# Rollway 3211 Angular Contact Ball Bearing | MROSupply.com - MROSupply.com ***Rollway 3211 55 mm Bore Size, 100 mm Outside Diameter, Angular Contact Ball Bearing, Double Row, Straight Bore, 52100 Bearing Steel, Normal Radial Clearance*** ## Product details: - Catalog number: 3211 - SKU: 2889764 - Price: ***$139.08*** Each - Quantity: This product has a minimum order quantity of 100. This is the minimum order quantity available when purchasing this product. - Shipping: ***FREE SHIPPING*** ON ORDERS OVER $100 - Typically Ships in: 1 day - Brand: [Rollway](https://www.mrosupply.com/brands/rollway/) - Category: - [Double Row Angular Contact Bearings](htts://www.mrosupply.com/bearings/ball-bearings/angular-contact-ball-bearings/double-row-angular-contact-bearings/) - [Angular Contact Ball Bearings](htts://www.mrosupply.com/bearings/ball-bearings/angular-contact-ball-bearings/) - [Ball Bearings](htts://www.mrosupply.com/bearings/ball-bearings/) - [Bearings](htts://www.mrosupply.com/bearings/) - Unit of measure: each - Weight: 2.154 lb - UPC: 637410095250 - Returns: Yes - Technicall support: contact supplier for technical support on 800-626-2120 ## Product images: - https://static.mrosupply.com/images/noimage.webp ## Product attributes; - Bore: 2.165 - Bore Size (mm): 55 - Bore Type: Straight - Cage Material: Steel - Contact Angle: 30° - Duplexing: No - Dynamic Load Rating (kN): 54 - Dynamic Load Rating (lb): 12140 - Full Complement/Caged: Caged - Height: 3.94 - Length: 3.94 - Material: 52100 Bearing Steel - Misalignment: No - Number of Rows: 2 - O.D. (mm): 100 - Overall Width (in): 1.311 - Overall Width (mm): 33.3 - Platform: Double Row Angular Contact Ball Bearing - Radial Clearance: Normal - Rolling Element: Ball - Seal Type: Unsealed - Sealed: None - Series: 3200 - Speed (Max) Grease (rpm): 4300 - Speed (Max) Oil (rpm): 5600 - Static Load Rating (kN): 55 - Width: 1.31 ## Product documents / software: - [Catalog](https://documents.mrosupply.com/product_documents/23/00/2300854/Rollway_1200_Catalog.pdf) - [Catalog Page](https://documents.mrosupply.com/product_documents/32/3211/MCC11019E_p148_KQhjuAf.pdf) - [Instruction Sheet](https://documents.mrosupply.com/product_documents/33/3315/Form_9728E_oNz6WC7.pdf) - [Specification Sheet](https://documents.mrosupply.com/product_documents/28/89/2889751/Rollway_3207_Specification_Sheet_6x8qM6i.pdf) ## Alternate products to `Rollway 3211 Angular Contact Ball Bearing | MROSupply.com - MROSupply.com`: - [Nachi Bearing 5211 Double Row Angular Contact Ball Bearing Open 20](https://www.mrosupply.com/products/208286/as-markdown/) - [SKF 3211 A 55mm bore double-row angular contact ball bearing with a 30° contact angle and sheet metal cage. Designed to accommodate combined radial and axial loads in both directions, it is suitable for pumps, gearboxes, and industrial machinery.](https://www.mrosupply.com/products/315815/as-markdown/) - [NSK 3211J double-row angular contact ball bearing with 55 mm bore. It features a pressed steel cage and is open (unsealed). This bearing carries combined radial and axial loads in both directions, making it suitable for pumps and machine tools.](https://www.mrosupply.com/products/5032582/as-markdown/) - [SKF 3211 E is a 55mm bore double-row angular contact ball bearing with enhanced capacity (E design). It carries combined radial and axial loads in both directions. Suitable for pumps, gearboxes, and industrial machinery.](https://www.mrosupply.com/products/2069151/as-markdown/) - [FAG 3211-BD double row angular contact ball bearing with 55mm bore and 100mm OD. Features a 40° contact angle for high axial load capacity in both directions. Suitable for applications requiring rigid bearing arrangements.](https://www.mrosupply.com/products/2174428/as-markdown/) - [NTN 3211 double-row angular contact ball bearing with a 55 mm straight bore. This open bearing accommodates combined radial and axial loads in compact applications such as pumps, compressors, and gearboxes.](https://www.mrosupply.com/products/284188/as-markdown/) - [NSK 5211J double-row angular contact ball bearing with 55 mm bore. It features a pressed steel cage and is open (unsealed). This bearing carries combined radial and axial loads in both directions, making it suitable for pumps and machine tools.](https://www.mrosupply.com/products/5032958/as-markdown/) - [NTN 5211 double-row angular contact ball bearing with a 55 mm straight bore. Open design with no seals or shields. Suitable for applications requiring high axial load capacity in both directions, such as pumps and gearboxes.](https://www.mrosupply.com/products/284081/as-markdown/) ## FAQ: - How do I choose the right type of bearing for my application?: Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints. For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials. In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design. - What is the difference between deep groove and angular contact ball bearings?: Deep groove ball bearings are the most common type. They’re designed to handle mainly radial loads, but they can also take some axial load in both directions. They’re simple, versatile, and used in everything from motors to conveyors. Angular contact ball bearings are built for combined loads, especially where there’s significant axial force in one direction. They’re often used in pairs and are common in higher precision or higher load applications like pumps and gearboxes. If your load is mostly radial, go deep groove. If axial load matters more, angular contact is usually the better choice.