Explore our state-of-the-art electric motors, soft start systems, and custom synchronous configurations built for high-voltage and severe explosion-proof environments.
For over six decades, Xi'an Lite SIMO Motor has stood at the forefront of China's heavy-duty electrical mechanical industry. As a recognized scale leader, we engineer, manufacture, and distribute medium-to-large-scale, high-voltage/low-voltage AC/DC electric motors, synchronous drivetrains, and flameproof machinery designed specifically for the rigorous constraints of global mining installations.
By integrating design R&D, structural tooling, precision machinery processing, insulation systems engineering, and state-of-the-art testing under one organization, SIMO delivers custom electric power components optimized for structural stability, thermal resistance, and operational safety.
Six decades of continuous technological integration, plant upgrades, and custom electrical solutions.
Why global mining systems operators choose SIMO Motor as their strategic heavy machinery partner.
Heavy-duty mineral mining requires equipment that can withstand high stress. Conveyor belts, high-power ventilation networks, mineral slurry pumps, and secondary processing mills must run continuously without unexpected shutdowns. At Xi'an Lite SIMO Motor Co., Ltd, we design systems specifically to prevent electrical and mechanical failures caused by harsh environments.
The lifespans of high-voltage motors (such as our YXKK, YKS, and YRKK series operating at 6kV and 10kV) depend heavily on the quality of their insulation. Standard designs can fail when exposed to thermal cycling and moisture. To prevent this, SIMO uses a Class F insulation system (with Class H capability) processed via automated Vacuum Pressure Impregnation (VPI).
This method replaces air pockets in the stator slots with a solventless epoxy resin. The result is a solid, moisture-resistant winding structure with excellent thermal conductivity. This design reduces internal corona discharge, protects against chemical exposure, and ensures stable operations in damp mine shafts.
In underground coal mining, explosive gases like methane and combustible coal dust present constant hazards. Drive motors must prevent any internal spark or thermal anomaly from igniting the surrounding environment. Our YBX3, YBX4, and YBX5 series flameproof motors are built to meet these safety requirements.
These motors feature robust cast-iron housings designed to contain internal explosions without rupture. Joint pathways are precision-machined to cool escaping combustion gases below ignition temperatures before they reach the outside environment. Additionally, our YBBP series low-voltage explosion-proof variable frequency motors combine flameproof security with variable-speed control, making them ideal for modern extraction machinery.
| Motor Series | Type / Configuration | Voltage Options | Power Range | Cooling & Enclosure Class | Primary Industrial Applications |
|---|---|---|---|---|---|
| TDMK Series | AC Synchronous | 6kV, 10kV | up to 25,000 kW | IP44 / IP54, IC01 / IC81W | Heavy Mine Grinding Mills, Ball Mills |
| YXKK / YKK | HV Squirrel Cage Induction | 6kV, 10kV | 220 kW - 25,000 kW | IP54 / IP55, IC611 (Air-Air) | Main Ventilation Fans, Slurry Pumps |
| YRKK / YR | HV Wound Rotor (Slip Ring) | 6kV, 10kV | 160 kW - 10,000 kW | IP54, IC611 | Heavy Conveyors, Hoists, Crushers |
| YBX5 / YBX3 | Flameproof Ex Induction | 380V, 660V, 1140V, 6kV | 0.55 kW - 2,000 kW | IP55, Flameproof (Ex d I Mb) | Underground Extraction, Coal Feeders |
| YE5 / YE4 | Ultra-Premium Efficiency | 380V, 660V | 0.75 kW - 375 kW | IP55, IC411 (TEFC) | Continuous Process Pumps, Auxiliary Fans |
| Z / Z4 Series | Industrial DC Motor | Custom DC Excitations | up to 2,000 kW | IP23 / IP44, IC06 / IC17 / IC37 | Mine Excavators, Reversing Rolling Mills |
Energy consumption accounts for a large portion of a mine's operating costs. In continuous processing plants, motors running 24/7 consume many times their capital cost in electricity each year. Upgrading from legacy systems to YE4 (IE4 Premium Efficiency) or YE5 (IE5 Ultra-Premium Efficiency) three-phase asynchronous motors helps reduce this overhead.
Our YE5 series features optimized stator laminations and rotor geometries that reduce copper losses, core losses, and windage friction. By lowering internal heat generation, these motors run cooler and require less maintenance, extending the life of bearings and insulation.
To ensure smooth integration into global systems, SIMO motors are fully tested and certified under international quality frameworks, including ISO9001, European Union "CE" marking, United States "UL" standards, and Russian "GOST" criteria.
Engineered configurations designed for high-stress extraction, heavy transport, and processing operations.
A look at the advanced production tools and testing setups used at SIMO Motor.
Answers to common technical questions from procurement teams and electrical system engineers.
A: Large ball mills present continuous high-torque demands and can degrade a mine's power factor. TDMK series AC synchronous motors allow operators to adjust excitation to run at a leading or unity power factor. This helps correct voltage drops across the local network, reduce reactive power fees, and maintain stable speed under load variations.
A: Wound rotor motors are ideal for applications requiring high starting torque, such as long conveyors or heavy crushers. By connecting external resistance to the rotor circuit via slip rings, starting torque can be optimized while limiting current draw from the grid. As the motor reaches operating speed, the external resistance is bypassed, maximizing running efficiency.
A: Our flameproof motors (YBX3, YBX4, and YBX5) are built with heavy cast-iron enclosures. All joint surfaces and flange clearances are machined to tight tolerances to create a flameproof path. If gas leaks inside the motor and ignites, the housing contains the explosion, and the escaping gases are cooled below ignition temperatures before reaching the outside environment.
A: Cooling configuration depends on the operating environment. Air-to-air cooling (IC611) uses a top-mounted heat exchanger and is suitable for dry, dusty environments. Water-to-air cooling (IC81W) offers higher cooling efficiency and is ideal for hot, confined underground locations where clean cooling water is available.
A: Direct-on-line (DOL) starting of high-voltage motors can create voltage drops in local grids and subject mechanical parts to high stress. Soft starters reduce starting current, protect mechanical linkages, and extend the operating life of gears and belts.
Browse our complete range of high-efficiency AC induction motors, classic DC drives, and specialized cooling configurations.
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