The elevator traction sheave 605-3-12 S is a lift sheave pulley made for Sigma-type elevator drive systems. It has a 605 mm diameter, three rope grooves and is designed to work with 12 mm steel core elevator wire rope. This elevator traction wheel transfers the motor's turning force to the wire rope using friction, so the lift car travels smoothly between floors.
Using the right sheave size keeps the rope properly seated in each groove, which reduces uneven wear and helps the lift run safely. Choosing the correct traction sheave also supports even rope tension and longer service life for the whole drive system.
