ST series spiral bevel gearbox overview: ◆ ST series spiral bevel gearbox with various types are standardized, all ratios of 1∶1, 1.5∶1, 2∶1, 2.5∶1, 3∶1, 4∶1 and 5∶1 are actual ones. Average efficiency is 98%.◆ There are one input shaft, two input shafts, unilateral output shaft and double side output shaft.◆Spiral bevel gear can rotate in both directions and transmit smoothly, low noise, light vibration, high performance.◆If ratio is not 1:1,if input speed on single-extendalbe shaft, out put speed will be reduced; if input speed on double-exfendable shaft, output speed will be reduced.