECHNIKS Retention Knob 17820 used for?
The TECHNIKS Retention Knob 17820 is used to secure BT40 taper tool holders in CNC machining spindles while allowing coolant to flow through the tool holder. It is ideal for high-pressure coolant applications in milling and turning centers, improving chip evacuation and tool life.
What are the specifications of the TECHNIKS Retention Knob 17820?
The TECHNIKS Retention Knob 17820 has a BT40 taper, 60° angle, and 15 mm diameter. It is an ISO-standard component with manufacturer part number 17820. The coolant-through design enables fluid delivery through the tool holder for enhanced machining performance.
Where to buy the TECHNIKS Retention Knob 17820 worldwide?
You can source the TECHNIKS Retention Knob 17820 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.
How to install a TECHNIKS coolant-through retention knob?
Install the TECHNIKS retention knob by threading it into the BT40 tool holder drawbar. Tighten to the manufacturer's recommended torque specification. Ensure the coolant passages are aligned and free of debris. Always follow the machine tool builder's instructions for proper seating and torque values.
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3G Electric supplies TECHNIKS coolant-through bt retention knobs. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.












