This cold-start difficulty not only wastes working hours, but repeated forced starts also accelerate wear on hydraulic components. As the core drive component of hydraulic systems, the cold-weather adaptability of hydraulic motor orbital units directly impacts equipment operational efficiency during winter. HANJIU Technology has implemented systematic optimizations for low-temperature conditions, enabling equipment to start reliably even in severe cold.
Difficulties in starting hydraulic motors in low-temperature environments fundamentally stem from increased hydraulic oil viscosity. As temperatures drop, hydraulic oil becomes less fluid, with viscosity significantly rising, thereby increasing flow resistance within pipelines and motor internals. Concurrently, clearance between moving components inside the motor changes at low temperatures; overly tight fits further elevate starting resistance. Furthermore, seal materials harden and lose elasticity at low temperatures, compromising sealing effectiveness while also increasing friction resistance. According to relevant testing standards, the no-load starting torque of a hydraulic motor should reach at least 85% of its rated value at -20°C. This metric directly reflects the motor's low-temperature starting capability.
In addition to starting difficulties, low temperatures can also affect the operational reliability of hydraulic motors in other ways. Excessively high oil viscosity can cause insufficient oil intake by the pump, leading to intermittent oil supply to the motor. Moisture in the oil may freeze at low temperatures, clogging filters or narrow oil passages. Prolonged operation in cold conditions without adequate preheating accelerates internal motor wear, shortening its service life. Therefore, selecting a hydraulic motor with excellent low-temperature adaptability is crucial for winter operations in northern regions.
HANJIU's series of hydraulic orbital motors feature multiple optimizations for low-temperature adaptability. In product design, HANJIU motors employ a rational clearance design that ensures normal operating performance while reserving adequate margin for low-temperature conditions, preventing jamming caused by material contraction. The sealing system utilizes low-temperature resistant materials, with critical areas employing specialized oil seals like cyanide-cured nitrile rubber. These maintain excellent elasticity and sealing performance even in cold conditions. The rotor-stator assembly is constructed from high-strength alloy steel, enabling resistance to initial wear even under poor lubrication conditions during cold starts.
For equipment already in operation, HANJIU Technology also provides professional winter usage recommendations. Before winter begins, replace the hydraulic oil with a low-viscosity grade suitable for local temperatures to reduce flow resistance during cold starts. Perform multiple short-cycle operations before startup to allow the motor to rotate slowly, gradually establishing a lubricating oil film. Only engage the load once the system temperature has slightly increased. For equipment operating long-term in extremely cold regions, consider installing tank heating devices or using heating cables to preheat critical hydraulic components. HANJIU can also provide customized low-temperature solutions based on specific operating conditions, including special seal material selection and optimized clearance adjustments.
HANJIU Technology not only prioritizes product quality but is also committed to providing comprehensive technical support for users. Whether it's standard models or custom low-temperature versions, HANJIU ensures reliable performance across diverse environments. HANJIU's hydraulic orbital motors deliver dependable low-temperature starting capabilities through optimized design, reliable material selection, and stringent quality control. Choose HANJIU to ensure your equipment starts smoothly even in extreme cold.
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