Extension Spring for Bernardo and Holzprofi Planer Thicknessers

This extension spring is a genuine replacement part designed for several Bernardo and Holzprofi planer thicknessers. It provides the required tension and return force for the associated mechanism, ensuring smooth and reliable machine operation.

The spring features an outside diameter of 16 mm, is manufactured from 2 mm diameter spring wire, and has a body length of 47.3 mm with an overall length of 78.6 mm, including the hooks.

Technical Specifications

• Type: Extension spring
• Outside diameter: Ø16 mm
• Wire diameter: Ø2 mm
• Body length: 47.3 mm
• Overall length: 78.6 mm
• Exploded diagram reference: Part No. 336
• Genuine replacement spare part

Compatible Machines

This extension spring is compatible with the following machines:

• Bernardo AD260
• Bernardo AD260S
• Bernardo AD310
• Bernardo AD310S
• Bernardo AD410
• Bernardo AD410S
• Bernardo FS310P
• Bernardo FS310PS
• Holzprofi DR250
• Holzprofi DR310

When Should This Spring Be Replaced?

This extension spring should be replaced if it is broken, stretched, corroded or has lost its original tension. A worn spring can lead to poor return action, incorrect operation of the mechanism and reduced machine performance.

Installation Advice

Before installing the new spring, inspect the hooks, mounting points and moving components for wear or damage. Excessive wear or misalignment may significantly reduce the service life of the new spring.

Always disconnect the machine from the power supply before carrying out maintenance. Handle the spring carefully during installation, as extension springs are under considerable tension.

IMPORTANT: BEFORE ORDERING, PLEASE CHECK THE LIST OF COMPATIBLE MACHINES FOR THIS PART, AS DIFFERENCES MAY EXIST DEPENDING ON THE MONTH AND YEAR OF MANUFACTURE AS WELL AS THE MACHINE SERIAL NUMBER.