Heavy duty quarter-turn modulating gearboxes suited for control valves.Torque range up to 47,000 Nm (34,500 lbf.ft)9 sizesRatios from 40:1 to 3000:1Up to 1,200 starts per hourGround and polished worm shaftAluminium bronze worm wheelComprehensive gear ratios combined with a selection of spur input reducersAngular contact bearingsRemovable output drive sleevesOptions for All types of environment