1. Drilling efficiency:

SWZ1250: spindle rotation speed 400rpm, drilling hole φ20mm, needs 35s.

SWZ1250(A): spindle rotation speed 1100rpm, drilling hole φ20mm, needs 11s.

2. Capacity:

SWZ1250: spindle rotation speed 400rpm, 8h shift, output 22000kgs(13pcs).

SWZ1250(A): spindle rotation speed 1100rpm, 8h shift, output 74000kgs(38pcs).