# Rex MAF6307F 3-7/16" Mounted Spherical Roller Bearing, Cast Iron Fixed 4-Bolt Pillow Block, Shurlok Adapter Mounted, Spring Loaded Heavy Contact Seal - MROSupply.com ***Rex MAF6307F mounted spherical roller bearing with 3-7/16" (87.31 mm) bore, cast iron fixed 4-bolt pillow block housing, Shurlok adapter mounting system, and spring-loaded heavy contact seal for normal duty applications.*** ## Product details: - Catalog number: 10435141 - SKU: 503757 - Price: ***$1,481.88*** Each - Shipping: ***FREE SHIPPING*** ON ORDERS OVER $100 - Typically Ships in: 1 day - Brand: [Rexnord](https://www.mrosupply.com/brands/rexnord/) - Category: - [4-Bolt Pillow Block Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-roller-bearings/pillow-block-bearings/4-bolt-pillow-block-bearings/) - [Pillow Block Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-roller-bearings/pillow-block-bearings/) - [Mounted Roller Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-roller-bearings/) - [Mounted Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/) - [Bearings](htts://www.mrosupply.com/bearings/) - Unit of measure: each - Weight: 75.000 lb - UPC: 793699901399 - 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: Need EXT EC - Available End Cap: NEED EXT EC - Available Seal Type: K Light Contact Lip Seal; M Spring Loaded Heavy Contact Lip Seal (Buna and Viton); Z Clearance Seal; G Triple Lip - Base Length (in): 15.38 - Base to centerline height (in): 4.5 - Base Width (in): 4.34 - Bearing Brand: REX ROLLER BEARING - Bolt Hole Spacing [Width] (in): 2.38 - Bolt Size (in): 3/4 - Bore size (in): 3.4375 in - Bore Size (in): 3.4375 in - Cage Material: Engineered Polymer - Clearance: C3 STANDARD - Fixed vs. Expansion: Fixed - Foot Height (in): 1.66 - Grease Fitting Thread Size: 1/8 NPT - Height: 9.88 - Housing Cast Face to Outermost Bearing Face (in): 1.59 - Housing coating: Powder coated - Housing Coating: POWDER COATED - Housing Color: Black - Housing construction: Solid - Housing Construction: Solid - Housing material: Cast iron - Housing Material: Cast Iron - Housing style: Pillow block - Housing Style: Pillow Block - Housing type: Pillow Block, Four Bolt, SAF Style - Housing Type: Pillow Block, Four Bolt, SAF Style - Impact style shurlok install tool: 105-90425-51 - Impact Style Shurlok Install Tool: 105-90425-51 - Inner Ring Outside Diameter (in): 3.975 - Insert: 6307U - Length: 17.50 - Length Through Bore (in): 5.03 - Locking collar outside diameter (in): 4.95 - Locking device kit: AK106307 - Locking Device Kit: AK106307 - Locking Type: Tapered Adapter - Lubrication type: EXXON RONEX MP STD - Lubrication Type: EXXON RONEX MP STD - Max distance between bolt holes (in): 13.13 - Maximum Speed (RPM): 1400 rpm - Maximum Temperature (C): 107 - Maximum Temperature (F): 225 - Microlock kit: ML4 - Min distance between bolt holes (in): 11.63 - Misalignment Capability: ±2.0° Misalignment - Dynamic - Misalignment Type: Dynamic - Net Weight: 75.00 - Overall Length (in): 15.38 - Overall width: 5.03 - Primary seal: Buna spring loaded lip seal - Primary Seal: BUNA SPRING LOADED LIP SEAL - Radial Dynamic Load Capacity (lb): 84330 lb - Radial Static Load Capacity (lb): 90700 lb - Retainer material: Engineered Polymer - Retainer Material: Engineered Polymer - Rolling element: Spherical Roller - Seal kit: MS10 - Seal type: Heavy Contact Seal - Series: Solid-housed Pillow Blocks - Setscrew torque (in-lbs): 165-185 - Shaft locking collar kit/adapter assembly: AK106307 - Shaft Locking Collar Kit/Adapter Assembly: AK106307 - Size code: 10 - Size Code: 10 - Slot Length (in): 1.56 - Unit of dimension: in - Unit of Dimension: IN - Vibration frequency fundamental train: 0.0073 cps - Vibration Frequency Fundamental Train: 0.0073 cps - Vibration frequency inner ring defect: 0.1784 cps - Vibration Frequency Inner Ring Defect: 0.1784 cps - Vibration frequency outer ring defect: 0.1383 cps - Vibration Frequency Outer Ring Defect: 0.1383 cps - Vibration frequency roller spin: 0.0628 cps - Vibration Frequency Roller Spin: 0.0628 cps - Volume: 4.769 - Volume unit: GLL - Volume Unit: GLL - Weight unit: LB - Width: 6.38 ## Product documents / software: - [Rex 6000 Series Roller Bearings](https://documents.mrosupply.com/product_documents/10/105-90420-41/000-Series-Roller-Bearings_Installation-Manual_d41RbjE.pdf) ## Product's reviews: - Good - On time good - 1st timer - 1st purchase with MRO good product selection at best price. Will check in for my next purchase. - Excellent - very fast, very good!!! A+++ - 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 ## 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.