JTA20 Miter Gearbox Descriptions 1. Die-casting aluminum housing, lightweight, small sizes and corrosion resistance. 2. 1:1 ratio, 2:1 reduction ratio, efficiency is 95%. 3. Configuration available input and output solid shaft. 4. There are two way (one input and one output shaft), three way (one input and daul output shafts). 5. Spiral bevel gear units can rotate in both directions and transmit smoothly, low noise, light vibration, high performance. 6. Maximum output torque ranging 18.15 Nm. 7. Low backlash, quiet low noise, low running temperature.