Derk V- belt taper bush pulley are manufactured according to ISO-4183. The groove profile designed for both classical V-Belts (section Z,A,B,C) and narrow V-Belts (section SPZ,SPA,SPB,SPC) as stated in technical dimentional tables. The material used for the pulley is close grain structure cast iron.

When ordering a pulley to be dynamically balanced you must specify the pulley operational speed.