7200B Series Rubber Sealed Angular Contact Ball Bearings

Rubber Sealed Angular Contact Bearings Key Feature

Superior Axial Load Capacity:With a 40° contact angle (Type B), this bearing is engineered to handle heavy unidirectional axial loads, as well as combined loads where axial forces dominate.

High Rigidity:The large contact angle ensures outstanding axial rigidity, reducing deformation under load and helping maintain system precision.

Effective Sealing:Dual rubber seals (2RS) provide reliable performance in dusty, humid, or contaminated environments, keeping the interior clean and protected.

Maintenance-Free & Long Lifespan:Factory-lubricated with high-quality grease and permanently sealed, these bearings require no relubrication - simplifying design and cutting maintenance costs.

Ready to Install:Fully sealed and pre-lubricated, the bearing allows for quick and straightforward installation with no additional preparation.

Speed Limitation:Due to the contact seals (RS), operating friction and temperature are higher than in open or shielded (ZZ) bearings, resulting in a relatively lower maximum speed - a trade-off for the superior sealing performance.

Rubber Sealed Angular Contact Bearings Application Fields
The characteristics of the 7200B 2RS make it well-suited for a variety of small to medium-sized, medium-to-low speed applications that demand high axial rigidity and effective sealing:

Automotive Sector: Clutch release bearings, turbochargers, water pumps, transmissions, and more.

Industrial Motors: Especially vertical motors, variable-frequency motors, and other applications requiring axial load capacity and maintenance-free operation.

Home Appliances: Drum spindles in high-end washing machines, dishwasher pumps, vacuum cleaners, etc.

Agricultural Machinery: Transmission components in tractors, harvesters, and other equipment operating under harsh environmental conditions where sealing is critical.

General Machinery: Gearboxes, reducers, pumps, and other rotating assemblies subject to axial loads and requiring reliable sealing.

Hangzhou Changer Bearing Co., Ltd.

Established in 2013, is a professional supplier engaged in the research, development, sale and service of ball bearings, needle roller bearing, linear bearing, pillow block bearing, plastic bearing, ceramic bearing, bushing, pulley, gear motors, power transmission. We are located in Hangzhou City with convenient transportation access, near Shanghai and Ningbo seaport.

Under strict quality control of ISO9001 system, our experienced staff can discuss your requirement in details and make you satisfied. Our products are also obtained CE, RoHS certificate.

 

Our factory & Quality control

 

Strict Product Quality Inspection

FQC

Accuracy Measuring

Roughness Profile Tester

Automatic image measuring

Selection and Usage Guidelines

For optimal performance with the 7200B 2RS bearing, observe these key points:

Mounting Configuration
Angular contact bearings require paired mounting for bidirectional loads or stable support. Standard arrangements:

Back-to-Back (DB): Maximum moment rigidity

Face-to-Face (DF): Accommodates shaft misalignment

Tandem (DT): Handles heavy unidirectional loads

Single Bearing: Unidirectional loads only. Force must align with contact angle direction.

Preload Requirements
Preload eliminates internal clearance, enhancing rigidity and accuracy. While factory-set for standard use, precision applications may require adjustment.

Operating Limits

Speed: 2RS seals reduce maximum speed to 60-70% of open bearings.

Temperature: Limited by seal and grease materials (typically -30°C to +120°C).

Lubrication: Pre-lubricated for life, but extreme conditions may require relubrication strategy.

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