The R12 Overspeed Governor from PFB is a drop-jaw type governor with a 345mm pulley. This downward operating governor is available in clockwise and anti-clockwise versions, and is suitable for use with 8mm – 10mm rope (please advise rope diameter when ordering).
The R12 governor can accomodate tripping speeds from 1.00m/s – 5.06m/s.