# Rexnord KEF2300 3" Mounted Spherical Roller Bearing, Cast Iron 4-Bolt Square Flange Block, Single Setscrew Locking Collar, Single Lip Light Contact Seal - MROSupply.com ***Rexnord KEF2300 3" mounted spherical roller bearing with cast iron 4-bolt square flange block, single setscrew locking collar, and single lip light contact seal. Designed for normal duty applications requiring reliable shaft support and misalignment accommodation.*** ## Product details: - Catalog number: 10412940 - SKU: 502995 - Price: ***$1,137.08*** Each - Shipping: ***FREE SHIPPING*** ON ORDERS OVER $100 - Typically Ships in: 1 day - Brand: [Rexnord](https://www.mrosupply.com/brands/rexnord/) - Category: - [2-Bolt Flange](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-ball-bearings/flanged-mounted-bearings/2-bolt-flange/) - [Flanged Mounted Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-ball-bearings/flanged-mounted-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: 26.900 lb - UPC: 698210828363 - 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 - Available end cap: DTC9 - Available End Cap: DTC9 - Available Seal Type: K Light Contact Lip Seal; M Spring Loaded Heavy Contact Lip Seal (Buna and Viton); Z Clearance Seal; G Triple Lip - Bearing Brand: REX ROLLER BEARING - Bolt circle radius (in): 4 1/4 in - Bolt Circle Radius (in): 4 1/4 in - Bolt hole circle diameter (in): 8 1/2 in - Bolt Hole Circle Diameter (in): 8 1/2 in - Bolt Size (in): 3 in - Bore length (in): 4 in - Bore Length (in): 4 in - Bore size (in): 3 in - Bore Size (in): 3 in - Cage Material: Engineered Polymer - Clearance: C3 STANDARD - Distance between bolt holes (in): 6 in - Distance Between Bolt Holes (in): 6 in - Fixed vs. Expansion: Fixed - Foot Height (in): 1.78 - Grease Fitting Thread Size: 1/8 NPT - Height: 8.63 - Housing Cast Face to Outermost Bearing Face (in): 0.88 - Housing coating: Powder coated - Housing Coating: POWDER COATED - Housing construction: Solid - Housing Construction: Solid - Housing height (in): 4.22 - Housing material: Cast iron - Housing Material: Cast Iron - Housing style: Flange block - Housing Style: Flange Block - Housing type: Flange, Four Bolt - Housing Type: Flange, Four Bolt - Housing width (in): 7.75 - Inner Ring Outside Diameter (in): 3.37 - Insert: 2300U - Length: 8.63 - Locking collar outside diameter (in): 4.06 - Locking device kit: SC9 - Locking Device Kit: SC9 - Locking Type: Single Set Collar - Lubrication type: EXXON RONEX MP STD - Lubrication Type: EXXON RONEX MP STD - Maximum Speed (RPM): 1900 rpm - Maximum Temperature (C): 107 - Maximum Temperature (F): 225 - Microlock kit: ML3 - Misalignment Capability: ±2.0° Misalignment - Dynamic - Misalignment Type: Dynamic - Mounting bolt size (in): 3/4 in - Mounting Bolt Size (in): 3/4 in - Net Weight: 26.90 - Overall Length (in): 7.75 - Overall width: 7.75 - Primary seal: BUNA SGL lip light contact - Primary Seal: BUNA SGL LIP LIGHT CONTACT - Radial Dynamic Load Capacity (lb): 57750 lb - Radial Static Load Capacity (lb): 71500 lb - Retainer material: Engineered Polymer - Retainer Material: Engineered Polymer - Rolling element: Spherical Roller - Seal kit: KS9 - Seal type: Light Contact Seal - Setscrew torque (in-lbs): 680 - Size code: 9 - Size Code: 9 - Standoff distance (in): 0.19 - Unit of dimension: in - Unit of Dimension: IN - Vibration frequency fundamental train: 0.0072 cps - Vibration Frequency Fundamental Train: 0.0072 cps - Vibration frequency inner ring defect: 0.1701 cps - Vibration Frequency Inner Ring Defect: 0.1701 cps - Vibration frequency outer ring defect: 0.1299 cps - Vibration Frequency Outer Ring Defect: 0.1299 cps - Vibration frequency roller spin: 0.0591 cps - Vibration Frequency Roller Spin: 0.0591 cps - Volume: 0.048 - Volume unit: Hectoliter - Volume Unit: Hectoliter - Weight unit: LB - Width: 3.94 ## Product documents / software: - [Rex Mounted Roller Bearings Installation Instructions](https://documents.mrosupply.com/product_documents/23/63/2363892/6ddc7fe1403d4227d36d1cb21d07ffff0b45a555_lA7yTlb.pdf) - [Rex Mounted Roller Bearings Installation Instructions](https://documents.mrosupply.com/product_documents/85/76/857687/BR3-001_manual.pdf) - [Rexnord Bearings Catalog](https://documents.mrosupply.com/product_documents/58/93/5893723/5c878e5c94dc5c3d338a775129f99b4f092be791_xnS4NzU.pdf) - [Rexnord Bearings Catalog](https://documents.mrosupply.com/product_documents/85/80/858069/BR101-100EN_catalog.pdf) ## Product's reviews: - Jose - Really good customer service - Good orice - This stump grinder wheel bearing is expensive and I need two each time I change them. Best price I found anywhere and free shipping here at MRO Supply - Good - Good - Falk ltg - Fast convenient shopping. Highly recommend. Prompt shipping. 👍🏼 ## 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.