To guarantee prompt delivery of our clients, we have equipped a new inner hole grinding machine on Apr 13, 2018. The Brand “Zhengjia” is from Taiwan. Good performances combining with skilled technology of our technicians, tolerances 0.005 and roughness Ra 0.1 can be reached.
Tight tolerances of inner holes are important for assembly with blanking punches. As you know, clearance of stamping depends on dimensions differences between dies and blanking punches. Accurate clearance is essential to stamp metal products with stable dimensions, smooth edges and no burrs.
Any interests for blanking punches and dies, please contact us freely!