​​ WSM Technology, Inc.  

Electric Motor Duty Cycle Explanation 

S1= Continuous operation maximum rating- The Mitsubishi Rating

S2= Short time duty maximum rating- The Haas Rating @ 150% 2 minutes 

S3= Intermittent periodic duty

S4= Intermittent periodic duty with start

S5= Intermittent periodic duty with start and brake 

S6= Continuous duty with intermittent loading- The Mits Rating 30 minutes

S7= Continuous duty with start and brake

S8= Continuous duty with periodic speed changes

S9= Non-periodic duty

S10= Duty with discrete constant loads

Spindle Ratings