MAGNETIC CLUTCHES, COUPLINGS
The S90MCC series of magnetic clutches and couplings from Sterling Instrument are said to feature no friction or wearing parts, use no electricity and have no magnetic particles to leak. The units are stocked in 3 different hollow bore sizes: .625, .750 and .875 in.
The torque range is from 3 to 70 lb in. and weight is 14.2 lb.