

Sealmaster NP-28 Mounted Cast Iron Two Bolt Pillow Block Ball Bearing Steel, Black Oxided - Setscrew Lock
- Regular price
- €247,95
- Sale price
- €247,95
- 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
Base Width (in) | 2.13 in |
Overall Width (in) | 2.13 in |
Overall Length (in) | 7.5 in |
Overall Height (in) | 4.25 in |
Bolt Size (in) | 1/2 in |
Bore Diameter (in) | 1.75 in |
Foot Height (in) | 0.69 in |
Base to Center Height (in) | 2.13 in |
Length Through Bore (in) | 1.938 in |
Bolt Spacing Min (in) | 5.44 in |
Bolt Spacing Max (in) | 6.06 in |
Centerline to Outermost Bearing Face (in) | 1.188 in |
Technical Specifications
Housing Base | Solid |
Rolling Element | Ball Bearing |
Bore Shape | Straight |
Housing Construction | One Piece |
Misalignment Type | Static Only |
Outer Ring Land Profile | Standard |
Housing Color | Black |
Cage Material | PPS - Polyphenylene Sulfide |
Seal Type | Felt Labyrinth Seal |
Housing Type | Pillow Block, Two Bolt |
Housing Style | Pillow Block |
Setscrew Torque (in-lbs) | 125-165 in/lbs |
Ability to Relubricate | Yes |
Inner Race Heat Treat Method | Zone-Hardened |
Bearing Type | Standard Duty |
Fixed vs. Expansion | Fixed |
Bearing Insert Finish | Black Oxide |
Static Load Rating (lb) | 5,139 lb |
End Cap Available | No |
Dynamic Load Rating (lb) | 7,901 lb |
Vibration Frequency Roller Spin | 0.0417 cps |
Vibration Frequency Inner Ring Defect | 0.0994 cps |
Vibration Frequency Fundamental Train | 0.0067 cps |
Base Length (in) | 7.50 in |
Lubricant | Lithium Complex NLGI 2 Grease |
Vibration Frequency Outer Ring Defect | 0.0673 cps |
Housing Coating | Powder Coated |
Inner Ring Outside Diameter (in) | 2.063 in |
Maximum Speed (RPM) | 3800 rpm |
Size Code | 2-111 |
Bearing Insert Material | 52100 Bearing Steel |
Housing Material | Cast Iron |
Cage Type | Land Riding Retainer |
Shaft Locking Type | Set Screw |
Radial Clearance | Standard |
Grease Fitting Thread Size | 1/4-28 |
Insert | 2-112 |
Max Operating Temperature (F) | 220 °F |
Misalignment Capability | ±2.0° Misalignment - Static Only |
General Specifications
UPC | 662461001691 |
Weight | 6.56 LB |
Packaged Length | 5.19 IN |
Packaged Width | 2.13 IN |
Packaged Height | 7.81 IN |
HTC | 8483.20.8040 |
Country of Origin | Mexico |
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.