Raydafon Double Reduction Worm Gear Units are constructed using two single reduction worm gear units. The primary worm gear unit is specially designed to mount integrally on a standard single worm gear unit which forms the secondary stage. The complete gear unit becomes compact and rigid in arrangement for slow moving machinery. A wide range of ratio from 75:1 to 4900:1 is available. These gear units are particularly suitable for high torque slow-speed drives. Worm gearing conforms to BS-721.
The exclusive use of the involute helicoid thread form on the worm and gear provides for high efficiencies and long service life. The hardened, ground and polished alloy steel worm develops a smooth, work hardened surface on the bronze gear. For this reason, the worm gears wear in and improve with prolonged service while other gears are wearing out.
UnderdrivenSNU-UD / SFUD
OverdrivenSNU-OD / SFOD
Verticle output shaftSNU-VD / SFVD ( UP/down )
Hollow output shaftSNU-SMD /SSMD
Sizes1¾/30, 2¼ /40, 2¼ /50, 3/60, 3/70, 4/80, 4/90, 5/105 , 5/120 , 6/140 , 7/170
RatioMin. 75 : 1 to Max 4900 : 1
Power Capacity50 kW
Double reduction worm gear motor consists of two worm gearboxes(RV Series or WP series worm gearbox) with an AC motor or DC motor. Our most popular type is NMRV series worm gearboxes with AC motor. With a large speed ratio of 100:1~5000:1, it is widely used in some applications requiring very low speed. And the two worm gearboxes and the motor can be connected in different mounting positions to meet different application needs.
Address
Luotuo Industrial Area, Zhenhai District, Ningbo City, China
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