The Bernardo 5C collet chuck for Profi(-center) 700 series is a lathe chuck for professional use available at Krollit, an official Bernardo distributor since 2007.
- Profi 700 BQV
- Profi 700 Top
- Profi 700 Pro
- Proficenter 700 BQV
- Proficenter 70 Top
Who uses the 5C collet chuck for Profi(-center) 700 series and for what
Mechanical workshops and artisan turners use the 5C collet chuck for Profi(-center) 700 series as a clamping accessory on the metal lathe, ensuring secure clamping and centering of the workpiece during turning, drilling, and grooving operations.
Its place in the Bernardo range
The Bernardo 5C collet chuck for Profi(-center) 700 series 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 5C collet chuck for Profi(-center) 700 series for
The 5C collet chuck for Profi(-center) 700 series is recommended for the following professional profiles:
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Mechanical workshops and artisan turners: secure clamping of round or hexagonal workpieces on a metal lathe 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 spindle nose conforming to DIN 55029.
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Irregular or non-round workpieces: for asymmetrically centered workpieces, consider 4-jaw independent chucks or universal platforms.
Frequently Asked Questions
What type of mounting does the 5C collet chuck for Profi(-center) 700 series have?
Check the indicated mounting (typically A2-5, A2-6, A2-8 according to DIN 55029) in the title or specifications.
The A2 flange mount is the standard for Bernardo Profi and Hobby range lathes. The number (5, 6, 8) indicates the flange size, which must match the lathe's headstock.
How many jaws does it have and are they reversible?
Standard self-centering chucks have 3 jaws; typically supplied with 1 set of internal and 1 set of external reversible jaws plus a tightening key.
3-jaw chucks are suitable for round or hexagonal workpieces. For square or irregular workpieces, consider 4-jaw independent chucks. Soft jaws can be machined on a lathe for special applications.
What is the maximum rotational speed?
See "Max speed" in the technical table: typically 2,500-3,500 rpm for chucks up to Ø 200 mm.
Maximum speed decreases with diameter. Large chucks (Ø 400+ mm) typically have limits of 1,500-2,000 rpm. Exceeding the maximum speed risks the jaws detaching.
What concentricity precision does it offer?
Professional Bernardo chucks comply with DIN 8386 class with typical concentricity of 0.03-0.04 mm.
Concentricity is critical for precision finishes. For high-precision machining (microns), higher class chucks or dedicated clamping collets are needed.
How is it mounted on the lathe?
The chuck mounts directly to the headstock flange via a camlock for A2 systems.
The Camlock system allows quick mounting without an additional adapter flange. For lathes with a threaded spindle nose, a dedicated adapter flange is required. Krollit supplies compatible flanges separately.
