Explore our flagship industrial-grade induction, explosion-proof, and high-voltage horizontal shaft motor lines. Engineered for unmatched performance under extreme loads.
In the contemporary industrial ecosystem, horizontal shaft motors represent the foundational driving force behind macroscopic mechanical processes. From large-scale petrochemical facilities to underground extraction units and metropolitan water supply frameworks, the horizontal mechanical mounting (commonly categorized under international standards such as IEC IM B3, B35, or NEMA Foot-Mounted parameters) provides unmatched structural stability and axial load capabilities.
Globally, the transition toward carbon-neutral industrial operations has compelled a major redesign of drive architectures. Horizontal shaft configurations allow for direct, inline coupling with high-capacity centrifugal pumps, industrial blowers, compressors, and pulverizers. The direct physical alignment minimizes mechanical losses, eliminates the complex angular gearing typical of vertical shaft configurations, and dramatically simplifies vibration dampening protocols. Current industry analytics indicate that horizontal shaft motors account for more than 75% of high-voltage and medium-voltage industrial deployments globally, reinforcing their dominant status in commercial energy and manufacturing infrastructures.
Full adherence to IEC, NEMA, CE, GOST, and UL configurations. Ensuring drop-in compatibility across international boundaries and varying power grid regimes.
Minimized shaft deflection, superior bear load distribution, and linear force transfer which significantly extends bearing lifespan and reduces maintenance cycles.
Class F or Class H vacuum pressure impregnated (VPI) insulation methods, coupled with advanced cooling pathways (YKK air-to-air, YKS water-to-air) for thermal stability.
From standard AC induction systems to highly customized explosion-proof large-scale architectures.
The dynamic behavior of a horizontal shaft motor depends on its structural integrity, rotor dynamics, and electromagnetic design. In high-output configurations (ranging from 0.35 kW to 25,000 kW), the gravitational force acting perpendicular to the shaft centerline demands precise mechanical tolerances. This is particularly true for high-voltage systems (6kV, 10kV) and heavy-duty DC variants (such as the Z2, Z4, and larger Z series).
Rotor deflection due to gravitational pull can cause air-gap eccentricity, leading to unbalanced magnetic pull (UMP). This issue becomes more severe under high-voltage stresses. At SIMO, we tackle this by performing dynamic balancing at operating speeds, using rigid-shaft design criteria, and applying finite element analysis (FEA) to verify critical speeds. These measures ensure that our motors keep vibration velocities well below the strict thresholds defined in ISO 10816-3.
Effective thermal management is crucial for extending insulation life. Our technical roadmap highlights two primary cooling methods for horizontal shaft configurations:
In hazardous areas like underground coal mines (where our YBK3 flameproof series is widely used) and petrochemical facilities (which rely on the YBX3, YBX4, and YBX5 series), our horizontal enclosures are built to contain internal explosions. The flameproof joints are machined to extremely tight tolerances, preventing any internal flame from escaping and igniting volatile gases or dust in the surrounding atmosphere.
More than 60 years of deep expertise in motor design, manufacturing, mold making, and advanced mechanical processing.
Xi’an Lite SIMO Motor Co., Ltd is an electric company, main enterprise specializing in the manufacturing of large/medium-sized, high/low voltage AC motors, DC motors, synchronous motor, and explosion-proof motor in the Chinese mechanical industry.
SIMO is a comprehensive manufacturing and service supplier of motor design, manufacturing, mechanical processing, mold making, assembling. The Company ranks TOP in China’s motor industry as to its scale of production, and has maintained fast-growing development trend for consecutive years.
The registered capital is 21.5 million RMB. SIMO has 3 manufacturing factories, one subsidiary factory, with fixed assets 380 million RMB and more than 1172 sets of advanced equipment. There are more than 1200 employees, more than 260 technical engineers, including 21 senior engineers, 15 experts engineers.
SIMO products conform to major international compliance schemes, certifying reliable operation under critical conditions.
Our motors have passed ISO9001 Quality System Certification, European Union “CE” mark, United States “UL” safety standards, and Russian “GOST” specifications. These solutions are widely applied in electricity generation, coal extraction, petroleum refining, heavy mining operations, metallurgy, railways, chemical plants, and municipal water conservancy networks.
Our manufacturing portfolio covers 34 major series, 1,800 varieties, and more than 19,500 distinct specifications.
SIMO designs and manufactures a comprehensive range of horizontal shaft motors to meet diverse industrial needs: YX, YXKK, YXKS series high-voltage, high-efficiency three-phase asynchronous motors; YR, YRKK, YRKS series wound-rotor high-voltage motors; YE3, YE4, YE5 series super-efficient asynchronous motors; VSD (YVFE3, YVFE4, YVFE5 series) variable frequency/speed systems; YBX3, YBX4, YBX5 series low/high voltage explosion-proof motors; T, TD, TK, TDMK series large synchronous motors; TFW series generators; and the classic Z2, Z4, and Z series DC motors.
In petrochemical processing plants, safety and continuous operation are critical. For pump stations and gas compressor drives, SIMO supplies explosion-proof, low-voltage, and high-efficiency horizontal motors (such as the YBBP and YBX3/YBX4/YBX5 series). These motors are engineered to withstand ambient hydrocarbon gases while maintaining high efficiency, helping plants reduce downtime and comply with local environmental standards.
Heavy mining equipment, such as rock crushers, conveyors, and ball mills, requires high starting torque and the ability to handle severe overloads. The YR, YRKK, and YRKS series wound-rotor motors are ideal for these applications. Their horizontal shaft design helps distribute mechanical stress evenly, which prevents shaft failure under high shock loads. By integrating external slip ring configurations, these systems can start smoothly under full load, preventing voltage drops in local industrial grids.
Large-scale municipal water transfer projects require high-reliability motors for continuous pumping. The YKS water-to-air cooled series provides a highly efficient solution for water networks. It runs quiet and transfers heat directly to the water loop, eliminating the need for large ventilation systems. This makes it an ideal fit for underground and urban pumping stations.
Expert engineering answers to common technical queries about horizontal shaft motor design, operation, and selection.
High-voltage three-phase configurations, wound rotor systems, and specialized industrial drives engineered for maximum torque.
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