Claw coupling fi 6/8 CNC aluminum backlash-freeDiameter: 25mm; Length: 32mmThe coupling consists of two hubs and a flexible coupling.Internal dimension of hub 1; fi 6 mm are made in H7 classInternal dimension of hub 2; fi 8 mm are made in H7 class. Precision backlash-free claw couplings for connecting drive screws to stepper motors, servos, encoders. Used in CNC machine drives.Backlash-free operation as a result of pre-compression of the coupling. Attached coupling hub is on the clamp. The hubs have a cut made, tightening the allen screw to clamp the hub.Couplings - is characterized by:small dimensions, light weight, low moment of inertia, large transmitted torque.