BF20 Mill Belt Drive Conversion Kit

Quiet, Smooth & High-Performance Belt Drive Upgrade

Precision belt drive conversion kit designed for BF20 model milling machines. Replaces the original gear-driven system to reduce noise, vibration, and mechanical wear while improving reliability and spindle performance.

This product version is intended for BF20 models with short spindle extensions.

Key Features

• Carefully selected belt type and optimized pulley belt contact surface.

• Fully handmade, custom manufacturing.

• Manufactured to order for BF20 model mills from various brands.

• Long-term technical support.

• Proven design with extensive customer experience.

• Precision-machined aluminum pulleys.

• Pulley diameters can be manufactured to achieve different motor-to-spindle reduction ratios upon request.

• Standard reduction ratio for this product: 1 : 4.

• RPM display continues to function after conversion.

• Special polyurethane V-belt optimized for small pulley diameters.

• Minimal flex resistance, minimal power loss, and extended belt life.

• Cloth-coated or rubber belts are not suitable for small pulleys and are therefore not used.

Compatibility – Please Read Carefully

This belt drive conversion kit is compatible with BF20 mills that meet the following standard specifications:

• Motor mounting hole pattern: 52 mm center-to-center, square layout.

• Motor shaft diameter: 10 mm.

• Motor shaft keyway: 4 mm.

Critical compatibility measurements on the mill body are clearly marked in the product images.

Please review the images carefully before ordering.

If your machine uses different dimensions, the kit can be manufactured to suit your mill.

Please contact me with the correct measurements for compatibility confirmation.

Customization Notice

BF20 mills are produced by multiple manufacturers, and mechanical dimensions may vary between machines.

Custom-compatible kits can be manufactured when accurate measurements are provided in advance.

Package Contents

• Precision-machined aluminum pulleys.

• Polyurethane V-belt.

• Custom mounting components.

• Required mounting bolts.

• Assemby instructions.

Electric motor, milling machine, and tools are not included.

Shipping Information

• Expedited international shipping via DHL, UPS, or FedEx Express.

• Typical transit time after dispatch: 3–5 business days worldwide.

If no shipping option appears for your country, please contact me.

Technical Note

This product consists solely of mechanical power transmission components intended to replace a gear-driven system with a belt-driven solution.

It does not include electric motors, electronic controls, or complete machine assemblies.