● Constant clamping force by the Servo hydraulic cylinder, no slippage during the test ● High precision load cell for force measuring ● Photoelectric encoder for measuring the displacement of punching head ● High control accuracy and fast response to stop the punching head instantly ● Dual servo systems (punching & constant clamping force) integrated in one machine ● High automation: After setting the test parameter, the testing can be done with onclick.
Model: GBW Series Description: GBW series Erichsen Cupping Testing Machine is designed on the basis of screw universal material testing machine. The Erichsen Cupping Tester is suitable for cupping test of metal sheet and strip steel rolled stock etc to evaluate the plastic deformation performance and ductility. The cupping test for metal sheet thickness range is 0.1mm to 5mm, Max. punching capacity is 300KN, and the pre-tightening device is optional either with hydraulic servo loading pump or manual loading pump.