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TECHNIKS Retention Knob: CAT50 Taper, 90° - CAT Retention Knobs
TECHNIKSCAT Retention Knobs

TECHNIKS Retention Knob: CAT50 Taper, 90°

The TECHNIKS Retention Knob is a CAT50 taper retention knob with a 90° angle and 0.9-inch diameter, identified by manufacturer part number 21005-90. This MAS-standard component is designed for use in CAT50 tooling…

SKU 3G-OTH-265339

Also listed as: 2100590 · 21005 90

Brand
TECHNIKS
Item
Retention Knob: CAT50 Taper, 90°
Category
CAT Retention Knobs
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

TECHNIKS
Manufacturer Part Number
21005-90

Technical Documents

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

Product Description

The TECHNIKS Retention Knob is a CAT50 taper retention knob with a 90° angle and 0.9-inch diameter, identified by manufacturer part number 21005-90. This MAS-standard component is designed for use in CAT50 tooling systems.

Frequently Asked Questions

What is a TECHNIKS CAT50 retention knob used for?

A TECHNIKS CAT50 retention knob secures tool holders in CNC machine spindles with a CAT50 taper interface. The 90° angle and 0.9-inch diameter ensure proper drawbar engagement for reliable tool retention during machining operations.

What are the specifications of the TECHNIKS 21005-90 retention knob?

The TECHNIKS 21005-90 is a CAT50 taper retention knob with a 90° angle and 0.9-inch diameter. It meets MAS standards and is designed for CAT50 tooling systems. The manufacturer part number is 21005-90.

Where to buy TECHNIKS retention knobs worldwide?

3G Electric supplies TECHNIKS retention knobs like the 21005-90 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this MAS-standard CAT50 component.

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

Select a retention knob that matches your spindle's taper size (CAT50), angle (commonly 45° or 90°), and diameter. Verify the standard (e.g., MAS) and manufacturer part number. The TECHNIKS 21005-90 is a 90° option for CAT50 systems.

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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