Replacement 12 VDC electric clutch. Used for double v-belt applications withthe 326-9110-052 pump and other pumps with the tapered and keyed shafts. Compatible with Force America Products.NOTE TO INSTALLERBURNISHING: Clutches will need a short burnishing period to generate the ratedtorque. This is a process of cycling the clutch to slightly wear the frictionsurfaces. This allows full contact and maximum magnetic attraction required forrated torque (or more).TO AVOID BURNING OR HEAT DISTORTION, THE FOLLOWINGPROCEDURE IS RECOMMENDED: After clutch is installed, run at 1000-1200 RPM.Cycle the clutch on/off at the rate of 1 seconds on – 1 seconds off for aminimum of 30-40 cycles. Bolt hole center to center: 4 1/2″ x 3 5/16″ 7″ diameter heavy duty electric clutch 7/8″ Tapered Shaft 3/16″ Keyway 95′ Pound Torque Used for double v-belt applications Fits the tapered, keyed pump shaft