Technical Data  Reducers  Worm Gear Reducers  Technical Data

EWJ/EW/SW Worm Starting Efficiency (Reference )(Double reduction ratio ：1/100 ～ 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 efficiencies are from a standstill speed of 0 r/min. Starting a reducer requires a higher amount of power than during normal operation. Use the values given above for reference.
Refer to the “Catalogue efficiency” and its calculation for normal operation. For the calculation method, please refer to Calculating efficiency.