Model Numbers: 
SYF-1-20=87rpm(20:1 ratio)
SYF-1-30=58rpm(30:1 ratio)
SYF-1-40=43rpm(40:1 ratio)
SYF-1-50=35rpm(50:1 ratio)
SYF-1-58=30rpm(58:1 ratio)
SYF-1-60=29rpm(60:1 ratio)
(When input acceleration is 1740 rpm)
Introduction:
This type of worm gear box has been trusted on the Gear Box Of Irrigation System driveline (drive train) of the guts pivot irrigation system and the linear move (later move) irrigation system on North America, European area and Middle East. It employs light weight aluminum alloy case and main transmission parts are manufactured from high power alloy. By use of large number 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 attach bolt patterns 5”×6”, 3.38”×6.38”fit all pivots.
5. High strength aluminum bronze worm gear.
• Multiple ratios available
• Aluminum gearbox housing.
• Contains keyway coupling for the engine to gearbox connection.
• Contains 2-seal savers for the output shafts.
• High strength light weight aluminum bronze bull gear.