Bernardo Aluminum case for M70 chuck is a professional lathe chuck available from Krollit, official Bernardo distributor since 2007.
- Compatibility: M70 chuck and jaws
- Scope of use: Professional and advanced hobbyist
- Material: Aluminum
- Handle: Yes, integrated
Who uses the Aluminum case for M70 chuck and for what
Mechanical workshops and artisan turners use the Aluminum case for M70 chuck as a clamping accessory on metal lathes, ensuring secure locking and centering of the workpiece in turning, drilling, and grooving operations.
Its place in the Bernardo range
Bernardo Aluminum case for M70 chuck is part of the Bernardo range of lathe chucks, distributed in Italy by Krollit since 2007. The Bernardo range includes models of various categories and performance: 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 3-5 working 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 Aluminum case for M70 chuck for
The aluminum case for M70 chuck is recommended for the following professional profiles:
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Mechanical workshops and artisan turners: secure clamping of round or hexagonal workpieces on metal lathes in turning, drilling, and grooving operations.
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Users with a Bernardo lathe with compatible flange: original replacement or upgrade for Bernardo range lathes (profi, hobby, etc.) with DIN 55029 compliant A2 mount.
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Irregular or non-round workpieces: for asymmetrically uncentered workpieces, consider 4-jaw independent chucks or universal platforms.
Frequently asked questions
When to use this chuck?
It is a self-centering chuck for clamping workpieces on the lathe during turning operations.
Self-centering chucks allow rapid clamping of the workpiece with a single key. The choice depends on the shape of the workpiece (cylindrical, square) and the body material (steel or cast iron).
What is the chuck body made of?
The material is indicated in the title: steel (PO series) for maximum precision, cast iron (DK/PS series) for standard use.
The choice depends on intensity of use and required tolerance: steel for production and precision, cast iron for general use.
Which diameter to choose?
The choice of diameter depends on the lathe spindle nose (it must match the mounting) and the dimensions of the workpieces to be machined.
Typical diameters: 80-160 mm for hobby lathes, 200-315 mm for professional lathes, 400-630 mm for industrial lathes.
How do I check compatibility with my lathe?
Check the type of mounting on the lathe spindle nose (Camlock D3-D15, or threaded M- mount) and the corresponding diameter.
On modern lathes, Camlock mounting is the most common. Older lathes may have threaded (M-) or flanged mounts. The lathe's technical documentation indicates the exact type.
How do you maintain chuck precision?
Regular cleaning of the spiral mechanism, periodic lubrication with specific chuck grease, concentricity check every 6 months with a dial indicator.
A jaw that moves with difficulty indicates chips or rust in the mechanism: disassemble, clean, and grease. Concentricity is checked by mounting a ground bar and measuring with a dial indicator: acceptable tolerance 0.03-0.1 mm depending on the model.
