Draftguard® Anti-Rotation Device

Fan drives can rotate backwards when they are turned off, generally from air movement across the blades. Draftguard anti-rotation device secures the drive from spinning backwards during maintenance operations as well as protects the entire system from extreme shock loads during start-up, causing unnecessary wear of the motor components.

Ideal for any V-belt or synchronous belt drive where back-drafting or wind-milling is an issue or safety concern.


  • Designed with mounting holes for bushings including QD® (E, F and J) and Taper-Lock® (3020, 3525, 3535, 4030) commonly found on ACHE belt drive systems.

  • Maintenance-free bearings greased-for-life assembly.

  • Small investment to mitigate risk to employees and equipment.

Details shown which do not affect drive function or overall weight may be changed without notification.

Gates Power Transmission Preventive Maintenance Manual