Explore our core high-voltage, low-voltage, explosion-proof, and variable frequency industrial motors engineered to custom specifications.
In the modern manufacturing landscape, off-the-shelf electric motors often fall short when confronted with specialized engineering constraints, varied voltage levels, and severe environmental demands. Custom kilowatt (kW) electric motors represent a critical bridge, allowing custom specifications to align perfectly with load requirements, torque limits, space layouts, and regional energy directives.
Whether designing high-voltage three-phase asynchronous motors for mining operations or precision DC motors for metal rolling lines, custom motor design starts with structural and electromagnetic calculations. By customizing variables such as stator winding density, rotor core steel grade, insulation class, and thermal dissipation systems, manufacturers can optimize performance metrics. This specialized optimization directly translates to increased operational reliability and significant reductions in energy consumption.
With over six decades of heritage, SIMO Motor stands as an industry leader in large/medium-sized, high/low voltage, AC, DC, and explosion-proof motors.
SIMO is a comprehensive manufacturing and service supplier covering motor design, mechanical processing, high-precision tooling, assembly, and automated testing. The company's R&D output encompasses 34 major series, over 1,800 varieties, and 19,500 individual specifications. The rated power scale extends from a compact 0.35 kW up to an impressive 25,000 kW.
Equipped with 21 senior engineers and 15 expert engineers, SIMO operates at the frontier of high-voltage efficiency (YX, YXKK, YXKS series) and low-voltage ultra-premium efficiency (YE3, YE4, YE5 IE5 series). Our custom work complies with strict European Union CE, United States UL, and Russian GOST requirements, helping clients deploy heavy machinery globally without regulatory friction.
Decarbonization, regulatory compliance, and mechanical optimization drive the need for customized electric powertrains across international borders.
With regional bodies phasing out IE2/IE3 categories in favor of IE4 and IE5 (Ultra-Premium Efficiency) systems, custom engineering ensures high efficiencies are reached at lower operational loads.
Older power plants, ships, and mining ventilation shafts present limited dimensional spaces. Custom frame sizing matching older machinery allows fast upgrades without altering foundations.
Corrosive chemical plants, offshore oil platforms, and sub-zero environments require unique coatings, specialized cooling designs (air-to-water or external fans), and robust explosion protection.
Custom kW electric motors deliver critical mechanical output across key global industries:
Wound rotor motors like the YR, YRKK, and YRKS series are engineered to provide high starting torque with low starting currents. These motors are ideal for heavy jaw crushers, large conveyor systems, and ball mills where starting under load is common.
Dust explosion-proof series (YBX3, YBX4, YBX5, YFB3, YFB4) provide critical safety in volatile chemical environments. Internal gas-tight housing and dust ignition-proof construction prevent internal sparks from igniting external hazardous elements.
High-voltage, vertical-shaft three-phase asynchronous motors provide continuous, long-term operation. Utilizing air-to-water (YKS) or air-to-air cooling (YKK), these motors optimize temperature regulation in demanding water infrastructure projects.
DC motors (Z2, Z4, Z series) remain the preferred choice for applications requiring precise speed adjustment and dynamic torque control, such as metal rolling mills, paper extrusion plants, and marine thrusters.
Why China-based heavy industrial manufacturing clusters offer unparalleled advantages in terms of delivery speed, quality control, and cost efficiency.
The production of large kW electric motors is resource-intensive, requiring high-grade electrical steel laminations, high-purity copper windings, complex shaft castings, and precision insulation materials. By locating key manufacturing assets within the industrial center of Xi’an, China, SIMO leverages a highly integrated supply chain ecosystem.
This geographic localization provides three main advantages:
As industrial systems evolve, SIMO’s development pipeline centers on three key areas:
SIMO meets stringent quality systems, electrical standards, and safety certifications required by global buyers.
















Technical answers to critical questions commonly raised by system engineers and procurement professionals.
Further industrial-grade electric motor designs and custom controllers from SIMO manufacturing units.