# Rex MA3215 2-15/16" Mounted Spherical Roller Bearing, 3000 Series Normal Duty, Cast Iron Fixed 2-Bolt Pillow Block, Eccentric Cam Locking Collar, Spring-Loaded Heavy Contact Seal - MROSupply.com

***Rex MA3215 3000 series normal duty mounted spherical roller bearing with 2-15/16 in (74.61 mm) bore. Cast iron fixed 2-bolt pillow block housing, eccentric cam locking collar, and spring-loaded heavy contact lip seal. Suitable for moderate load applications requiring reliable shaft support.***



## Product details:

- Catalog number: 10435136
- SKU: 504126
- Price: ***$1,217.88*** 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: 26.000 lb
- UPC: 698210909581
- 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: DTC91
  

  
- Available End Cap: DTC91
  

  
- 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): 3.25
  

  
- Base Width (in): 3.19
  

  
- 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): 3/4
  

  
- Bore Size (in): 2.9375 in
  

  
- C dynamic load rating: 57750 lb
  

  
- Cage Material: Engineered Polymer
  

  
- Clearance: C3 STANDARD
  

  
- Co static load rating: 71500 lb
  

  
- Distance between bolt holes (in): 8.13
  

  
- Fixed expansion: Fixed
  

  
- Fixed vs. Expansion: Fixed
  

  
- Foot Height (in): 2
  

  
- Grease fitting size: 1/8 NPT
  

  
- Grease Fitting Thread Size: 1/8 NPT
  

  
- Height: 10.56
  

  
- Housing Cast Face to Outermost Bearing Face (in): 1.02
  

  
- 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): 3.37
  

  
- Insert: 3215U
  

  
- Length: 6.56
  

  
- Length Through Bore (in): 4.2
  

  
- Locking collar outside diameter (in): 4.06
  

  
- Locking device kit: SC3215
  

  
- Locking Device Kit: SC3215
  

  
- Locking Type: Eccentric
  

  
- Lubrication type: EXXON RONEX MP STD
  

  
- Lubrication Type: EXXON RONEX MP STD
  

  
- Max Speed: 1700 RPM
  

  
- Maximum Speed (RPM): 1700 rpm
  

  
- Maximum Temperature (C): 107
  

  
- Maximum Temperature (F): 225
  

  
- Microlock kit: ML3
  

  
- Misalignment Capability: ±2.0° Misalignment - Dynamic
  

  
- Misalignment Type: Dynamic
  

  
- Mounted clearance: C3 standard
  

  
- Net Weight: 26.00
  

  
- Overall Length (in): 10.44
  

  
- Overall width: 4.81
  

  
- 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 type: Engineered polymer
  

  
- Seal kit: MS9
  

  
- Seal type: Heavy Contact Seal
  

  
- Series: Solid-housed Pillow Blocks
  

  
- Service instructions: BR3-001 REX 2, 3, 5, 6, 9000
  

  
- Setscrew torque (in-lbs): 460
  

  
- Shaft locking: Eccentric locking collar
  

  
- Size code: 9
  

  
- Size Code: 9
  

  
- Slot Length (in): 1.13
  

  
- Threaded cover kit: TC9
  

  
- 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 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:
- A ok - Quick and correct. These days that is asking a lot.
- Excellent - very fast, very good!!! A+++
- Falk ltg - Fast convenient shopping. Highly recommend. Prompt shipping. 👍🏼
- 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.