Bernardo Combined Quick-Change Drill Chuck CM 3 / 22 mm is a professional-grade machine tool accessory available from Krollit, an official Bernardo distributor since 2007.
- Holder: Chuck diameter
- MK 3: 22 mm
Who uses the Combined Quick-Change Drill Chuck CM 3 / 22 mm and for what
Users who own a compatible machine install the Combined Quick-Change Drill Chuck CM 3 / 22 mm as an original accessory to extend functionalities or replace worn components.
Its place in the Bernardo range
The Bernardo Combined Quick-Change Drill Chuck CM 3 / 22 mm is part of Bernardo's range of machine tool accessories, distributed in Italy by Krollit since 2007. The Bernardo range includes models of various categories and performances: to choose the right machine for your use case, you can consult the Bernardo catalog on Krollit or contact customer support for selection assistance.
Krollit logistics and support
Shipping in 3-5 business days from Krollit warehouse for spare parts and accessories. Customer support in Italian available for technical documentation and compatibility verification with the reference machine. Krollit has been an official distributor since 2007.
Who is the Combined Quick-Change Drill Chuck CM 3 / 22 mm for?
The combined quick-change drill chuck CM 3 / 22 mm is recommended for the following professional profiles:
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Users who own a compatible machine: original accessory to extend the functionalities of the indicated machine.
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Workshops with specific setup needs: component for special processing or increased precision.
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Compatibility with machines of other brands or models: check machine model and specifications before purchase.
Frequently Asked Questions
What is a Morse Taper 3 (MT 3) combined quick-change drill chuck?
It is a quick-change chuck that combines the drill bit holder and the coupling taper in a single body, mountable directly into the machine's spindle nose.
The "combined quick-change" system eliminates the need for a separate tang, reducing the number of components and the risk of misalignment. Suitable for series production and quick bit changes.
Which machine is it mounted on?
It mounts directly on the spindle nose with a Morse Taper 3 (MT 3) connection.
Morse Taper 2 (MT 2) is typical of bench drills, MT 3 of professional drills, MT 4 of industrial drills. ISO 30 and ISO 40 are connections for precision bench milling machines.
What is its drilling capacity? 22 mm
Clamping capacity up to Ø 22 mm on the drill bit shank.
The capacity indicates the maximum diameter of the drill bit shank that the chuck can accommodate. For larger diameter holes, specific core drills or milling cutters are needed.
Is it key-tightened or keyless?
Combined quick-change chucks are tightened with the provided chuck key, ensuring secure clamping for intensive use.
Key tightening is safer than keyless tightening for operations with high torque or hard materials. The key must be kept near the machine and never left in the chuck during operation.
How is it maintained?
Regular cleaning of the jaws after use, removal of chips and coolant, lubrication with specific chuck oil every 50-100 hours of use.
A jaw that moves with difficulty indicates accumulation of chips or oxidation. Disassemble the chuck, clean the sliding surfaces, and apply light oil. Replace the chuck if runout exceeds 0.1 mm.
