The Bernardo 3-jaw cast iron chuck DK11-80 is a professional lathe chuck, weighing 1.9 kg. Krollit, official Bernardo distributor since 2007.
- D - Chuck size: 80
- D1: 56 mm
- D2: 67 mm
- D3: 16 mm
- h: 66.5 mm
- H1: 50 mm
Who uses the DK11-80 3-jaw cast iron chuck and for what
Mechanical workshops and artisan turners use the DK11-80 3-jaw cast iron 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 3-jaw cast iron chuck DK11-80 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 machine suitable 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. Italian-speaking customer support available for technical documentation and compatibility verification with the reference machine. Krollit has been an official distributor since 2007.
Who is the DK11-80 3-jaw cast iron chuck for
The dk11-80 3-jaw cast iron 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 during turning, drilling, and grooving operations.
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Users with a compatible flange Bernardo lathe: original replacement or upgrade for lathes in the Bernardo range (Profi, Hobby, etc.) with an A2 DIN 55029 compliant mount.
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Irregular or non-round shaped workpieces: for non-symmetrically centered workpieces, consider 4-jaw independent chucks or universal platforms.
Technical specifications
| D1 |
56 mm |
| D2 |
67 mm |
| D3 |
16 mm |
| h |
66.5 mm |
| H1 |
50 mm |
| h |
4 mm |
| Mounting screws |
3 x M6 |
| D - Chuck size |
80 |
| Max speed |
4000 rpm |
| Approx. weight |
1.9 kg |
Frequently asked questions
When to use a 3-jaw chuck?
Self-centering 3-jaw chucks are for cylindrical, hexagonal, and 3-6-9-12 sided workpieces. The jaws move together with a single key (self-centering).
It is the most common chuck on lathes: quick clamping of symmetrical workpieces, typical concentricity precision of 0.03-0.1 mm depending on the body material (steel = better precision, cast iron = standard).
Why a cast iron chuck?
Cast iron chucks (DK Camlock or PS series) offer excellent heat dissipation and a robust structure at a lower cost than steel.
Cast iron: typical concentricity precision 0.03-0.1 mm. The DK Camlock series has a quick-change mount, the PS is the basic model. High service life in standard machining operations.
What workpieces is the Ø 80 mm diameter suitable for?
Suitable for small workpieces (max Ø ~80 mm): hobby and precision lathes.
The nominal diameter of the chuck 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 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 a threaded (M-) or flanged mount. The lathe's technical documentation indicates the exact type.
How is the chuck's 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.
