# Rex MA2300G 3" Mounted Spherical Roller Bearing, 2000 Series Normal Duty, Fixed Cast Iron 2-Bolt Pillow Block, Single Setscrew Locking Collar, Spring-Loaded Heavy Contact Seal - MROSupply.com ***Rex MA2300G 2000 series normal duty mounted spherical roller bearing with 3 in (76.2 mm) bore. Fixed cast iron 2-bolt pillow block housing, single setscrew locking collar, spring-loaded heavy contact lip seal. Type E bearing for industrial shaft support and self-alignment.*** ## Product details: - Catalog number: 10419805 - SKU: 504059 - Price: ***$1,126.97*** Each - Shipping: ***FREE SHIPPING*** ON ORDERS OVER $100 - Typically Ships in: 1 day - Brand: [Rexnord](https://www.mrosupply.com/brands/rexnord/) - Category: - [2-Bolt Pillow Block Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-roller-bearings/pillow-block-bearings/2-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: 25.600 lb - UPC: 698210943981 - 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 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): 10.44 - Base to centerline height (in): 3 1/4 in - Base to Centerline Height (in): 3 1/4 in - Base Width (in): 3.19 - Bearing Brand: REX ROLLER BEARING - 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): 8 1/8 in - Distance Between Bolt Holes (in): 8 1/8 in - Distance from housing cast face to inner ring long hub face (in): 7/8 in - Distance from Housing Cast Face to Inner Ring Long Hub Face (in): 7/8 in - Fixed vs. Expansion: Fixed - Foot Height (in): 2 - Grease Fitting Thread Size: 1/8 NPT - Height: 10.56 - Housing Cast Face to Outermost Bearing Face (in): 0.88 - 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, Two Bolt - Housing Type: Pillow Block, Two Bolt - Inner ring hub diameter (in): 3 3/8 in - Inner Ring Hub Diameter (in): 3 3/8 in - Inner Ring Outside Diameter (in): 3.37 - Insert: 2300UR - Length: 6.56 - Length Through Bore (in): 4 - Locking collar outside diameter (in): 4 1/16 in - Locking Collar Outside Diameter (in): 4 1/16 in - 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): 1700 rpm - Maximum Temperature (C): 107 C - Maximum Temperature (F): 225 F - Microlock kit: ML4 - Microlock Kit: ML4 - Misalignment Capability: ±2.0° Misalignment - Dynamic - Misalignment Type: Dynamic - Mounting bolt hole slot length (in): 1 1/8 in - Mounting Bolt Hole Slot Length (in): 1 1/8 in - Mounting bolt size (in): 3/4 in - Mounting Bolt Size (in): 3/4 in - Mounting pad height (in): 2 in - Mounting Pad Height (in): 2 in - Mounting pad length (in): 10 7/16 in - Mounting Pad Length (in): 10 7/16 in - Mounting pad width (in): 3 3/16 in - Mounting Pad Width (in): 3 3/16 in - Net Weight: 25.60 - Overall Length (in): 10.44 - Overall width: 3.75 - Primary seal: Buna spring loaded lip seal - Primary Seal: BUNA SPRING LOADED LIP SEAL - 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: MS9 - Seal Kit: MS9 - Seal type: Heavy Contact Seal - Seal Type: Heavy Contact Seal - Series: Solid-housed Pillow Blocks - Setscrew torque (in-lbs): 680 in/lbs - Setscrew Torque (in-lbs): 680 in/lbs - Size code: 9 - Size Code: 9 - 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: 1.275 - Volume unit: GLL - Volume Unit: GLL - Weight unit: LB - Width: 4.25 ## 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: - Great service - easy to do business with, competitive pricing, excellent service and quick shipping. - 1st timer - 1st purchase with MRO good product selection at best price. Will check in for my next purchase. - Rexnord idler pulley - Great pricing and fast shipping A +++++++++ - Excellent - very fast, very good!!! A+++ ## 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.