Availability

G0704 / BF20 - Dual Ratio Belt Drive

Deluxe Dual ratio belt drive kit for all BF20 / G0704 machines. Removes quill drive and uses direct spindle mounting. Advanced features

Size of the spindle diameter - across the splines

Diameter of the motor shaft

Provisions for adding trial weights, enabling precision balancing to be carried out.

$349.90

This kit gives you the ability to swap between High Torque or High Speed - depending on the job.  After some practice, swap between ratios in under 30 seconds.

With the stock G0704 motor (14mm shaft), you'll see  2400 Low /4800 H (based on 3600RPM motor speed). With the BF20 Vario, you'll see 3750 Low / 7450 High (based on 5600rpm motor).  If you upgrade to the recommended BLDC motor, you'll see 4000 / 8000 RPM.  The kit is compatible with BOTH motors! (no additional parts needed).

Provisions for balancing weights can be added for a fee (this does not mean the pulleys are balanced). M4 holes tapped at 10 degree intervals.

Features:

  • Black Anodised finish as standard
  • Low Speed -  Motor Speed x0.67 Reduction / High Speed = x1.33 Increase
  • Tool-Less Quick swap between ratios (levered handles)
  • "Nude" design - gets rid of the quill for better speed & balance at high speed 

Recommended bearing arrangement is Taper Roller top (32005 - stock bearing), 7007 Angular Contact + Spacer bottom (supplied separately).

* You'll need to supply your spindle shaft diameter, across the splines.

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