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Bernardo 4-jaw lathe chuck PS4-160
Bernardo 4-jaw lathe chuck PS4-160 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
At Krollit, we guarantee a safe and reliable shipping process. Orders are handled with the utmost care and traceability until delivery.
For international shipments, please send your request via the dedicated contact form.
Upon delivery, always sign the delivery note with the words “subject to inspection” to allow for proper handling of any irregularities or discrepancies in the product.
Our goal is to ensure you receive prompt service and a worry-free shopping experience.
Description
Bernardo 4-jaw chuck PS4-160 is a lathe chuck for professional use, weighing 10 kg. Krollit, official Bernardo distributor since 2007.
- Chuck size A: 160
- B: 64.5 mm
- C: 4 mm
- d: 125 mm
- E: 42 mm
- F: 140 mm
Who uses the PS4-160 4-jaw chuck and for what
Machine shops and artisan turners use the PS4-160 4-jaw chuck as a clamping accessory on metal lathes, ensuring secure clamping and centering of the workpiece in turning, drilling, and grooving operations.
Its place in the Bernardo range
Bernardo 4-jaw chuck PS4-160 is part of the Bernardo lathe chuck range, 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 working days from Krollit warehouse for spare parts and accessories. Italian customer support available for technical documentation and compatibility verification with the reference machine. Krollit has been an official distributor since 2007.
Who is the PS4-160 4-jaw chuck for
The PS4-160 4-jaw chuck is recommended for the following professional profiles:
- Machine shops and artisan turners: secure clamping of round or hexagonal workpieces on metal lathes for turning, drilling, and grooving operations.
- Users with a Bernardo lathe with a compatible flange: original replacement or upgrade for Bernardo range lathes (profi, hobby, etc.) with A2 mount compliant with DIN 55029.
- Irregular or non-round workpieces: for non-symmetrically centered workpieces, consider independent 4-jaw chucks or universal faceplates.
Technical specifications
Technical specifications
| B | 64.5 mm |
| C | 4 mm |
| d | 125 mm |
| E | 42 mm |
| F | 140 mm |
| G | M10 |
| h | 70 mm |
| J | 32 mm |
| Chuck size A | 160 |
| Max. speed | 3000 rpm |
| Approx. weight | 10 kg |
Warranty
Warranty terms and support procedures are available on the dedicated Krollit page.
View Krollit warranty termsFAQ / Frequently asked questions
Frequently Asked Questions
When to use a 4-jaw chuck?
Self-centering 4-jaw chucks are for square and 4-8 sided workpieces. The jaws move together with a single key.
The self-centering 4-jaw chuck (not independent jaws) clamps square or octagonal workpieces symmetrically. For off-center (eccentric, asymmetric) clamping, independent jaw chucks are needed.
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 required tolerance: steel for production and precision, cast iron for general use.
What workpieces is the Ø 160 mm diameter suitable for?
Suitable for small-medium workpieces (max Ø ~140 mm): bench lathes and artisan workshops.
The nominal chuck diameter indicates the maximum body size, not the machinable workpiece size. 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 lathe spindle nose (Camlock D3-D15, or threaded M- mount) and the corresponding diameter.
On modern lathes, the Camlock mount 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 ground bar and measuring with a dial indicator: acceptable tolerance 0.03-0.1 mm depending on the model.
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