High Load Tapered Roller Bearing 30202 With Good Rigidity / Accuracy Retention

30202 Tapered Roller Bearing: High Load & Precision Performance

I. Product Overview​

The 30202 tapered roller bearing occupies a key position in the field of mechanical transmission. With its unique design and excellent performance, it has become an important guarantee for the stable operation of many mechanical equipment. Its special structure endows the bearing with the ability to bear both radial load and unidirectional axial load, making it suitable for working conditions with high requirements on bearing capacity and operation accuracy. It is widely used in industries such as automobiles, machine tools, and construction machinery, and is one of the core components to ensure efficient and reliable operation of equipment.​

II. Structural Design​

1. Unique Cooperation between Rollers and Raceways: The 30202 tapered roller bearing is equipped with frustum-shaped rollers inside, and the rollers are precisely guided by the large rib of the inner ring. The vertices of the conical surfaces of the inner ring raceway surface, outer ring raceway surface, and roller rolling surface cleverly intersect at a point on the center line of the bearing. This exquisite design enables the rollers to achieve pure rolling on the raceway surface, and the force balance is achieved by the resultant force of the inner and outer ring raceway surfaces and the action and reaction force on the large rib of the inner ring. In practical applications, when the equipment operates with complex loads, this structure can effectively disperse stress, ensure the stable operation of the bearing, and reduce the risk of wear.​

2. Separable Inner and Outer Ring Structure: The bearing is of a structural type where the outer ring and inner ring assembly can be separated, which brings great convenience to installation and maintenance. During installation, the inner ring and outer ring can be installed separately, and the axial clearance and radial clearance can be flexibly adjusted to meet the needs of different working conditions. At the same time, both the inner and outer rings can be installed with interference fit to ensure that the bearing is closely matched with the shaft and bearing seat during high-load operation, avoiding looseness, and improving the operation accuracy and stability of the equipment.​

III. Dimensional Specifications​

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IV. Performance Advantages​

1. Strong Bearing Capacity: The 30202 tapered roller bearing has excellent bearing performance and can bear large radial load and unidirectional axial load. This is due to its unique roller and raceway design. The contact area between the roller and the raceway is large, which effectively disperses the load and improves the bearing capacity of the bearing. For example, in automobile transmissions, this bearing can stably bear the radial and axial forces generated by gear transmission, ensuring efficient and reliable operation of the transmission.​

2. Good Rigidity and Accuracy Retention: Since the rollers and raceways of tapered roller bearings are in line contact, they have higher rigidity compared with bearings with point contact. During operation, it can effectively suppress the deformation and vibration of the shaft and maintain high operation accuracy. In the application of precision machine tool spindles, this bearing can ensure precise cutting of tools and process high-precision parts.​

3. Adaptability to High-Speed Operation: Although tapered roller bearings are mainly designed to bear large loads, the 30202 model has been carefully optimized and can also adapt to high-speed operation within a certain range. By reasonably selecting materials, optimizing the structural design, and adopting advanced manufacturing processes, the internal friction and heat generation of the bearing are reduced, ensuring stable operation at higher speeds, reducing wear and fatigue caused by high speeds, and prolonging the service life.​

V. Application Fields​

1. Automobile Industry: In the automotive field, 30202 tapered roller bearings are widely used in front wheels, rear wheels, transmissions, differential pinion shafts and other parts. In the wheel part, it bears the radial road force when the vehicle is running and the axial force generated by steering and braking, ensuring the stable operation of the wheels; in the transmission and differential, it can cope with the complex loads caused by gear transmission, ensuring efficient and stable power transmission.​

2. Machine Tool Field: Machine tool spindles have high requirements on operation accuracy and rigidity. The 30202 tapered roller bearing, with its good rigidity and accuracy retention, has become an ideal choice for machine tool spindles. It can stably support the spindle during high-speed cutting, ensure precise positioning of tools, and process high-precision parts, meeting the needs of the machinery manufacturing industry for precision machining.​

3. Construction Machinery Field: Construction machinery such as cranes and excavators face complex and variable loads during work. The 30202 tapered roller bearing can bear the huge radial and axial loads generated during the operation of construction machinery, ensure the stable operation of key components of the equipment, and adapt to the harsh working environment and high-intensity operation requirements of construction sites.