Type-C improved has been improved on Type-C punching machine basis, the details of improvement as follows:

1.Alloy copper sleeve is been mounted the end of crankshaft which avoid the frication of frame, the copper is born with the function of frication and transmission heat,
which can transmit the heat from machine operation and decrease the inaccuracy .

2.Type-C improved has been adopted double-balance system on Type-C basis,which make the frame more steady when the machine operate.

3.In order to safeguard operator from hurt, we add the safe-door to the machine that can upgrede the C-support of frame and make the machine stable.