# Rexnord MB2012 3/4" Mounted Spherical Roller Bearing, Fixed Cast Iron 3-Bolt Round Flange Block, Single Setscrew Locking Collar, Spring Loaded Heavy Contact Seal - MROSupply.com ***Rexnord MB2012 3/4 in mounted spherical roller bearing with a fixed cast iron 3-bolt round flange block. Features a single setscrew locking collar and a spring loaded heavy contact seal for reliable operation in industrial applications.*** ## Product details: - Catalog number: 10407840 - SKU: 504442 - Price: ***$1,566.45*** Each - Shipping: ***FREE SHIPPING*** ON ORDERS OVER $100 - Typically Ships in: 1 day - Brand: [Rexnord](https://www.mrosupply.com/brands/rexnord/) - Category: - [3-Bolt Flange](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-roller-bearings/flanged-mounted-bearings/3-bolt-flange/) - [Flanged Mounted Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-roller-bearings/flanged-mounted-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: 4.300 lb - UPC: 698210701925 - 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: DTC2 - Available End Cap: DTC2 - Available seal type: K Light Contact Lip Seal; M Spring Loaded Heavy Contact Lip Seal (Buna and Viton); Z Clearance Seal - Available Seal Type: K Light Contact Lip Seal; M Spring Loaded Heavy Contact Lip Seal (Buna and Viton); Z Clearance Seal - Bearing Brand: REX ROLLER BEARING - Bolt circle radius (in): 2 1/16 in - Bolt Circle Radius (in): 2 1/16 in - Bolt Size (in): 0.75 in - Bore length (in): 2 9/16 in - Bore Length (in): 2 9/16 in - Bore size (in): 0.75 in - Bore Size (in): 0.75 in - Cage Material: Engineered Polymer - Clearance: C3 STANDARD - Distance between bolt holes (in): 3 37/64 in - Distance Between Bolt Holes (in): 3 37/64 in - Distance from housing cast face to locking feature face (in): 9/16 in - Distance from Housing Cast Face to Locking Feature Face (in): 9/16 in - Fixed vs. Expansion: Fixed - Foot Height (in): 0.56 - Grease Fitting Thread Size: 1/8 NPT - Height: 3.25 - Housing Cast Face to Outermost Bearing Face (in): 0.53 - Housing coating: Powder coated - Housing Coating: POWDER COATED - Housing construction: Solid - Housing Construction: Solid - Housing material: Cast iron - Housing Material: Cast Iron - Housing Outside Diameter (in): 5.13 - Housing style: Flange block - Housing Style: Flange Block - Housing type: Flange, Three Bolt - Housing Type: Flange, Three Bolt - Inner ring hub diameter (in): 1 5/16 in - Inner Ring Hub Diameter (in): 1 5/16 in - Inner Ring Outside Diameter (in): 1.307 - Insert: 2012U - Length: 5.50 - Length Through Bore (in): 2.56 - Locking collar outside diameter (in): 1 3/4 in - Locking Collar Outside Diameter (in): 1 3/4 in - Locking device kit: SC2 - Locking Device Kit: SC2 - Locking Type: Single Set Collar - Lubrication type: EXXON RONEX MP STD - Lubrication Type: EXXON RONEX MP STD - Maximum Speed (RPM): 4400 rpm - Maximum Temperature (C): 107 C - Maximum Temperature (F): 225 F - Microlock kit: ML2 - Microlock Kit: ML2 - Misalignment Capability: ±2.0° Misalignment - Dynamic - Misalignment Type: Dynamic - Mounting bolt size (in): 3/8 in - Mounting Bolt Size (in): 3/8 in - Mounting pad height (in): 9/16 in - Mounting Pad Height (in): 9/16 in - Net Weight: 4.30 - Overall Length (in): 4.75 - Overall width: 4.75 - Primary seal: Buna spring loaded lip seal - Primary Seal: BUNA SPRING LOADED LIP SEAL - Radial Dynamic Load Capacity (lb): 15320 lb - Radial Static Load Capacity (lb): 14900 lb - Retainer material: Engineered Polymer - Retainer Material: Engineered Polymer - Rolling element: Spherical Roller - Seal kit: MS2 - Seal Kit: MS2 - Seal type: Heavy Contact Seal - Seal Type: Heavy Contact Seal - Setscrew torque (in-lbs): 185 in/lbs - Setscrew Torque (in-lbs): 185 in/lbs - Size code: 2 - Size Code: 2 - Standoff distance (in): 1/32 in - Standoff Distance (in): 1/32 in - Unit of dimension: in - Unit of Dimension: IN - Vibration frequency fundamental train: 0.0068 cps - Vibration Frequency Fundamental Train: 0.0068 cps - Vibration frequency inner ring defect: 0.1286 cps - Vibration Frequency Inner Ring Defect: 0.1286 cps - Vibration frequency outer ring defect: 0.0880 cps - Vibration Frequency Outer Ring Defect: 0.0880 cps - Vibration frequency roller spin: 0.0406 cps - Vibration Frequency Roller Spin: 0.0406 cps - Volume: 0.426 - Volume unit: GLL - Volume Unit: GLL - Weight unit: LB - Width: 5.50 ## Product documents / software: - [Rex 2000, 3000, 5000, 9000 Series Roller Bearings](https://documents.mrosupply.com/product_documents/BM/BMT52111/000-Series-Roller-Bearings_Installation-Manual_PK8BJAF.pdf) ## Product's reviews: - Rexnord idler pulley - Great pricing and fast shipping A +++++++++ - 1st timer - 1st purchase with MRO good product selection at best price. Will check in for my next purchase. - Jose - Really good customer service - Mechanic - Great service and fast shipping and great quality of product. ## 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.