* T 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. * ARA series spiral bevel gearbox specialty: Aluminum alloy housing; Many standard types and sizes, plus special shafts; Multiple mounting positions; Smooth, quiet long operating time; Corrasion resistant. Minimal maintenance; Light weight, maximum strength and heat dissipation; Simplified design considerations.