美国原装进口bourns h-22-a6精密刻度旋钮，不锈钢外壳，纯铜内锁心，刻度分明，精密准确，稳定安全，使用寿命长，广范应用于工业控制系统，仪器仪表控制，机械设备控制，通信工程控制，性能优越，品质保证，深受广大用户好评！ mechanical and physical characteristics number of turns .............................................................................................................................................................................0 to 15 dial divisions ............................................................................................................................................................................ 50 per turn readability - over 10 turns ...............................................................................................................................................2 parts in 1000 torque with brake engaged ...................................................................................................................6.95 oz-in. (500 g-cm) minimum markings ...........................................................................................black on satin chrome background or white on black background locking brake ...................................................................................................................................................................................... yes weight ......................................................................................................................................................................... 15 grams (0.53 oz.) set screw ......................................................................................................................................................... unc n2-56, one included set screw tightening torque .............................................................................................................. 16.94 n-cm (1.5 lbs.-in.) minimum hex key size ........................................................................................................................................................................... 0.05 in. hex shaft and bushing requirements shaft diameter requirements ................................................................................................................................... refer to chart below shaft extension beyond panel ................................................................................................................... 18.1 mm (0.712 in.) minimum 22.2 mm (0.875 in.) maximum bushing extension beyond panel .............................................................................................................. 9.53 mm (0.375 in.) maximum