;¨®ZHONGDE vacuum pump(made in china) and technical paramenters. ;¨®impoted BUSCH vacuum pump and technical paramenters. stronger spring ;¨®special designed edge of vacuum chamber adopting one-step molding technology ;¨®Surface treatment process is sand blasting ;¨®seal bar center distance¡êo500mm ;¨®dimension of vacuum chamber¡êo760;¨¢625;¨¢120mm ;¨®Sealing dimension¡êo600;¨¢10mm/2 ;¨®capacity¡ê©¡êo120-300 ;¨®Machine dimension¡êo1770;¨¢750;¨¢950mm ;¨®weight¡êo360kg ;¨®voltage¡êo380V¡ê¡§220V¡ê©/50HZ 2.2KW