# Rex ZA2103 1-3/16" (30.16 mm) 2000 Series Normal Duty 2-Bolt Pillow Block Spherical Roller Bearing, Single Setscrew Locking, Clearance Seal - MROSupply.com ***Rex ZA2103 2000 series normal duty mounted spherical roller bearing in a cast iron fixed 2-bolt pillow block housing. 1-3/16 in (30.16 mm) bore, single setscrew locking collar, standard clearance seal. Designed for moderate load applications requiring reliable self-aligning bearing support.*** ## Product details: - Catalog number: 10430769 - SKU: 507358 - Price: ***$398.50*** 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: 5.400 lb - UPC: 698210159702 - 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: DTC3 - Available End Cap: DTC3 - 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 - Base Length (in): 6.31 - Base to centerline height (in): 1.75 - Base Width (in): 2.13 - Bearing Brand: REX ROLLER BEARING - Bearing housing: Pillow block 2 bolt RB - Bearing housing material: Cast iron - Bearing Type: Spherical roller brg - Bolt Size (in): 1/2 - Bore Size (in): 1.1875 in - C dynamic load rating: 18850 lb - Cage Material: Engineered Polymer - Clearance: C3 STANDARD - Co static load rating: 18300 lb - Distance between bolt holes (in): 4.75 - Fixed expansion: Fixed - Fixed vs. Expansion: Fixed - Foot Height (in): 0.88 - Grease fitting size: 1/8 NPT - Grease Fitting Thread Size: 1/8 NPT - Height: 2.25 - Housing Cast Face to Outermost Bearing Face (in): 0.56 - Housing coating: Powder coated - Housing Coating: POWDER COATED - Housing Color: Black - Housing Construction: Solid - Housing Material: Cast Iron - Housing Style: Pillow Block - Housing Type: Pillow Block, Two Bolt - Inner Ring Outside Diameter (in): 1.532 - Insert: 2103U - Length: 5.75 - Length Through Bore (in): 2.69 - Locking collar outside diameter (in): 2 - Locking device kit: SC3 - Locking Device Kit: SC3 - Locking Type: Single Set Collar - Lubrication type: EXXON RONEX MP STD - Lubrication Type: EXXON RONEX MP STD - Max Speed: 5750 rpm - Maximum Speed (RPM): 5750 rpm - Maximum Temperature (C): 107 - Maximum Temperature (F): 225 - Microlock kit: ML2 - Misalignment Capability: ±2.0° Misalignment - Dynamic - Misalignment Type: Dynamic - Mounted clearance: C3 standard - Net Weight: 5.40 - Overall Length (in): 5.31 - Overall width: 2.69 - Primary seal: Steel clearance seal - Primary Seal: STEEL CLEARANCE SEAL - Radial Dynamic Load Capacity (lb): 18850 lb - Radial Static Load Capacity (lb): 18300 lb - Retainer Material: Engineered Polymer - Retainer type: Engineered polymer - Seal kit: ZS3 - Seal type: Clearance Seal - Series: Solid-housed Pillow Blocks - Service instructions: BR3-001 REX 2, 3, 5, 6, 9000 - Setscrew torque (in-lbs): 185 - Shaft locking: Single set collar - Size code: 3 - Size Code: 3 - Slot Length (in): 0.88 - Threaded cover kit: TC3 - 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: 0.1280 cps - Vibration Frequency Inner Ring Defect: 0.1280 cps - Vibration frequency outer ring defect: 0.0877 cps - Vibration Frequency Outer Ring Defect: 0.0877 cps - Vibration frequency roller spin: 0.0424 cps - Vibration Frequency Roller Spin: 0.0424 cps - Volume: 0.322 - Volume unit: GLL - Volume Unit: GLL - Weight unit: LB - Width: 5.75 ## Alternate products to `Rex ZA2103 1-3/16" (30.16 mm) 2000 Series Normal Duty 2-Bolt Pillow Block Spherical Roller Bearing, Single Setscrew Locking, Clearance Seal - MROSupply.com`: - [Link-Belt PB22419H (mfg part 10409518) is a 2-bolt pillow block spherical roller bearing with a 1-3/16" bore, adapter sleeve mount, and cast iron housing. It features a steel clearance seal, fixed (non-expansion) design, and powder-coated housing. Rated for heavy-duty industrial applications such as conveyors, fans, and gearboxes.](https://www.mrosupply.com/products/495378/as-markdown/) - [Rex KA2103 2000 series normal duty mounted spherical roller bearing in a cast iron fixed 2-bolt pillow block housing. 1-3/16 in (30.16 mm) bore, single setscrew locking collar, and single lip light contact (K) seal. Suitable for moderate load conveying and material handling applications.](https://www.mrosupply.com/products/502578/as-markdown/) ## Product's reviews: - Good - On time good - Great service-fast shipping - Awesome service. I would highly recommend doing business with MRO! Price was cheapest anywhere - 1st timer - 1st purchase with MRO good product selection at best price. Will check in for my next purchase. - Falk ltg - Fast convenient shopping. Highly recommend. Prompt shipping. 👍🏼 ## 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.