The self-aligning roller bearings used in elevators have the characteristics of automatic self-aligning, high load-bearing capacity, impact resistance, low noise, long life, and adaptability to complex working conditions. The specific analysis is as follows:
Automatic self-aligning performance
The self-aligning roller bearings adopt a double row roller design, with a shared spherical raceway on the outer ring and an inclination angle between the inner ring raceway and the bearing axis. This structure enables it to compensate for angular deviations caused by shaft bending or installation errors (usually allowing 1-2.5 degrees) by freely adjusting the rollers, ensuring stable operation and reducing faults caused by poor alignment.
High Load Capacity
The bearing design can withstand both radial and bidirectional axial loads, especially suitable for scenarios such as elevator traction machines that require heavy loads and impacts.
. The rollers are in linear contact with the raceway, with uniform stress distribution, capable of withstanding large loads, and the optimized structure (such as X-life design) further improves the rated dynamic load and service life.Resistance to impact and vibration
Symmetrical drum shaped rollers and optimized raceway fit enable the bearing to maintain stable performance even under impact loads during elevator start stop or operation, reducing wear and failure risks.
.Low noise and smooth operation
Elevators have high requirements for quietness. Through precision machining (such as ring and rolling surface roughness control) and optimized design, self-aligning roller bearings reduce operating vibration and noise, and improve ride comfort.
.Long life and reliability
The optimization of material selection (such as high-performance steel) and heat treatment processes has improved the wear resistance and fatigue resistance of bearings.
. At the same time, some models adopt a sealed design (such as built-in anti rust grease) to reduce lubricant leakage and external pollution, extending the service life.Adapt to complex working conditions
Temperature adaptability: Metal cage bearings can operate stably within the range of -30 ℃ to+200 ℃, meeting different environmental requirements.
.Installation convenience: Provides cylindrical and conical hole (taper 1:12 or 1:30) designs. The conical hole bearing can be matched with a tightening sleeve or a detachable sleeve, and can be quickly assembled on the optical axis or stepped axis, reducing installation difficulty.
.Lubrication flexibility: The outer ring can be designed with lubrication grooves and oil holes (such as the rear code/W33), supporting oil lubrication or grease lubrication to ensure reliable lubricant supply.
.Reinforcement of elevator specific standards
For elevator applications, bearings must meet strict standards, including vibration and noise levels, rotation accuracy, cage manufacturing standards, etc., to ensure long-term reliable operation in difficult to maintain or high shutdown cost scenarios (such as high-rise elevators).
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