helical gearbox ningbo reducer Outline dimension:40,60,80,120,160mm Ratio: ... ,distance 1m,measured on idle running with an input speed of 3000rpmHigh precision planetary gearbox matched with serve motor, ... first high-precision helical planetary gear reducer in 2011;ZD developed a robot-specific reducer in 2011.Honors:Ningbo’s ... micro motorOur Certification:Our factory: helical gearbox ningbo reducer