Engineered for Zone 1, Zone 2, Zone 21, and Zone 22 applications globally. Direct from certified manufacturing facilities.
Electric motors deployed in petrochemical plants, underground coal mines, oil refineries, and dust-heavy grain silos must operate under a fundamental safety mandate: preventing an internal ignition from triggering an external explosion. In the realm of industrial electric machinery, this is achieved through strict physical isolation and containment mechanisms. Flameproof (Ex d) enclosures are constructed with heavy-duty cast iron or steel structures capable of withstanding the extreme internal pressure of an explosion, cooling the expanding hot gases through precision-machined "flame paths" before they can exit the motor enclosure.
Additionally, modern manufacturing transitions from Ex d to Increased Safety (Ex e) and Dust Ignition Protection (Ex t) have introduced complex stator design challenges. By reducing localized heating, preventing sparks under heavy duty cycles, and utilizing hermetic IP65/IP66 sealing configurations, modern Chinese factories deliver exceptional protection. Xi'an Lite Simo Motor stands at the absolute vanguard of this mechanical evolution, blending 60+ years of industrial legacy with high-technology simulation modeling to meet the world's most rigorous thermal and mechanical limits.
Xi'an Lite SIMO Motor Co., Ltd. - Advanced Heavy-Industry Production Line
From a state-led pioneer in 1955 to China's premier heavy-machinery motor exporter, our lineage is defined by technical precision and industrial scale.
Xi’an Lite SIMO Motor Co., Ltd is a major enterprise specializing in the design, manufacturing, and servicing of large/medium-sized, high/low voltage AC motors, DC motors, synchronous motors, and explosion-proof motors within the Chinese mechanical industry. We offer complete manufacturing integration: from electrical R&D, structural simulation, advanced machining, tooling, and mold construction, to complete assembly and certification testing.
Our expansive manufacturing capability features 3 specialized manufacturing factories, 1 auxiliary subsidiary factory, a registered capital of 21.5 million RMB, and a robust inventory of over 1,172 sets of advanced industrial machinery. Our engineering core is spearheaded by 21 senior engineers and 15 certified expert engineers, guiding the industry's progression toward super-premium efficiency (IE4 and IE5) standards for hazardous location deployments.
SIMO Motor established and led by the Chinese government.
Relocated to a dedicated heavy industrial site in Xi'an city.
Renamed to Xi'an Motor Factory following systematic acquisitions and consolidations.
Successfully reformed into a limited company from a state-owned structure.
SIMO Motor Group established with 14 active subsidiaries.
Moved production lines to our advanced high-tech industrial park.
Officially rebranded to Tech Full Simo Motor to signal technical modernization.
Sustaining fast-growing trajectory, advancing global partnerships as a top-tier brand.
Unmatched capability across 34 major series, 1,800 varieties, and over 19,500 exact mechanical specifications.
Features YE3, YE4, and YE5 series asynchronous motors. Built on premium grade silicon steel laminations and optimized stator windings, these motors dramatically cut grid losses and comply with IE5 ultra-premium efficiency tiers.
Comprising YX, YXKK, YXKS (asynchronous) and YR, YRKK, YRKS (wound rotor) high-voltage setups. These heavy machines feature vacuum pressure impregnated (VPI) Class F insulation systems, offering high reliability in large mining ventilators.
Covers YVFE3, YVFE4, and YVFE5 low/high-voltage frequency-controlled motors, T, TD, TK, TDMK series synchronous motors, and massive TFW series generators. Delivers continuous speed adjustments under harsh loads.
Combining heavy casting industries with smart digital quality controls to achieve reliable output for mission-critical hazardous environments.
Whether powering pumps on offshore platforms, running coal conveyors underground, or driving ventilation blowers in chemical reactors, hazardous area motors must interface seamlessly with complex SCADA systems and Variable Frequency Drives (VFDs). Our specialized YBBP and YJP variable-frequency speed regulating motor families are optimized to prevent stator insulation failure caused by steep-fronted voltage pulses from VFD switching.
These systems feature integrated non-drive end insulated bearings, preventing circulating shaft currents from creating micro-pitting in bearing races. Stator designs are engineered with thermistors (PT100) embedded within the windings and bearings, allowing plant safety teams to continually track thermal parameters via digital networks. This preventative approach minimizes downtime in refining, petrochemical, and grain milling facilities.
China's Industry 4.0 infrastructure provides major structural advantages in raw material sourcing and production efficiency. Our Xi'an facility integrates precision robotic stamping of stator lamination sheets, automatic coil winding machines, and large-scale computerized Vacuum Pressure Impregnation (VPI) equipment. VPI ensures that the varnish deeply penetrates the winding slots, eliminating air pockets that could cause internal partial discharge.
Furthermore, because our supply chain sources steel, copper, and cast enclosures domestically, we maintain rapid turnaround times for custom configurations. Our mechanical processing centers utilize multi-axis CNC machines to achieve flame path tolerances down to the micrometer level. This ensures compliance with ATEX and IECEx specifications, keeping production costs highly competitive.
Meeting standardizations across multiple jurisdictions ensures safety compliance for global EPC engineering contractors.
| Certification Region | Standards Applied | Key Compliance Focus Areas | Typical Applications |
|---|---|---|---|
| Europe (ATEX) | EN 60079-0, EN 60079-1, EN 60079-7 | Flameproof enclosures (Ex d), Increased safety (Ex e), Dust ignition protection (Ex t) | Offshore oil platforms, chemical processing plants within the EEA |
| International (IECEx) | IEC 60079 series | Harmonized safety parameters for gas and dust explosive atmospheres | Global mining operations, chemical transport, petrochemical refining |
| North America (UL/CSA) | UL 674, CSA C22.2 No. 145 | Class I (Groups C, D) and Class II (Groups E, F, G) division classification | US and Canadian oil fields, refineries, and agricultural processing facilities |
| Eurasian Customs (GOST) | TR CU 012/2011 safety standards | Extreme low-temperature operating resilience down to -60°C | Oil pipelines and extraction sites across Russia, Kazakhstan, and Belarus |
| China (CCC Ex) | GB 3836 series | Mandatory national safety requirements for all industrial explosion-proof devices | Domestic mines, infrastructure projects, power stations |
How next-generation motors utilize digital diagnostics, alternative materials, and advanced designs to improve safety and lower ownership costs.
Embedding smart sensor modules directly into the motor casing allows real-time monitoring of vibration anomalies, bearing temperature spikes, and winding insulation degradation. This data helps teams identify issues before a failure occurs.
Explosion-proof motors have historically struggled with efficiency due to flame path clearances and internal windage losses. We are actively developing permanent magnet synchronous designs that meet the IE5 standard while maintaining explosion-proof protection.
By using optimized cast-steel formulas and specialized anti-corrosion coatings, next-generation enclosures resist chemical attacks in salty offshore environments and highly acidic mining atmospheres, significantly extending service life.
Find answers to common questions about engineering, selecting, and maintaining industrial explosion-proof motors.
Ex d (Flameproof) is designed to contain an internal explosion without letting it propagate to the surrounding atmosphere. The enclosure features heavy, precision-machined joints called flame paths that cool hot gases before they escape. Ex e (Increased Safety) focuses on preventing sparks, arcs, and excessive temperatures from occurring in the first place, using tighter tolerances and enhanced insulation to eliminate ignition sources.
Running a motor on a Variable Frequency Drive (VFD) introduces potential risks: electrical stress from voltage spikes, increased thermal loads at low operating speeds, and circulating shaft currents. Motors like the YBBP series include insulated bearings, VFD-compatible Class F insulation, and independent external cooling fans to prevent overheating and premature winding failure.
Reputable factories like Tech Full Simo Motor provide globally recognized certifications, including ATEX (Europe), IECEx (Global), UL (North America), GOST (Eurasian Customs Union), and CCC Ex (China). This wide range of compliance enables seamless integration into projects worldwide.
Dust explosion-proof motors prevent combustible dust (such as grain, coal, or metal dusts) from entering the motor housing. They feature ingress protection ratings of IP65 or IP66 and are engineered to keep surface temperatures below the ignition threshold of the dust layers in Zone 21 and Zone 22 environments.
Explore our high-efficiency three-phase, flameproof mining, DC, and soft-start cabinet portfolios designed for high-stress operations.
Lite Simo
