SG — water-cooled motors for shearer loaders and crushers, 1100–1140 V, 22–375 kW
A 1140 V network is the standard supply for powerful longwall mining complexes at coal mines in Poland and CIS countries: compared with 660 V, it halves the current for the same power, reduces the cross-section of the flexible cables of the shearer loader and
- Power
- 22–375 kW
- Voltage
- 1100 / 1140 V
- Rotational speed
- ≈ 1450–1490 rpm
- Cooling
- water
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
A 1140 V network is the standard supply for powerful longwall mining complexes at coal mines in Poland and CIS countries: compared with 660 V, it halves the current for the same power, reduces the cross-section of the flexible cables of the shearer loader and the voltage drop on long longwalls. This item covers the SG series motors for shearer loaders and face crushers produced at 1100 and 1140 V. At 1140 V the catalogue presents types from SG1(4) 180S-4 (22 kW, S4-60 % duty, 40 starts/h) to SG8W 562L-4B (375 kW, IP66). Many motors of 200–375 kW are produced only at 1000/1140 V — for example SG3B 470L-4 (200 kW, 1000/1100/1140 V), SG6W 580L-4A (300 kW), 3SG4W 562L-4A (350 kW), 5SG7W 650L-4 (350 kW), SG8W 562L-4B (375 kW). The rotational speed is about 1465–1485 rpm; cooling is water through the frame jacket; duty types S1, S4-60 % and S6-60 %; for some types, 30 starts per hour (SG8 335M-4, 180 kW, 660/1140 V). The motors are intended for the cutting and feed mechanisms of shearer loaders, face crushers and pumps of the shearer, and are produced in a flameproof version for workings hazardous due to methane and coal dust. The item is an analogue of the 1140 V shearer motors used at mines in Ukraine.
Technical specifications
| Power | 22–375 kW |
|---|---|
| Voltage | 1100 / 1140 V |
| Rotational speed | ≈ 1450–1490 rpm |
| Cooling | water |
| Degree of protection | IP55, IP66 (SG8W) |
| Duty types | S1; S4-60 %, 30–40 starts/h; S6-60 % |
| Types | SG1(4) 180S-4, 3SG6, SG6, SG4B 540L, SG6W 580, SG7W 490/495, SG8W 562, 5SG7W 650 |
Request a price and lead time
SG — water-cooled motors for shearer loaders and crushers, 1100–1140 V, 22–375 kW. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
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