# MRC (SKF) 5309M Double Row Angular Contact Ball Bearing - 45mm Bore, Open, Metal Cage - MROSupply.com ***MRC (SKF) 5309M double row angular contact ball bearing with 45mm bore, 3.937" OD, open enclosure, and metal cage. Designed for combined radial and axial loads in industrial applications. A reliable SKF aftermarket replacement.*** ## Product details: - Catalog number: 5309M - SKU: 1133147 - Price: ***$201.13*** Each - Shipping: ***FREE SHIPPING*** ON ORDERS OVER $100 - Typically Ships in: 1 day - Brand: [MRC Bearing](https://www.mrosupply.com/brands/mrc-bearing/) - Category: - [2-Bolt Pillow Block Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-ball-bearings/pillow-block-bearings/2-bolt-pillow-block-bearings/) - [Pillow Block Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-ball-bearings/pillow-block-bearings/) - [Mounted Ball Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-ball-bearings/) - [Mounted Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/) - [Bearings](htts://www.mrosupply.com/bearings/) - Unit of measure: each - Weight: 3.041 lb - Technicall support: contact supplier for technical support on 888 753 3477 ## Product images: - https://static.mrosupply.com/images/noimage.webp ## Product attributes; - Bearing Type: Angular Contact - Cage: Metal - Enclosure: Open - I.D.: 1.772 - Locking: None - O.D.: 3.937 ## Product documents / software: - [5000M series](https://documents.mrosupply.com/product_documents/53/5308%20MFG/Type5000M.pdf) - [Drawing](https://documents.mrosupply.com/product_documents/52/5200SB/d_fafn_5200_R15751.jpg) - [Engineering Handbook](https://documents.mrosupply.com/product_documents/10/100KSF/engineering_handbook.pdf) - [Installation](https://documents.mrosupply.com/product_documents/10/100KSF/installation.pdf) - [Interchange](https://documents.mrosupply.com/product_documents/10/100KSF/INTERCHANGE.pdf) - [Lubrication](https://documents.mrosupply.com/product_documents/10/100KSF/lubrication.pdf) ## Alternate products to `MRC (SKF) 5309M Double Row Angular Contact Ball Bearing - 45mm Bore, Open, Metal Cage - MROSupply.com`: - [SKF 3309 A/C3 double-row angular contact ball bearing, 45mm bore, 30° contact angle, C3 clearance. Sheet metal cage, bearing steel construction. Accommodates combined radial and axial loads in both directions for pumps, gearboxes, and industrial machinery.](https://www.mrosupply.com/products/315821/as-markdown/) - [Koyo 5309 double-row angular contact ball bearing with a 45 mm bore, 100 mm outside diameter, and 39.7 mm width. Open type design with straight bore. Suitable for applications requiring combined radial and axial loads in both directions.](https://www.mrosupply.com/products/1494553/as-markdown/) - [SKF 3309 E/C3 is a 45mm bore double-row angular contact ball bearing with C3 clearance and an enhanced steel cage. Designed to carry combined radial and axial loads in both directions, it is suitable for pumps, gearboxes, and industrial machinery.](https://www.mrosupply.com/products/2069102/as-markdown/) - [Rollway 3309 C3 45 mm Bore Size, 100 mm Outside Diameter, Angular Contact Ball Bearing, Double Row, Straight Bore, 52100 Bearing Steel, C3 Radial Clearance](https://www.mrosupply.com/products/2889815/as-markdown/) - [NTN 3309C3 is a 33 series double-row angular contact ball bearing with a 45 mm straight bore. Open type with C3 clearance. Designed for combined radial and axial loads in gearboxes, pumps, and industrial machinery.](https://www.mrosupply.com/products/281547/as-markdown/) - [NSK 5309C3 double-row angular contact ball bearing with 45 mm bore and C3 clearance. This bearing carries combined radial and axial loads in both directions, making it suitable for pumps and machine tools. Backed by NSK's precision-bearing engineering heritage.](https://www.mrosupply.com/products/5033062/as-markdown/) - [NTN 5309C3 double-row angular contact ball bearing with 45 mm straight bore, open enclosure, and steel cage. Designed for combined radial and axial loads in industrial gearboxes, pumps, and compressors. C3 clearance accommodates thermal expansion and high-speed operation.](https://www.mrosupply.com/products/280999/as-markdown/) - [NSK 5309JC3 double-row angular contact ball bearing with 45 mm bore and C3 clearance. The pressed steel cage and open design suit moderate-speed applications. This bearing carries combined radial and axial loads in both directions, making it suitable for pumps and machine tools.](https://www.mrosupply.com/products/5033064/as-markdown/) ## Product's reviews: - Motor bearings - Of all the bearings I have purchased in the last 45 years, these look to be top quality. - Great bearings, great price! - I am rebuilding an old Delta/Rockwell drill press and was having trouble finding the correct replacement bearings at a reasonable price from my usual go-to online dealers; from those that even had them available. Shipping times where reasonable. Competitively priced at time of purchase. Stock status was available, had to use contact link to make sure they were available to ship. Would be very nice if real-time in-stock status could be available while hunting down need parts, but in the long run it's not that big of deal. The stock status email back following the inquire was quick with a quoted price and purchase link. ## 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.