Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
TECHNIKS Retention Knob: CAT50 Taper, 45° - CAT Retention Knobs
TECHNIKSCAT Retention Knobs

TECHNIKS Retention Knob: CAT50 Taper, 45°

The TECHNIKS Retention Knob is a CAT50 taper, 45°, 1.14 in diameter CAT retention knob (MPN 21005). It is manufactured to ANSI standards by TECHNIKS.

SKU 3G-OTH-265333

Brand
TECHNIKS
Item
Retention Knob: CAT50 Taper, 45°
Category
CAT Retention Knobs
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

TECHNIKS
Manufacturer Part Number
21005
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The TECHNIKS Retention Knob is a CAT50 taper, 45°, 1.14 in diameter CAT retention knob (MPN 21005). It is manufactured to ANSI standards by TECHNIKS.

Frequently Asked Questions

What is the TECHNIKS Retention Knob CAT50 used for?

The TECHNIKS Retention Knob CAT50 (MPN 21005) secures CAT50 taper tool holders in CNC machine spindles. It is commonly used in metalworking and machining operations where precise tool retention and quick tool changes are required. This ANSI-standard knob ensures reliable clamping in compatible spindle systems.

What are the specifications of the TECHNIKS Retention Knob 21005?

The TECHNIKS Retention Knob 21005 features a CAT50 taper, a 45° angle, and a 1.14 in diameter. It is manufactured to ANSI standards by TECHNIKS. The manufacturer part number is 21005. This knob is designed for use with CAT50 tool holders in CNC machining centers.

Where to buy TECHNIKS Retention Knob CAT50 worldwide?

You can source the TECHNIKS Retention Knob CAT50 (MPN 21005) through 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. 3G Electric supplies this ANSI-standard retention knob for CNC applications.

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

To select the correct TECHNIKS retention knob for a CAT50 spindle, verify the taper size (CAT50), the knob diameter (1.14 in for MPN 21005), and the pull-stud angle (45°). Ensure the knob meets ANSI standards and matches your machine manufacturer's specifications. TECHNIKS knobs are designed for reliable tool retention in CNC spindles.

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
TECHNIKS Retention Knob: CAT40 Taper, 45°, 0.74 in Dia (MPN 21003). Key specifications — attr1033406: TECHNIKS; attr1036358: ANSI.
TECHNIKS
TECHNIKS Retention Knob: CAT40 Taper, 45°, 0.74 in Dia (MPN 21003). Key specifications — attr1033406: TECHNIKS; attr1036358: ANSI.
TECHNIKS Retention Knob: CAT40 Taper, 60°, 0.59 in Dia (MPN 21003-60). Key specifications — attr1033406: TECHNIKS; attr1036358: MAS.
TECHNIKS
TECHNIKS Retention Knob: CAT40 Taper, 60°, 0.59 in Dia (MPN 21003-60). Key specifications — attr1033406: TECHNIKS; attr1036358: MAS.
TECHNIKS Retention Knob: Coolant Through, CAT50 Taper, 45°, 1.14 in Dia (MPN 21005-C). Key specifications — attr1033406: TECHNIKS; attr1036358: ANSI.
TECHNIKS
TECHNIKS Retention Knob: Coolant Through, CAT50 Taper, 45°, 1.14 in Dia (MPN 21005-C). Key specifications — attr1033406: TECHNIKS; attr1036358: ANSI.
TECHNIKS Retention Knob: Coolant Through, CAT40 Taper, 45°, 0.74 in Dia (MPN 21003-C). Key specifications — attr1033406: TECHNIKS; attr1036358: ANSI.
TECHNIKS
TECHNIKS Retention Knob: Coolant Through, CAT40 Taper, 45°, 0.74 in Dia (MPN 21003-C). Key specifications — attr1033406: TECHNIKS; attr1036358: ANSI.

More from TECHNIKS

View all TECHNIKS parts →
TECHNIKS Retention Knob: CAT40 Taper, 90°, 0.59 in Dia (MPN 21003-90). Key specifications — attr1033406: TECHNIKS; attr1036358: MAS.
TECHNIKS
TECHNIKS Retention Knob: CAT40 Taper, 90°, 0.59 in Dia (MPN 21003-90). Key specifications — attr1033406: TECHNIKS; attr1036358: MAS.
TECHNIKS Retention Knob: CAT50 Taper, 90°, 0.9 in Dia (MPN 21005-90). Key specifications — attr1033406: TECHNIKS; attr1036358: MAS.
TECHNIKS
TECHNIKS Retention Knob: CAT50 Taper, 90°, 0.9 in Dia (MPN 21005-90). Key specifications — attr1033406: TECHNIKS; attr1036358: MAS.
TECHNIKS Retention Knob: CAT50 Taper, 45°, 0.9 in Dia (MPN 21005-45). Key specifications — attr1033406: TECHNIKS; attr1036358: MAS.
TECHNIKS
TECHNIKS Retention Knob: CAT50 Taper, 45°, 0.9 in Dia (MPN 21005-45). Key specifications — attr1033406: TECHNIKS; attr1036358: MAS.
TECHNIKS Retention Knob: CAT50 Taper, 60°, 0.9 in Dia (MPN 21005-60). Key specifications — attr1033406: TECHNIKS; attr1036358: MAS.
TECHNIKS
TECHNIKS Retention Knob: CAT50 Taper, 60°, 0.9 in Dia (MPN 21005-60). Key specifications — attr1033406: TECHNIKS; attr1036358: MAS.
TECHNIKS Retention Knob: CAT40 Taper, 15°, 0.75 in Dia (MPN 21007-15). Key specifications — attr1033406: TECHNIKS; attr1036358: DIN.
TECHNIKS
TECHNIKS Retention Knob: CAT40 Taper, 15°, 0.75 in Dia (MPN 21007-15). Key specifications — attr1033406: TECHNIKS; attr1036358: DIN.
TECHNIKS Retention Knob: CAT40 Taper, 15°, 0.75 in Dia (MPN 21006-15). Key specifications — attr1033406: TECHNIKS; attr1036358: DIN.
TECHNIKS
TECHNIKS Retention Knob: CAT40 Taper, 15°, 0.75 in Dia (MPN 21006-15). Key specifications — attr1033406: TECHNIKS; attr1036358: DIN.
TECHNIKS Retention Knob: CAT50 Taper, 15°, 1.1 in Dia (MPN 21008-15). Key specifications — attr1033406: TECHNIKS.
TECHNIKS
TECHNIKS Retention Knob: CAT50 Taper, 15°, 1.1 in Dia (MPN 21008-15). Key specifications — attr1033406: TECHNIKS.
TECHNIKS Retention Knob: CAT40 Taper, 45°, 0.59 in Dia (MPN 21003-45). Key specifications — attr1033406: TECHNIKS; attr1036358: MAS.
TECHNIKS
TECHNIKS Retention Knob: CAT40 Taper, 45°, 0.59 in Dia (MPN 21003-45). Key specifications — attr1033406: TECHNIKS; attr1036358: MAS.