Engineered to withstand the demanding requirements of global petroleum extraction, gas refinement, mining operations, and chemical manufacturing.
The global oil and gas sector operates within some of the most unforgiving environments on Earth. From offshore drilling platforms exposed to corrosive salt spray and extreme wind loads, to midstream pipeline pumping stations situated in dry, dusty deserts, the reliability of prime movers is critical. As the primary driving mechanism for pumps, compressors, fans, and centrifuges, electric motors represent the muscular core of upstream extraction, midstream logistics, and downstream chemical refining.
Selecting the right motor supplier requires a balance between strict engineering compliance, efficiency optimizations, and capital expenditure control. In an era where decarbonization and operational expenditure (OPEX) reduction are core corporate drivers, electric motors are undergoing significant technological upgrades. The move toward higher efficiency classes (IE4 and IE5), the widespread adoption of variable frequency speed regulation (VFD), and the implementation of robust explosion-proof standards (such as ATEX, IECEx, and GOST) represent the defining trends shaping the modern procurement landscape.
For global engineering procurement companies (EPCs) and operators, securing a reliable, direct-from-manufacturer supply chain in major industrial hubs like China has become a cornerstone of maintaining project timelines and cost integrity without sacrificing safety and performance parameters.
Xi’an Lite SIMO Motor Co., Ltd. is a major enterprise specializing in the manufacturing of large and medium-sized, high and low voltage AC motors, DC motors, synchronous motors, and explosion-proof motors in the Chinese mechanical industry. We are a comprehensive manufacturing and service supplier covering motor design, manufacturing, mechanical processing, mold making, and assembling.
SIMO ranks at the top of China’s motor industry regarding its scale of production and has maintained a fast-growing development trend for consecutive years. With a registered capital of 21.5 million RMB, the company operates three specialized manufacturing factories and one subsidiary factory, utilizing over 1,172 sets of advanced manufacturing and testing equipment. Our engineering team includes 21 senior engineers and 15 expert engineers who drive innovation in motor efficiency and hazardous-area safety design.
Our research and development efforts cover a vast array of industrial drive applications. SIMO's product portfolio includes 34 major series, over 1,800 varieties, and more than 19,500 individual specifications. Power output capacity ranges from 0.35 kW up to 25,000 kW, providing solutions for small-scale applications as well as large-scale industrial projects.
From our roots as a state-owned industrial plant to a modernized global manufacturer, our timeline reflects a history of continuous improvement and adaptation to global engineering standards.
SIMO Motor established and led by the Chinese government, initiating the local industrialization of electric drivetrains.
Relocation to the new industrial plant in Xi'an city, establishing the central manufacturing base.
Renamed to Xi'an Motor Factory after a series of acquisitions and integrations of regional mechanical manufacturing facilities.
Reformed from a state-owned factory into a limited liability company, introducing modern market-oriented management practices.
SIMO Motor Group established, organizing 14 subsidiaries into a unified industrial drive corporation.
Moved to a high-tech and advanced new plant, introducing CNC machining centers and advanced VPI varnishing systems.
Changed the corporate name to Tech Full Simo Motor, aligning the brand with global marketing structures.
Continuing development as a premier electric motor manufacturer, supplying hazardous-area motors worldwide.
The procurement of large-scale industrial machinery has shifted. China is no longer simply a high-volume manufacturing hub; it has evolved into a center for high-tech, precision-engineered electric machinery.
From primary silicon steel laminations and high-conductivity copper windings to heavy-duty casting foundries and state-of-the-art testing stations, Chinese motor manufacturers benefit from localized supply chains. This proximity minimizes raw material transit delays and allows for flexible modifications during production.
Because of our optimized production scales and automated assembly lines, SIMO can offer competitive pricing (what the industry terms "discount" procurement) without compromising raw material grade, copper content, or bearing quality. This provides a balance of price and performance for international projects.
Unlike rigid Western manufacturing frameworks that charging high premiums for minor variations, Chinese manufacturers are geared toward flexible custom designs. Whether you require specific shaft dimensions, dual-conduit box arrangements, customized temperature monitoring (PT100 RTDs), or specific marine paints, our engineering team can adapt designs to match project requirements.
Understanding the technical differences between high voltage asynchronous, low voltage high efficiency, and variable frequency motors is key to selecting the correct system configuration.
In oil refineries, offshore platforms, and petrochemical complexes, flammable gases, vapors, and combustible dusts create hazardous operating environments. To prevent ignition, SIMO designs explosion-proof motors using cast iron structures and flameproof paths that can withstand internal explosions without venting sparks or hot gases into the surrounding environment.
For applications exceeding 500 kW, low voltage systems require thick conductors and pose copper-loss challenges. High-voltage motors (6kV, 10kV, up to 13.8kV) offer a solution for large fans, centrifugal compressors, and water injection pumps. Utilizing class F insulation treated with Vacuum Pressure Impregnation (VPI) resins, these motors are designed for high dielectric strength and resistance to moisture.
Pumps and compressors in the oil and gas sector rarely run at constant loads. Running them at full speed using throttle valves to regulate flow leads to energy losses. By pairing motors with Variable Frequency Drives (VFD), system efficiency can be improved.
SIMO's VFD-compatible motors are built with insulated non-drive end bearings to prevent circulating shaft currents that cause premature bearing failure. They are wound with corona-resistant wire to handle the voltage spikes generated by IGBT switchgear.
SIMO motors are deployed across key processes in the hydrocarbon value chain. Below are the primary application scenarios where our engineering designs are implemented:
Drilling rigs require high startup torque to handle high pressure mud flows. Our custom Z Series Large DC Motors and TDMK AC Synchronous Motors are used to drive mud pumps, drawworks, and rotary tables, providing speed control and overload capacity.
Transporting crude oil and natural gas across continents requires intermediate booster stations. Our YKS High Voltage Induction Motors drive large centrifugal pumps and compressors, operating continuously under automated SCADA system monitoring.
Processing units utilize highly volatile hydrocarbons. The YBX3, YBX4, and YBX5 Flameproof Motors are standard for zone-classified refining sectors, powering process pumps, cooling tower fans, and mixing agitators safely.
Direct-on-Line (DOL) starting of high voltage motors can cause large inrush currents, sometimes 6 to 8 times the nominal current. This can lead to voltage sags on the plant's electrical grid, causing other sensitive equipment to trip, and induces high mechanical stress on the motor's rotor bars and winding end-turns.
Our High Voltage Soft Start Cabinets provide a solution by ramping up the voltage during startup, limiting the inrush current, and reducing mechanical shock to the couplings and pump impellers, which helps extend the operating life of the equipment.
SIMO has passed ISO9001 Quality System Certification, EU "CE", US "UL", Russian "GOST", and other international standards. Our electric motors are applied in electricity, coal, petroleum, mining, metallurgy, railway, transportation, chemical industry, agriculture, water economy, aviation, navigation, and high technology areas both in China and abroad.
For engineering departments and procurement officers in multinational energy firms, purchasing high-power electrical assets involves managing multiple risks. Operational downtime in a refinery can exceed hundreds of thousands of dollars per hour, making motor reliability critical.
A resilient procurement process requires validating multiple parameters:
Get technical answers regarding selection, certification, design customization, and procurement of oil and gas motors.
These motor series utilize flameproof enclosures (Ex d/de) that are designed to contain any internal electrical spark or explosion. The joint gaps (flamepaths) are tightly engineered so that escaping hot combustion gases are cooled below the ignition temperature of the surrounding atmosphere, preventing external ignition. Additionally, the external surface temperatures are strictly limited to remain below the ignition point of specific gas categories (e.g., T4 temperature class).
Under continuous duty cycle operations (S1) typical in oil and gas refineries, electricity consumption accounts for over 95% of a motor's life-cycle cost. Switching from IE3 to IE4/IE5 ultra-premium efficiency levels reduces electrical energy losses by up to 20-30%. This reduces both operational expenditure (OPEX) and the facility's carbon footprint.
Using traditional throttling valves to restrict flow creates significant fluid energy losses. Implementing VFD control allows the motor speed to adjust to real-time process demands. Our YVFE3 and YBBP variable frequency motors are designed to run at varying speeds without overheating, using external cooling fans (IC416) and reinforced insulation to withstand high dv/dt voltage spikes from the drive.
Historically, series-wound DC motors like our Z and Z4 series were favored for mud pumps and drawworks due to their high torque at zero speed and simple speed control. However, modern projects are shifting to AC induction motors powered by variable frequency drives. VFD systems offer similar torque performance to DC motors, require less maintenance (as there are no carbon brushes to replace), and do not pose a sparking risk in hazardous environments.
SIMO motors carry international certifications including EU CE, US UL, Russian GOST, and Chinese CCC. Our explosion-proof and high voltage lines comply with IEC 60034 and GB standards. We also accommodate custom third-party factory witness testing (e.g., SGS, Bureau Veritas, Lloyd's Register) based on project specifications.
Explore our range of heavy industrial drivetrains, certified soft starters, and specialized synchronous motors designed for mining and refining operations.
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