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TECHNIKS Retention Knob: CAT50 Taper, 15° - CAT Retention Knobs
TECHNIKSCAT Retention Knobs

TECHNIKS Retention Knob: CAT50 Taper, 15°

TECHNIKS CAT Retention Knobs.

SKU 3G-OTH-265338

Also listed as: 2100815 · 21008 15

Brand
TECHNIKS
Item
Retention Knob: CAT50 Taper, 15°
Category
CAT Retention Knobs
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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.

Technical Specifications

TECHNIKS
Manufacturer Part Number
21008-15

Technical Documents

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TECHNIKS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

TECHNIKS CAT Retention Knobs.

Frequently Asked Questions

What is a TECHNIKS retention knob used for?

A TECHNIKS retention knob secures the tool holder into the spindle of a CNC machine. It is used in machining centers and milling applications to ensure the tool holder remains locked during high-speed operations, preventing tool pullout and maintaining precision.

What are the specifications of the TECHNIKS retention knob 21008-15?

The TECHNIKS retention knob model 21008-15 has a CAT50 taper, a 15° angle, and a 1.1-inch diameter. It is manufactured by TECHNIKS and is designed for use with CAT50 tool holders in CNC machining centers. The part number is 21008-15.

Where to buy TECHNIKS retention knobs worldwide?

You can source TECHNIKS retention knobs worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the TECHNIKS 21008-15 retention knob.

How to select the correct TECHNIKS retention knob for a CAT50 spindle?

To select the correct TECHNIKS retention knob, match the taper size (CAT50), angle (15°), and diameter (1.1 in) to your spindle and tool holder specifications. Verify the manufacturer part number (21008-15) and ensure compatibility with your machine's drawbar mechanism. Consult your machine manual for exact requirements.

Used in

Common applications for TECHNIKS
CNC milling — TECHNIKS BT40 end mill holders with coolant-through-spindle for high-speed machining of steel and aluminum.
High-pressure coolant machining — TECHNIKS sealed ER20 coolant collets for deep-hole drilling and chip evacuation in aerospace components.
Precision tool holding — TECHNIKS standard ER32 collets for holding drills and reamers in automated lathe operations.
Heavy-duty milling — TECHNIKS TG150 collets for clamping large-diameter tools in roughing operations on cast iron.
Coolant-through-spindle applications — TECHNIKS plug-style ER40 coolant collets for delivering coolant to the cutting edge in multi-axis machining centers.

TECHNIKS Products

3G Electric supplies TECHNIKS cat retention knobs. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
TECHNIKS Retention Knob: CAT40 Taper, 15°, 0.75 in Dia (MPN 21007-15)
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TECHNIKS Retention Knob: CAT40 Taper, 15°, 0.75 in Dia (MPN 21007-15)
TECHNIKS Retention Knob: CAT50 Taper, 45°, 1.14 in Dia (MPN 21005)
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TECHNIKS Retention Knob: CAT50 Taper, 45°, 1.14 in Dia (MPN 21005)
TECHNIKS Retention Knob: BT50 Taper, 60°, 23 mm Dia (MPN 17810)
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TECHNIKS Retention Knob: BT50 Taper, 60°, 23 mm Dia (MPN 17810)
TECHNIKS Retention Knob: BT50 Taper, 45°, 23 mm Dia (MPN 17805)
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TECHNIKS Retention Knob: BT50 Taper, 45°, 23 mm Dia (MPN 17805)

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