Before installing a new rope the sheave grooves, layers and lubrication should be checked.

Measure the groove diameter with a radius gauge and check the general condition of the groove.

Groove diameter shall be nominal rope diameter +8% to +14% (0,54 x d to 0,57 x d).

WARNING! Worn sheaves should be replaced/refurbished.

Sheave groove correctthe rope has maximal contact surface.
Sheave groove too narrow
                  wires and strands in the rope deformed, which means short life of the rope.
Sheave groove too wide
                  rope has bad support, risk for deform of the rope and damages in the groove profile.