The Bernardo M70 Lathe Chuck Back Plate Ring is a professional-grade lathe chuck available at Krollit, an official Bernardo distributor since 2007.
- Compatibility: M70 Chuck
- Scope of Use: Professional and advanced hobbyist
- Material: High-strength metal
Who uses the M70 Lathe Chuck Back Plate Ring and for what purpose
Mechanical workshops and artisan turners use the M70 Lathe Chuck Back Plate Ring as a clamping accessory on metal lathes, ensuring secure clamping and centering of the workpiece during turning, drilling, and grooving operations.
Its place in the Bernardo range
The Bernardo M70 Lathe Chuck Back Plate Ring is part of Bernardo's range of lathe chucks, distributed in Italy by Krollit since 2007. The Bernardo range includes models of various categories and performance levels: to choose the right machine for your use case, you can consult the Bernardo catalog on Krollit or contact customer support for assistance with selection.
Krollit logistics and support
Shipping of spare parts and accessories within 3-5 business days from Krollit warehouse. 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 M70 Lathe Chuck Back Plate Ring for?
The M70 Lathe Chuck Back Plate Ring 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 during 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 A2 mount compliant with DIN 55029.
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Irregular or non-round workpieces: for workpieces not symmetrically centered, consider independent 4-jaw chucks or universal faceplates.
Frequently asked questions
When should I use this chuck?
It is a self-centering chuck for clamping workpieces on the lathe during turning operations.
Self-centering chucks allow for quick 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 material 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 the intensity of use and the required tolerance: steel for production and precision, cast iron for general use.
Which diameter should I choose?
The choice of diameter depends on the lathe spindle nose (it must match the mounting) and the size 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 mount M-) and the corresponding diameter.
On modern lathes, Camlock mounting is the most common. Older lathes may have a threaded (M-) or flanged mount. The technical documentation of the lathe indicates the exact type.
How is the chuck's precision maintained?
Regular cleaning of the scroll 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.
