... coolong system 3 Burr free,no duety. Hydraulic pressure Vertical slide Metal circular saw machine 1 Air operated,the hydrauic pressure ... feed,the chucking automatic installment,the movement is steady,the operation is simple,the labor intensity is low,highly effective.2 ... ,275,300,315300,315,350350,400,455 Hydraulic pressure Vertical slide Metal circular saw machine