technical data Reducer Worm Reducer technical data

EWJ/EW/SW worm starting efficiency (reference value) (Double reduction: 1/100 to 1/3600)

size Reduction ratio Start-up efficiency size Reduction ratio Start-up efficiency size Reduction ratio Start-up efficiency
EWJ50 100 39.0% EW80
SW80		 100 41.6% EW150
SW150		 100 42.9%
150 34.6% 150 37.1% 150 37.6%
200 30.1% 200 34.5% 200 35.0%
250 27.5% 250 31.9% 250 33.0%
300 28.6% 300 30.2% 300 31.4%
400 24.9% 400 28.1% 400 29.2%
500 22.8% 500 26.0% 500 27.5%
600 20.7% 600 21.7% 600 23.1%
800 16.4% 800 19.6% 800 20.4%
1000 14.8% 1000 17.5% 1000 18.7%
1200 12.7% 1200 15.9% 1200 17.6%
1500 12.9% 1500 15.7% 1500 16.5%
1800 11.7% 1800 13.1% 1800 13.9%
2400 9.3% 2400 11.8% 2400 12.2%
3000 8.4% 3000 10.6% 3000 11.2%
3600 7.2% 3600 9.6% 3600 10.6%
EWJ63 100 39.0% EW100
SW100		 100 42.2% EW175
SW175		 100 43.6%
150 34.6% 150 37.6% 150 38.9%
200 30.1% 200 35.0% 200 35.6%
250 28.2% 250 32.3% 250 33.7%
300 28.1% 300 30.8% 300 32.5%
400 24.4% 400 28.6% 400 29.7%
500 22.9% 500 26.5% 500 28.1%
600 19.8% 600 22.1% 600 24.2%
800 16.6% 800 20.0% 800 20.9%
1000 17.2% 1000 17.8% 1000 19.3%
1200 13.5% 1200 16.2% 1200 18.2%
1500 13.6% 1500 16.2% 1500 16.8%
1800 11.8% 1800 13.5% 1800 14.5%
2400 9.9% 2400 12.2% 2400 12.5%
3000 9.0% 3000 10.9% 3000 11.6%
3600 8.1% 3600 9.9% 3600 10.9%
EWJ70 100 38.4% EW125
SW125		 100 42.2% EW200
SW200		 100 42.9%
150 34.0% 150 37.0% 150 38.4%
200 29.6% 200 34.3% 200 35.8%
250 27.7% 250 32.3% 250 33.2%
300 28.1% 300 30.8% 300 31.3%
400 24.4% 400 28.6% 400 29.2%
500 22.9% 500 27.0% 500 27.0%
600 19.8% 600 22.6% 600 23.3%
800 16.6% 800 19.8% 800 20.7%
1000 17.2% 1000 18.2% 1000 18.6%
1200 13.5% 1200 17.1% 1200 17.0%
1500 13.2% 1500 15.7% 1500 15.3%
1800 11.4% 1800 13.1% 1800 13.2%
2400 9.6% 2400 11.5% 2400 11.7%
3000 8.7% 3000 10.6% 3000 10.5%
3600 7.8% 3600 9.9% 3600 9.6%

Note) Starting efficiency is the efficiency when the rotation speed is 0 r/min. When starting the reducer, more power is required than when it is running. Use the above values as a reference.
Under normal circumstances, please use the continuous efficiency listed in the catalog. For the calculation method, please refer to "Efficiency Calculation."