● Site na ọrụ ngbanwe elu servo die, yana ọrụ ebe nchekwa dị elu, belata oge mgbanwe ebu ma melite arụmọrụ mmepụta.
● N'onwe ya na-amanye counterbalance, belata nchụpụ nke anwụ elu n'ihi nastamping ọsọ mgbanwe, ma belata mgbapụ ebe nwụrụ anwụ nke mbụ stampụ na nke abụọ stampụ.
● Usoro nguzozi anabatara iji dozie ike akụkụ nke ọ bụla, nhazi ya bụ ntụzịaka nke nwere akụkụ asatọ, na-emeziwanye ikike ibu eccentric nke ihe mmịfe ahụ.