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By optimizing the internal structure, stress concentration is reduced,
the risk of sudden failure is lowered, and driving safety is ensured.
NSK bearings are core transmission components specially designed for high-speed trains, freight locomotives and urban rail transit systems. They can operate stably under complex working conditions such as high speed, heavy load and strong vibration. Widely used in key parts of railway vehicles including traction motors, gearboxes and wheelset axle boxes, they provide reliable assurance for the safe, efficient and long-life operation of trains.
Ultra-high wear resistance and long service life
Made of high-quality high-strength steel with high hardness, impact resistance and wear resistance, it features an extended service life. In practical applications of railway wheelset axle boxes, it achieves ultra-long mileage without major overhauls. Compared with ordinary bearings, it significantly reduces replacement frequency, greatly cuts operation and maintenance costs, and lowers the risk of train downtime.
High Load Capacity and Impact Resistance
Featuring an optimized internal geometry, the bearing can withstand radial loads and bidirectional axial loads at the same time.When subjected to instantaneous impact loads generated by rail joints, turnouts and other track components, it ensures uniform stress distribution inside the bearing.Capable of enduring high-intensity dynamic loads, it guarantees stable operation of trains under complex track conditions.
High Speed, Low Noise, Energy Saving & High Efficiency
Precision grinding of the raceways and ultra-clean steel ball processing result in an extremely low friction coefficient during high-speed operation.When applied to traction motors, the bearing supports an ultra-high limiting speed, while maintaining excellent low noise levels.This effectively improves transmission efficiency and reduces the energy consumption of trains.
To address the issue of electrical corrosion caused by electric current passing through bearings in traction motors, ceramic or resin insulation coatings are available as options. These effectively block the current path and prevent electrical corrosion pits on the raceway surfaces. This design extends the service life of bearings in motor applications and significantly improves system reliability.
Traction Motor
As the core supporting component of the motor rotor, it withstands alternating loads generated by high-speed rotation, ensuring stable power output of the motor under train operating conditions such as starting, acceleration and braking.
Wheelset Axle Box
Supports the wheelset, bears the full vehicle weight and impact loads from the track, serving as a key component to guarantee the safety and stability of train operation.
Gearbox
Used for the input and output shafts of gearboxes to transmit power and withstand complex impact loads. Widely applied in locomotives, EMUs and urban rail vehicles.
Can this bearing operate normally in extremely cold regions?
Yes. This bearing uses low-temperature resistant grease, which maintains excellent lubrication performance and mechanical strength in low-temperature environments, fully meeting the requirements of railway operation in frigid regions.
What are the precautions for bearing installation?
It is strictly forbidden to strike the bearing directly with a hammer to avoid internal damage. It is recommended to heat the bearing with a professional bearing heater and then press-fit it using the principle of thermal expansion and contraction to ensure fitting accuracy.
