The Bernardo FL-125/D4 spindle flange is a machine tool accessory for professional use available on Krollit, an official Bernardo distributor since 2007.
- Flange dimensions: 125/D4
- Diameter: 125 mm
- Taper: 4
- A: 127 mm
- B: 28 mm
- Passage: 61 mm
Who uses the FL-125/D4 Spindle Flange and for what
Users who own a compatible machine install the FL-125/D4 Spindle Flange as an original accessory to extend functionality or replace worn components.
Its place in the Bernardo range
The Bernardo FL-125/D4 spindle flange is part of the Bernardo machine tool accessory 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 selection assistance.
Krollit logistics and support
Shipping within 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 FL-125/D4 Spindle Flange for?
The FL-125/D4 spindle flange is recommended for the following professional profiles:
-
Users who own a compatible machine: original accessory to extend the functionality of the indicated machine.
-
Workshops with specific setup needs: component for particular machining operations or increased precision.
-
Compatibility with machines of other brands or models: verify machine model and specifications before purchase.
Technical specifications
| Flange dimensions |
125/D4 |
| Diameter |
125 mm |
| Taper |
4 |
| A |
127 mm |
| B |
28 mm |
| Passage |
61 mm |
Frequently asked questions
What is the FL 125 - D4 spindle flange used for?
It is a flange for mounting the chuck on metal lathes, with a diameter of Ø 125 mm and D4 mounting.
It allows the secure fastening of the chuck to the lathe spindle nose according to FL standards (DIN 55029 external flange mounting). The Ø 125 mm diameter corresponds to the nominal diameter of the compatible chuck.
What is the difference between FL and FLD series?
The FL (Ø flange) has an external mounting according to DIN 55029. The FLD has a central drawbar mounting according to DIN 55027 (quicker to disassemble).
This model is FL: for maximum compatibility with the lathe, check the standard of the spindle nose. Most professional Bernardo metal lathes use the FL attachment.
What does D4 mounting indicate?
The D4 code (Camlock) indicates the quick-release system: the number (e.g., D3, D4, D5, D6, D8, D11, D15) identifies the standard mounting size.
For correct compatibility, check the mounting of your lathe: D3-D5 for small/medium lathes, D6-D8 for medium-large lathes, D11-D15 for heavy industrial lathes.
Is it an original Bernardo spare part?
Yes, Krollit has been an official Bernardo distributor since 2007 and exclusively supplies original flanges for Bernardo lathes and DIN compatible ones.
Original flanges comply with the machining tolerances required by the DIN standard to ensure concentricity and balance of the chuck. Do not use non-original flanges for precision machining.
How is the flange mounted on the lathe?
Mounting requires disassembling the existing chuck, thoroughly cleaning the lathe spindle nose, applying a light layer of oil, and fastening with the torque specified in the manual.
For lathes with a Camlock system (DLD), the cams should be closed by hand until the reference mark (usually a notch or line); do not force with tools. Krollit provides technical documentation and telephone support for mounting.
