The NEMA double reduction worm drive units are specific to the US market and have motor couplings in line with NEMA standards and shaft or cable (depending on the drive unit) in inches. The characteristics of double reduction worm drive units in the NEMA version are:
Summary data
- Die-cast aluminum housing on sizes 026, 030, 040, 050, 063, 070, 075, 090 and 110. Cast iron housing on size 130;
- Double taper roller bearing on sizes 090, 110 and 130;
- Permanent synthetic oil long-life lubrication.