# Rex ZA2311 3-11/16" (93.66 mm) 2000 Series Normal Duty 2-Bolt Pillow Block Spherical Roller Bearing, Cast Iron Fixed, Single Setscrew Locking, Clearance Seal - MROSupply.com ***Rex ZA2311 2000 series normal duty mounted spherical roller bearing with 3-11/16 in (93.66 mm) bore. Cast iron fixed 2-bolt pillow block housing, single setscrew locking collar, and standard clearance seal. Designed for moderate load applications requiring self-alignment and reliable performance.*** ## Product details: - Catalog number: 10408413 - SKU: 507547 - Price: ***$2,262.71*** 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: 58.000 lb - UPC: 698210595487 - 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: DTC11 - Available End Cap: DTC11 - 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): 14.25 - Base to centerline height (in): 4 1/8 in - Base to Centerline Height (in): 4 1/8 in - Base Width (in): 4.13 - Bearing Brand: REX ROLLER BEARING - Bolt Size (in): 3.6875 in - Bore length (in): 5 1/16 in - Bore Length (in): 5 1/16 in - Bore size (in): 3.6875 in - Bore Size (in): 3.6875 in - Cage Material: Engineered Polymer - Clearance: C3 STANDARD - Distance between bolt holes (in): 10 7/8 in - Distance Between Bolt Holes (in): 10 7/8 in - Distance from housing cast face to locking feature face (in): 1 1/32 in - Distance from Housing Cast Face to Locking Feature Face (in): 1 1/32 in - Fixed vs. Expansion: Fixed - Foot Height (in): 2.13 - Grease Fitting Thread Size: 1/8 NPT - Height: 8.50 - Housing Cast Face to Outermost Bearing Face (in): 1.03 - 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): 4 9/16 in - Inner Ring Hub Diameter (in): 4 9/16 in - Inner Ring Outside Diameter (in): 4.561 - Insert: 2311U - Length: 15.50 - Length Through Bore (in): 5.13 - Locking collar outside diameter (in): 5 5/8 in - Locking Collar Outside Diameter (in): 5 5/8 in - Locking device kit: SC11 - Locking Device Kit: SC11 - Locking Type: Single Set Collar - Lubrication type: EXXON RONEX MP STD - Lubrication Type: EXXON RONEX MP STD - Maximum Speed (RPM): 2050 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 3/4 in - Mounting Bolt Hole Slot Length (in): 1 3/4 in - Mounting bolt size (in): 1 in - Mounting Bolt Size (in): 1 in - Mounting pad height (in): 2 1/8 in - Mounting Pad Height (in): 2 1/8 in - Mounting pad length (in): 14 1/4 in - Mounting Pad Length (in): 14 1/4 in - Mounting pad width (in): 4 1/8 in - Mounting Pad Width (in): 4 1/8 in - Net Weight: 58.00 - Overall Length (in): 14.25 - Overall width: 5.13 - Primary seal: Steel clearance seal - Primary Seal: STEEL CLEARANCE SEAL - Radial Dynamic Load Capacity (lb): 130970 lb - Radial Static Load Capacity (lb): 137000 lb - Retainer material: Engineered Polymer - Retainer Material: Engineered Polymer - Rolling element: Spherical Roller - Seal kit: ZS11 - Seal Kit: ZS11 - Seal type: Labyrinth Seal - Seal Type: Labyrinth Seal - Series: Solid-housed Pillow Blocks - Setscrew torque (in-lbs): 1350 in/lbs - Setscrew Torque (in-lbs): 1350 in/lbs - Size code: 11 - Size Code: 11 - Unit of dimension: in - Unit of Dimension: IN - Vibration frequency fundamental train: 0.0071 cps - Vibration Frequency Fundamental Train: 0.0071 cps - Vibration frequency inner ring defect: 0.1717 cps - Vibration Frequency Inner Ring Defect: 0.1717 cps - Vibration frequency outer ring defect: 0.1283 cps - Vibration Frequency Outer Ring Defect: 0.1283 cps - Vibration frequency roller spin: 0.0548 cps - Vibration Frequency Roller Spin: 0.0548 cps - Volume: 0.116 - Volume unit: Hectoliter - Volume Unit: Hectoliter - Weight unit: LB - Width: 5.38 ## 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: - Good - On time good - 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 - Great service-fast shipping - Awesome service. I would highly recommend doing business with MRO! Price was cheapest anywhere - Jose - Really good customer service ## 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.