Introduction:
This kind of worm gear box has been trusted on the driveline (drive train) of the guts 
pivot irrigation system and the linear move (later move) irrigation system on North Center-dive Gear Box Of Irrigation System America, European area and Middle East. It employs aluminum alloy case and major transmission parts are made from high power alloy. By usage of lot sealing and dust-proof products it features light in weight, long service life and good tightness as well.
Performance:
1. Torque capacity: 4,500 lb.in (510 N.m).
2. Ratio: 20:1,?30:1,?40:1,?50:1,?58:1, 60:1 (others obtainable).
3. Accepts NEMA 56-C face motors with 0.625”shafts, 2” long with 0.19” key slot.
4. Multiple mount bolt patterns 5”×6”, 3.38”×6.38”match all pivots.
5. High strength light weight aluminum bronze worm gear.