High-performance electric motors designed to drive critical lubrication systems under extreme conditions.
Shaanxi Nanfang Motor Technology Co., Ltd is the authorized distributor of Wolong. Wolong Electric Drive Group Co., Ltd was founded in 1984 and successfully listed in 2002 (code SH600580). After more than 30 years of development, Wolong has 3 manufacturing bases, 39 factories, and 3 R&D centers worldwide now. Wolong has always focused on the manufacture of motors and control systems, committed to a global brand strategy, making Wolong a leader in R&D, technology, process, manufacturing and sales in the global market.
By acquiring world-leading industrial motor brands, Wolong has combined German precision, British engineering, and Chinese cost-efficiency.
In 2011, WOLONG's holdings group successfully acquired 97.94% of the Austrian ATB Group (ATB motor), one of the three major European motor manufacturers. This acquisition included Morley—with its nearly 130-year history in underground coal mining—providing high-specification electrical equipment globally.
Brook Crompton joined the group, bringing over a century of motor development. Offering low, medium, and high voltage drive packages. Since 1882, Schorch (acquired in 2011) has defined driving systems standards in oil, gas, power generation, and steel processing.
In 2015, CNE (China's largest explosion-proof motor base) joined Wolong. Followed in 2018 by General Electric's (GE) commercial and industrial motor division, reinforcing global technical design frameworks for major oil & gas infrastructure.
Lube oil pump motors are the heartbeat of rotating equipment. If the lubrication loop fails, the entire steam turbine, compressor, or mining crusher suffers catastrophic breakdown.
Petrochemical refineries and gas transmission stations demand continuous operations. Our high-efficiency explosion-proof motors (YBX3, YBX4, YBSS) drive primary lube oil systems for high-speed gas compressors, ensuring long-term thermal dissipation and zero ignition hazard under volatile Zone 1 and Zone 2 conditions.
Whether in nuclear, gas, or thermal power plants, lube oil pumps supply hydraulic oil to the main shafts of large steam turbines. Laurence Scott low starting current induction motors guarantee rapid, reliable emergency startup to safeguard turbine bearings from frictional failure.
Explosion hazards and heavy ambient dust dictate the mechanical specifications of mine lube motors. Morley's robust coal mine flameproof motors handle heavy loads, extreme vibration, and abrasive coal dust while delivering high-torque performance to keep conveyor gearboxes lubricated.
Detailed structural engineering optimized for harsh environments, heavy starting friction, and prolonged operation lifespan.
The rotor features the squirrel cage design, with cast aluminum rotors being widely utilized. These rotors are produced using either centrifugal aluminum casting or die-casting techniques, where molten pure aluminum is poured into the slots of the rotor core, resulting in a single-piece construction that integrates the rotor bars and end rings.
The structural integrity and manufacturing process of cast aluminum rotors guarantee the motor rotor's reliability, and also endow the motor with outstanding torque properties. For larger capacity motors, copper bar rotors are employed, which benefit from dependable bar securing and end ring welding procedures. Additionally, the protective ring design of high-speed motors further ensures the reliable operation of the copper bar rotor.
The coil is crafted from polyester film and reinforced with glass cloth, utilizing either low-powder mica tape with a high mica content or medium-powdered mica tape with an abundance of mica. Following the VPI (Vacuum Pressure Impregnation) process, a pristine white coil emerges from the production line.
After the billet is extracted from the wire, it proceeds through the VPI process to transform into a finished unit. The winding and insulation are meticulously engineered to provide exceptional electrical performance, mechanical strength, resistance to moisture, and thermal stability.
The motor frame employs a fully digital platform for structural and fluid multi-physics field simulations. This simulation platform retains the original patent's structure and design, utilizing mature, high-strength cast iron (or steel as an alternative).
The frame boasts exceptional structural redundancy, outstanding heat dissipation properties, and ample inherent frequency isolation margins for the entire machine. It is engineered to endure significant mechanical shocks, maintain a superior vibration level, and ensure a lower temperature increase in the motor.
The low-noise fan cover system comprises a fan cover body, an air guide cylinder, a protective window, and a silencer plate. Its compact structure and lightweight design facilitate vibration reduction. The air inlet is situated on the side, which optimizes the avoidance of obstacles behind the motor, minimizing adverse effects on ventilation and reducing noise caused by energy loss during propagation path changes.
The system also incorporates sound-absorbing materials that absorb noise, thereby lowering the overall motor noise. Additionally, the fan cover is rated IP22, ensuring that hands cannot come into contact with the fan blades.
How modern tech is reshaping lube oil pump motors: Variable Frequency Drives (VFD), high efficiency standards, and industrial internet systems.
The industry transition from induction to permanent magnet (PM) synchronous motors is gaining velocity. Our TBVF series drives offer IE5 super-premium efficiency levels. By eliminating rotor copper losses, PM motors remain highly efficient even during partial load operating conditions common in variable viscosity lube oil applications.
Integrating VFDs allows the oil pump speed to adjust dynamically in response to lubricant temperature and viscosity fluctuations. To combat the premature winding stress caused by fast switching frequencies of VSDs, our motors feature advanced corona-resistant insulation systems and insulated bearings.
Integration of thermal, vibration, and acoustic sensors directly into the motor housing. By transmitting real-time operational data to central SCADA systems, operators can detect anomalies such as bearing wear, phase imbalance, or rotor eccentricity before they trigger a system-wide oil pressure drop.
WOLONG has secured the majority of product certifications, enabling it to penetrate the international market without friction.
How our digitized production model guarantees short lead times, material consistency, and lower total cost of ownership.
From raw silicon steel laminations and raw copper wire winding to frame casting and rotor processing, all core processes are housed in-house. This prevents supply bottlenecks, guarantees tight mechanical assembly tolerances, and maintains structural integrity.
Our factories leverage automated inspection technology. Stator isolation diagnostics, high-voltage leakage testers, dynamic rotor balancing instruments, and thermal camera test bays operate in sequence to ensure that every motor shipped conforms to standard limits.
By manufacturing in bulk and using energy-efficient materials, Wolong offers a reduced upfront cost profile. This ensures international oil and gas plants, engineering contractors, and OEM pump builders can balance high technical standards with capital efficiency.
Ensuring seamless integration of electrical drives into your localized project environments.
When sourcing lube oil pump motors for major critical loops, global procurement teams must address four core operational parameters:
As an authorized supplier, Shaanxi Nanfang Motor Technology links domestic manufacturing capability directly with global engineering frameworks.
Through Wolong's 39 global production facilities and international service points in the US, Europe, Middle East, and Asia-Pacific, clients receive rapid site commissioning, emergency spare parts logistics, and local compliance consulting services.
Get expert insight into common queries regarding lube oil pump motors, specifications, and applications.
Lube oil systems in hazardous locations require explosion-proof enclosures like Flameproof (Ex d) or Increased Safety (Ex e). In non-hazardous regions, TEFC (IP55/IP56) motors are preferred to prevent dust and moisture ingress.
Lubricating oil viscosity increases significantly at lower ambient temperatures. Motors must possess robust torque curves to drive cold pump startups without stalling or exceeding safe thermal limits.
Yes. Motors like our WEBP3 or TBVF series are designed for VSD drive packages. They feature insulated non-drive-end bearings and specialized winding coatings to combat voltage spikes and prevent motor bearing damage.
While ATEX is a mandatory European Union directive, IECEx is a global certification scheme. Both certify that the equipment maintains flameproof design margins, allowing seamless deployment in global petrochemical projects.
A PM motor (such as the TBVF series) maintains high efficiency even at half-load or variable speeds, which reduces operational energy overhead compared to standard induction motors when the pump demand fluctuates.
Wolong manufactures motors matching globally recognized standards. Our dual-rated voltage windings and specialized terminal box configurations fit standard voltage setups worldwide (50Hz / 60Hz, 380V up to 10kV).
Browse our explosion-proof, high-efficiency, and high-voltage three-phase motor catalog.
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