- 1st and 2nd operations on same lathe w22-t4 - complete drilling on vertical drilling center dwn-22v. the cycle can be carried-out only when the lathe is equipped with pallet loading system. production capability is inf......- 1st and 2nd operations on same lathe w22-t4 - complete drilling on vertical drilling center dwn-22v. the cycle can be carried-out only when the lathe is equipped with pallet loading system. production capability is influenced by the lathes ability to machine 1st and 2nd turning operations in sequence of one another on a continuous basis. as indicated in the machining cycle below, the theoretical production capability for the machining of a 15"x7" wheel is about 33 pcs./hour.