RN-Series bevel gearbox, named spiral bevel gear box, right angles change transmission directions and power, efficiency up to 95%. Gear ratio 1:1, 2:1 as our standard, also custom 1.5:1, 2.5:1, 3:1, 4:1, 5:1 gear box. 2 way,3 way,4 way gearboxes are ...