We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

3G Electric
RFQ CartGet a QuoteSign inSign up
TECHNIKS Retention Knob: Coolant Through, CAT40 Taper, 45° - Coolant-Through CAT Retention Knobs
TECHNIKSCoolant-Through CAT Retention Knobs

TECHNIKS Retention Knob: Coolant Through, CAT40 Taper, 45°

The TECHNIKS Retention Knob (MPN 21003-45C) is a coolant-through CAT retention knob designed for CAT40 taper tooling. It features a 45° angle and a 0.59-inch diameter, manufactured to ISO standards. This component…

SKU 3G-OTH-270929

Brand
TECHNIKS
Item
Retention Knob: Coolant Through, CAT40 Taper, 45°
Category
Coolant-Through 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
21003-45C
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 (MPN 21003-45C) is a coolant-through CAT retention knob designed for CAT40 taper tooling. It features a 45° angle and a 0.59-inch diameter, manufactured to ISO standards. This component enables coolant delivery through the tool holder for improved machining operations.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the TECHNIKS Retention Knob 21003-45C used for?

The TECHNIKS Retention Knob 21003-45C is used in CNC machining centers with CAT40 taper tooling to secure the tool holder in the spindle. Its coolant-through design allows cutting fluid to pass through the knob and tool holder, improving chip evacuation and cooling during high-speed machining operations.

What are the specifications of the TECHNIKS Retention Knob 21003-45C?

The TECHNIKS Retention Knob 21003-45C has a CAT40 taper, a 45° angle, and a 0.59-inch diameter. It is manufactured to ISO standards and features a coolant-through design. The manufacturer part number is 21003-45C, and it is made by TECHNIKS.

Where to buy the TECHNIKS Retention Knob 21003-45C worldwide?

You can source the TECHNIKS Retention Knob 21003-45C 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.

How to install a coolant-through CAT40 retention knob?

To install a coolant-through CAT40 retention knob like the TECHNIKS 21003-45C, first clean the spindle and tool holder taper. Apply light oil to the knob threads, then torque it to the manufacturer's recommended specification using a retention knob tool. Ensure the coolant passages align properly for unrestricted flow.

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 coolant-through 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: Coolant Through, CAT50 Taper, 45°, 0.9 in Dia (MPN 21005-45C). Key specifications — attr1033406: TECHNIKS; attr1036358: ISO.
TECHNIKS
TECHNIKS Retention Knob: Coolant Through, CAT50 Taper, 45°, 0.9 in Dia (MPN 21005-45C). Key specifications — attr1033406: TECHNIKS; attr1036358: ISO.
TECHNIKS Retention Knob: Coolant Through, CAT50 Taper, 90°, 0.9 in Dia (MPN 21005-90C). Key specifications — attr1033406: TECHNIKS; attr1036358: ISO.
TECHNIKS
TECHNIKS Retention Knob: Coolant Through, CAT50 Taper, 90°, 0.9 in Dia (MPN 21005-90C). Key specifications — attr1033406: TECHNIKS; attr1036358: ISO.
TECHNIKS Retention Knob: Coolant Through, CAT40 Taper, 45°, 0.59 in Dia (MPN 21003-45CSF). Key specifications — attr1033406: TECHNIKS; attr1036358: MAS.
TECHNIKS
TECHNIKS Retention Knob: Coolant Through, CAT40 Taper, 45°, 0.59 in Dia (MPN 21003-45CSF). Key specifications — attr1033406: TECHNIKS; attr1036358: MAS.
TECHNIKS Retention Knob: Coolant Through, CAT40 Taper, 60°, 0.59 in Dia (MPN 21003-60C). Key specifications — attr1033406: TECHNIKS.
TECHNIKS
TECHNIKS Retention Knob: Coolant Through, CAT40 Taper, 60°, 0.59 in Dia (MPN 21003-60C). Key specifications — attr1033406: TECHNIKS.

More from TECHNIKS

View all TECHNIKS parts →
TECHNIKS Retention Knob: Coolant Through, CAT50 Taper, 60°, 0.9 in Dia (MPN 21005-60C). Key specifications — attr1033406: TECHNIKS; attr1036358: ISO.
TECHNIKS
TECHNIKS Retention Knob: Coolant Through, CAT50 Taper, 60°, 0.9 in Dia (MPN 21005-60C). Key specifications — attr1033406: TECHNIKS; attr1036358: ISO.
TECHNIKS
TECHNIKS
TECHNIKS Retention Knob: Coolant Through, CAT40 Taper, 15°, 0.75 in Dia (MPN 21006-15C). Key specifications — attr1033406: TECHNIKS; attr1036358: DIN.
TECHNIKS Retention Knob: Coolant Through, CAT40 Taper, 90°, 0.59 in Dia (MPN 21003-90CSF). Key specifications — attr1033406: TECHNIKS; attr1036358: MAS.
TECHNIKS
TECHNIKS Retention Knob: Coolant Through, CAT40 Taper, 90°, 0.59 in Dia (MPN 21003-90CSF). Key specifications — attr1033406: TECHNIKS; attr1036358: MAS.
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.
TECHNIKS Retention Knob: Coolant Through, CAT40 Taper, 90°, 0.59 in Dia (MPN 21003-90C). Key specifications — attr1033406: TECHNIKS.
TECHNIKS
TECHNIKS Retention Knob: Coolant Through, CAT40 Taper, 90°, 0.59 in Dia (MPN 21003-90C). Key specifications — attr1033406: TECHNIKS.
TECHNIKS Retention Knob: Coolant Through, CAT40 Taper, 45°, 0.74 in Dia (MPN 17836). Key specifications — attr1033406: TECHNIKS; attr1036358: ANSI.
TECHNIKS
TECHNIKS Retention Knob: Coolant Through, CAT40 Taper, 45°, 0.74 in Dia (MPN 17836). Key specifications — attr1033406: TECHNIKS; attr1036358: ANSI.
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, 60°, 0.59 in Dia (MPN 21003-60CSF). Key specifications — attr1033406: TECHNIKS; attr1036358: MAS.
TECHNIKS
TECHNIKS Retention Knob: Coolant Through, CAT40 Taper, 60°, 0.59 in Dia (MPN 21003-60CSF). Key specifications — attr1033406: TECHNIKS; attr1036358: MAS.