... .1.Features Of BF1 Clamp Type Flexible coupling with curved Jaw: * Coupling assembled by pressing a polyurethane sleeve ... sides. * Absorption of parallel, angular misalignments and shaft end-play by spring action. * Resistance to oil and electrical ... indicate)M: The hole dia. of the encoder end.Φ4,Φ5,Φ6,Φ6.35,Φ8,Φ10,Φ12,Φ15,Φ ... 25, Φ30mmN: the hole dia.of the user end.Φ4,Φ5,Φ6,Φ6.35,Φ8,Φ10,Φ12,Φ15,Φ ...