手工泵一般用于切割∅42mm以下链条，∅48mm以上链条切割宜采用增压器或者液压链条切割锯。

Lever pump for hydraulic cutter

Lever pump usually supply the power to cut the chain with diameter equal or smaller than ∅42mm.

Chains with diameter equal or above ∅48mm usually cut by hydraulic saw or supercharger.