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)
Gear Box Of Irrigation System SYF-1-58=30rpm(58:1 ratio)
SYF-1-60=29rpm(60:1 ratio)
(When input speed is 1740 rpm)
Introduction:
This kind of worm gear box has been widely used on the 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 aluminum alloy case and main transmission parts are produced from high power alloy. By use of large number sealing and dust-proof devices 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 offered).
3. Accepts NEMA 56-C encounter motors with 0.625”shafts, 2” long with 0.19” key slot.
4. Multiple install bolt patterns 5”×6”, 3.38”×6.38”match all pivots.
5. High strength light weight aluminum bronze worm gear.
• Multiple ratios available
• Aluminum gearbox housing.
• Contains keyway coupling for the motor to gearbox connection.
• Includes 2-seal savers for the output shafts.
• High strength light weight aluminum bronze bull gear.