Preparation of the shaft is simple. No keyways to machine, no taper and no thrust ring. When mounting the OK coupling, a thin inner sleeve with a tapered outer diameter slides onto the shaft. A thick outer sleeve with a matching tapered inner surface fits onto the inner sleeve. Ordinary mineral oil is then injected between the sleeves.

Coupling systems; Oil injection systems; OK couplings; Products. Coupling systems. Oil injection systems. Product tables + OK couplings; Supergrip bolts; OKTC and OKTH hydraulic rings and propeller nuts; OK couplings. Designs. Power transmission capacity. Shafts. Mounting and dismounting. OK Coupling mounting and dismounting kits.