Bernardo Lathe Chuck Stepped Jaws
Bernardo Lathe Chuck Stepped Jaws is backordered and will ship as soon as it is back in stock.
available within 2-3 months
Subscribe to our newsletter
Get the latest updates on all our new collections, sales, offers and product arrival dates.
-
Description
-
Product safety
-
Reviews
Description
The Bernardo stepped jaw chuck is a professional lathe chuck available from Krollit, an official Bernardo distributor since 2007.
- Compatibility: M70 chuck
- Intended use: Professional and advanced hobbyist
- Material: High-strength metal
Who uses the stepped jaw chuck and for what
Mechanical workshops and artisan turners use the stepped jaw chuck 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 stepped jaw chuck 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 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 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 the stepped jaw chuck is for
The stepped jaw chuck is recommended for the following professional profiles:
- Mechanical workshops and artisan turners: secure clamping of round or hexagonal workpieces on metal lathes during turning, drilling, and grooving operations.
- Users with a compatible flanged Bernardo lathe: original replacement or upgrade for lathes in the Bernardo range (Profi, Hobby, etc.) with A2 mounting conforming to DIN 55029.
- Irregular or non-round workpieces: for asymmetrically centered workpieces, consider 4-jaw independent chucks or universal faceplates.
Frequently Asked Questions
When to use this chuck?
It is a self-centering chuck for clamping workpieces on a lathe during turning operations.
Self-centering chucks allow for quick clamping of the workpiece with a single wrench. 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 usage intensity 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- mounting) and the corresponding diameter.
On modern lathes, Camlock mounting is the most common. Older lathes may have threaded (M-) or flanged mounting. The lathe's technical documentation indicates the exact type.
How is chuck precision maintained?
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.
