# SealMaster TB-20 700874 Tap-Based Mounted Bearing 1.25" Bore Set Screw Lock Cast Iron - MROSupply.com ***SealMaster TB-20 700874 is a 1.25" bore tap-based mounted bearing from the Gold Line. It features a cast iron tapped base pillow block housing, a 52100 bearing steel insert with black oxide coating, set screw locking, and a felt-labyrinth seal. This unit is pre-lubricated for general industrial applications requiring a compact, base-mounted bearing.*** ## Product details: - Catalog number: 700874 - SKU: 2259596 - Price: ***$204.97*** Each - Shipping: ***FREE SHIPPING*** ON ORDERS OVER $100 - Typically Ships in: 1 day - Brand: [SealMaster](https://www.mrosupply.com/brands/sealmaster/) - Category: - [Tap Based Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-ball-bearings/tap-based-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: 4.350 lb - UPC: 662461007211 - Technicall support: contact supplier for technical support on 800-626-2120 ## Product images: - https://static.mrosupply.com/images/noimage.webp ## Product attributes; - Ability to Relubricate: Yes - Base Length (in): 4.25 - Base to Center Height (in): 1.875 - Base Width (in): 1.75 - Bearing Insert Finish: Black Oxide - Bearing Insert Material: 52100 Bearing Steel - Bearing Type: Standard Duty - Bolt Spacing (in): 3.25 - Bore Diameter (in): 1.25 - Bore Shape: Straight - Cage Material: PPS - Polyphenylene Sulfide - Cage Type: Land Riding Retainer - Centerline to Outermost Bearing Face (in): 1 - Dynamic Load Rating (lb): 5782 - End Cap: No - Fixed vs. Expansion: Fixed - Grease Fitting Thread Size: 1/4-28 - Height: 5 - Housing: Pillow Block, Tapped Base - Housing Base: Solid - Housing Coating: Powder Coated - Housing Color: Black - Housing Construction: One Piece - Housing Material: Cast Iron - Housing Style: Pillow Block - Housing Width (in): 1.88 - Inner Race Heat Treat Method: Zone-Hardened - Inner Ring OD (in): 1.859 - Insert: 2-14 - Length: 5 - Length Through Bore (in): 1.688 - Lubricant: Lithium Complex NLGI 2 Grease - Max Operating Temperature (F): 220 - Maximum Speed (RPM): 4650 - Misalignment Capability: ±2.0° Misalignment - Static Only - Misalignment Type: Static Only - Outer Ring Land Profile: Standard - Overall Height (in): 3.75 - Overall Length (in): 4.41 - Overall Width (in): 1.88 - Radial Clearance: Standard - Rolling element: Ball Bearing - Seal: Felt Labyrinth Seal - Shaft Locking Type: Set Screw - Size Code: 2-17 - Static Load Rating (lb): 3493 - Thread Depth (in): 0.75 - Thread Size: 1/2-13 - Width: 2 ## Product documents / software: - [Catalog Page](https://documents.mrosupply.com/product_documents/TB/TB-204C/MCC12004E_Sec_G-47.pdf) - [Drawing](https://documents.mrosupply.com/product_documents/TB/TB-204C/TB.GIF) ## Alternate products to `SealMaster TB-20 700874 Tap-Based Mounted Bearing 1.25" Bore Set Screw Lock Cast Iron - MROSupply.com`: - [Dodge 124470 TB-SC-104 tapped-base pillow block bearing with 1-1/4" bore (31.75mm), 65-degree set screw locking, 207 series ball bearing insert, cast iron housing, DualGuard seal, 3500 RPM rated, non-expansion configuration.](https://www.mrosupply.com/products/125202/as-markdown/) - [AMI UCTB207-20 tapped base pillow block bearing with 1-1/4" bore, set-screw locking, and wide inner ring. Cast iron housing with chrome steel insert for normal duty applications in industrial machinery and conveyor systems.](https://www.mrosupply.com/products/16700/as-markdown/) - [IPTCI UCPA207-20 2-Bolt Pillow Block Set Screw mounted ball bearing unit with 1-1/4" bore. Tapped base housing with set screw locking. Wide inner race insert. Standard lip seal. Cast iron housing suitable for light-to-medium duty shafting applications.](https://www.mrosupply.com/products/217404/as-markdown/) - [Browning VTBS-220 767461 take-up mounted ball bearing with a 1.25-inch bore and set screw locking. Cast iron housing, 52100 bearing steel inner ring with black oxide coating, and a single lip contact seal with flinger. Designed for belt conveyor tensioning applications, this unit pairs with a Browning take-up frame of matching shaft size. Genuine Browning from Regal Rexnord.](https://www.mrosupply.com/products/2272520/as-markdown/) - [Timken STB1 1/4 is a two-bolt pillow block housed unit with a ball bearing insert. Designed for general industrial applications such as conveyors, fans, and light-duty machinery, this unit features a cast iron housing and setscrew shaft locking. The pre-lubricated, relubricatable ball bearing insert provides reliable service in moderate load and speed conditions.](https://www.mrosupply.com/products/5079810/as-markdown/) ## Product's reviews: - Solutions - Fast service, and excellent competitive price. - Drum bearing - Very easy to order, arrived very quickly, We will be ordering more items from here in the future. - Response - Very knowledgeable sales rep. Excellent delivery time. Very important when supply chains are challenging. - Excelent - excelent ## 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.