# Rex ZAS220778 2000 Series Adapter Spherical Pillow Block Bearing 2-7/16" Bore Normal Duty Expansion Cast Iron - MROSupply.com ***Rex ZAS220778 2000 series adapter spherical pillow block bearing with 2-7/16" bore. Expansion unit features cast iron 2-bolt pillow block housing, single setscrew locking collar, clearance seal, and steel retainer. Designed for normal duty applications.*** ## Product details: - Catalog number: 10417480 - SKU: 507170 - Price: ***$1,860.34*** 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: 16.300 lb - UPC: 793699333398 - 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): 9.25 - Base to centerline height (in): 2 3/4 in - Base to Centerline Height (in): 2 3/4 in - Base Width (in): 2.69 - Bearing Brand: REX ROLLER BEARING - Bolt Size (in): 2.4375 in - Bore length (in): 3 1/2 in - Bore Length (in): 3 1/2 in - Bore size (in): 2.4375 in - Bore Size (in): 2.4375 in - Cage Material: Steel - Clearance: C3 STANDARD - Distance between bolt holes (in): 7 1/8 in - Distance Between Bolt Holes (in): 7 1/8 in - Distance from housing cast face to locking feature face (in): 7/8 in - Distance from Housing Cast Face to Locking Feature Face (in): 7/8 in - Expansion Capability (in): 0.38 - Expansion lock plug: B224408A - Expansion Lock Plug: B224408A - Fixed vs. Expansion: Expansion - Foot Height (in): 1.63 - Grease Fitting Thread Size: 1/8 NPT - Height: 5.50 - 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): 2 29/32 in - Inner Ring Hub Diameter (in): 2 29/32 in - Inner Ring Outside Diameter (in): 2.901 - Insert: ZCS2207R78 - Length: 9.56 - Length Through Bore (in): 3.5 - Locking collar outside diameter (in): 3 9/16 in - Locking Collar Outside Diameter (in): 3 9/16 in - Locking device kit: SC8 - Locking Device Kit: SC8 - Locking Type: Single Set Collar - Lubrication type: EXXON RONEX MP STD - Lubrication Type: EXXON RONEX MP STD - Maximum Speed (RPM): 3300 rpm - Maximum Temperature (C): 107 C - Maximum Temperature (F): 225 F - Misalignment Capability: ±2.0° Misalignment - Dynamic - Misalignment Type: Dynamic - Mounting bolt hole slot length (in): 1 in - Mounting Bolt Hole Slot Length (in): 1 in - Mounting bolt size (in): 5/8 in - Mounting Bolt Size (in): 5/8 in - Mounting pad height (in): 1 5/8 in - Mounting Pad Height (in): 1 5/8 in - Mounting pad length (in): 9 1/8 in - Mounting Pad Length (in): 9 1/8 in - Mounting pad width (in): 2 11/16 in - Mounting Pad Width (in): 2 11/16 in - Net Weight: 16.30 - Overall Length (in): 9.13 - Overall width: 3.5 - Primary seal: Steel clearance seal - Primary Seal: STEEL CLEARANCE SEAL - Radial Dynamic Load Capacity (lb): 43240 lb - Radial Static Load Capacity (lb): 53500 lb - Retainer material: Steel - Retainer Material: Steel - Rolling element: Spherical Roller - Seal kit: ZS8 - Seal Kit: ZS8 - Seal type: Labyrinth Seal - Seal Type: Labyrinth Seal - Series: Solid-housed Pillow Blocks - Setscrew torque (in-lbs): 680 in/lbs - Setscrew Torque (in-lbs): 680 in/lbs - Size code: 8 - Size Code: 8 - 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: 0.1791 cps - Vibration Frequency Inner Ring Defect: 0.1791 cps - Vibration frequency outer ring defect: 0.1376 cps - Vibration Frequency Outer Ring Defect: 0.1376 cps - Vibration frequency roller spin: 0.0607 cps - Vibration Frequency Roller Spin: 0.0607 cps - Volume: 0.911 - Volume unit: GLL - Volume Unit: GLL - Weight unit: LB - Width: 4.00 ## 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) ## Alternate products to `Rex ZAS220778 2000 Series Adapter Spherical Pillow Block Bearing 2-7/16" Bore Normal Duty Expansion Cast Iron - MROSupply.com`: - [Dodge 070351 P2B-S2-207LE two-bolt pillow block bearing with 2-7/16" bore, set screw locking, spherical roller insert, cast iron housing, expansion (float) design, labyrinth seal, 2250 RPM max speed, black oxide finish, bolt centerline range 6-15/16" to 7-5/16", shaft centerline height 2-3/4".](https://www.mrosupply.com/products/128915/as-markdown/) - [Dodge 070305 P2B-S2-207RE two-bolt pillow block bearing with 2-7/16" bore, S-2000 spherical roller insert, set screw locking, and expansion (float) capability. 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A+++ - 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 - Rexnord idler pulley - Great pricing and fast shipping 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.