

Sealmaster MP-307 Mounted Cast Iron Two Bolt Pillow Block Ball Bearing Steel, Black Oxided - Setscrew Lock
- Regular price
- $271.00
- Sale price
- $271.00
- Regular price
-
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Key Features
- Powder coated epoxy cast iron housing with extended inner ring bearings
- Zone hardened inner ring with 120° spacing setscrew locking with diamond faceted setscrews
- Unique land riding retainer design provides superior pocket clearance that allows for 360° grease circulation around the rolling elements resulting in better retained and utilized lubrication.
- Sealmaster® exclusive lock pin and dimple for direct lubrication and anti-rotation
Description
The Sealmaster Mounted Cast Iron Two Bolt Pillow Block Ball Bearing is a robust, ready-to-mount bearing unit designed for reliable performance in normal to medium-duty applications. Featuring a solid one-piece cast iron housing, this pillow block ensures maximum strength and rigidity. The bearing insert, crafted from 52100 bearing steel with a black oxide coating, provides excellent corrosion resistance and durability. It utilizes a setscrew locking collar or Sealmaster’s exclusive Skwezloc® concentric locking collar for secure shaft attachment, minimizing slippage. The unit includes felt seals to protect against contaminants and retain lubrication, with a relubricatable design for extended bearing life. The two-bolt base allows for straightforward installation, supporting radial or radial-and-thrust loads. With a wide range of bore sizes and configurations, this bearing is ideal for applications such as conveyors, industrial machinery, and material handling systems. Sealmaster’s innovative features, like the lock pin and dimple system, enable direct lubrication and prevent outer ring rotation, ensuring optimal performance and reduced maintenance.
Specifications
Dimensions
Overall Width (in) | 2.25 in |
Overall Length (in) | 8 in |
Base Width (in) | 2.25 in |
Overall Height (in) | 4.19 in |
Bolt Size (in) | 1/2 in |
Bore Diameter (mm) | 35 mm |
Foot Height (in) | 0.75 in |
Base to Center Height (in) | 2.125 in |
Length Through Bore (in) | 1.935 in |
Bolt Spacing (in) | 5.69 in |
Centerline to Outermost Bearing Face (in) | 1.185 in |
Bolt Spacing Max (in) | 6.38 in |
Bolt Spacing Min (in) | 5 in |
Technical Specifications
Rolling Element | Ball Bearing |
Housing Base | Solid |
Bore Shape | Straight |
Housing Construction | One Piece |
Outer Ring Land Profile | Standard |
Misalignment Type | Static Only |
Housing Color | Black |
Cage Material | PPS - Polyphenylene Sulfide |
Housing Type | Pillow Block, Two Bolt |
Seal Type | Felt Labyrinth Seal |
Housing Style | Pillow Block |
Ability to Relubricate | Yes |
Inner Race Heat Treat Method | Zone-Hardened |
Housing Coating | Powder Coated |
Vibration Frequency Roller Spin | 0.0376 cps |
Cage Type | Land Riding Retainer |
Shaft Locking Type | Set Screw |
Max Operating Temperature (F) | 220 °F |
Fixed vs. Expansion | Fixed |
Maximum Speed (RPM) | 4150 rpm |
Housing Material | Cast Iron |
Misalignment Capability | ±2.0° Misalignment - Static Only |
Grease Fitting Thread Size | 1/4-28 |
Inner Ring Outside Diameter (in) | 2.07 in |
Bearing Type | Medium Duty |
Insert | 5307 |
End Cap Available | No |
Bearing Insert Material | 52100 Bearing Steel |
Size Code | 2-19 |
Bearing Insert Finish | Black Oxide |
Static Load Rating (lb) | 4,467 lb |
Dynamic Load Rating (lb) | 7,340 lb |
Base Length (in) | 8 in |
Lubricant | Lithium Complex NLGI 2 Grease |
Vibration Frequency Inner Ring Defect | 0.0909 cps |
Radial Clearance | Standard |
Vibration Frequency Fundamental Train | 0.0066 cps |
Vibration Frequency Outer Ring Defect | 0.0591 cps |
General Specifications
UPC | 662461053966 |
Weight | 6.50 LB |
Packaged Length | 9.00 IN |
Packaged Width | 5.19 IN |
Packaged Height | 2.38 IN |
HTC | 8483.20.8040 |
Country of Origin | United States of America |
Manuals
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Disclaimer: Apollo Industries is not an authorized distributor, reseller, or representative of Regal Rexnord Corporation. All Regal Rexnord Corporation trademarks and product names are the property of their respective owners. We sell genuine Regal Rexnord Corporation products purchased through independent channels.