Le cinghie per sega circolare
Belts on Rosselli circular saws play a fundamental role in the transmission from the motor to the blade, ensuring power and stability . Often overlooked, they play a crucial role in the motor’s movement. Here’s why they’re important and what advantages they offer:
Why is the belt so important?
- Power Transmission : The belt connects the motor to the blade, ensuring that rotation is smooth and constant.
- Vibration reduction: Acts as a shock absorber between the motor and the blade, improving stability during cutting.
- Engine protection: If the blade jams, the belt can slip, preventing damage to the engine.
- Greater useful cut for the diameter of the wood


Main advantages
- Greater safety : The belt system reduces the risk of sudden breakages compared to direct transmission.
- Engine life : Less mechanical stress thanks to the belt’s ability to absorb shocks and load variations.
- Easy maintenance : Belts are relatively inexpensive and easy to replace.
- Consistent Performance : Maintains stable blade speed, improving cutting quality.
Function of V-belts
- Speed Multiplication : Thanks to the ratio between the pulleys, the belt can increase the speed of the blade in relation to the speed of the engine, optimizing the available power.
- Blade adaptation : The blade diameter and the type of cut (hardwood, softwood, etc.) influence the gear ratio.
Differences between electric saws and cardan saws
- Electric saws :
- They use belts designed for constant high speed .
- Materials resistant to heat and friction, because the electric motor works at high rpm.
- Cardan saws :
- Belts designed for high torque at lower rpm.
- They must withstand load variations typical of the tractor’s mechanical transmission.

Contact Us - Spare Parts
In case of wear or tear, Rosselli has replacement belts available. Contact us on the spare parts page.
Maintenance and checks
- Cleaning : Remove dust and wood debris from the pulleys and belt to prevent slippage.
- Alignment : Check that the belt is well centered on the pulleys.
- Visual inspection : Check the belt for cracks, cuts or signs of wear.
- Correct tension : Make sure the belt is neither too loose nor too tight (incorrect tension reduces life and safety).

