The Bernardo Rack and Pinion Chuck for Hobby 140 Lathe is a professional lathe chuck available from Krollit, an official Bernardo distributor since 2007.
- Original Bernardo accessory, designed and certified for the Hobby 140 lathe
- Mount compatible with the Hobby 140 Lathe's tailstock via CM2 Morse taper
- Mount type: CM2 Morse taper
- Compatibility: Bernardo Hobby 140 Lathe
- Material: Steel
- Item code: 03-1537
Who uses the Rack and Pinion Chuck for Hobby 140 Lathe and for what
Mechanical workshops and artisan turners use the Rack and Pinion Chuck for Hobby 140 Lathe as a clamping accessory on metal lathes, ensuring secure locking and centering of the workpiece during turning, drilling, and grooving operations.
Its place in the Bernardo range
The Bernardo Rack and Pinion Chuck for Hobby 140 Lathe is part of the Bernardo lathe chuck range, 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 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 Rack and Pinion Chuck for Hobby 140 Lathe for
The rack and pinion chuck for the Hobby 140 lathe 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 a compatible flange: original replacement or upgrade for Bernardo range lathes (profi, hobby, etc.) with A2 mount according to DIN 55029.
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Irregular or non-round workpieces: for non-symmetrically centered workpieces, consider independent 4-jaw chucks or universal platforms.
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 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 intensity of use and required tolerance: steel for production and precision, cast iron for general use.
For which workpieces is the Ø 140 mm diameter suitable?
Suitable for small to medium workpieces (max Ø ~140 mm): bench lathes and artisan workshops.
The nominal diameter of the chuck indicates the maximum size of the body, not the machinable workpiece. The clamping capacity depends on the jaw opening (typically 60-70% of the nominal Ø).
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. On older lathes, there may be a threaded (M-) or flanged mount. 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 rectified bar and measuring with a dial indicator: acceptable tolerance 0.03-0.1 mm depending on the model.
