The Optibelt KS V-grooved pulley for taper bushings profile SPA 13 TB SPA 280/100ZA and is balanced in one plane. Balancing is carried out minus the key on a smooth mandrel. Machines where the rotors are balanced with an adjusting spring inserted in the shaft end must be ordered as “Balanced with finished bore without key on a smooth mandrel without inserted spring". Datum diameter is 280 mm
Number of grooves are 1
Cast iron pulley