

Sealmaster NP-20R Mounted Cast Iron Two Bolt Pillow Block Ball Bearing Steel, Black Oxided - Setscrew Lock
- Regular price
- €251,95
- Sale price
- €251,95
- 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
Overall Width (in) | 1.88 in |
Overall Height (in) | 3.38 in |
Overall Length (in) | 6.5 in |
Base Width (in) | 1.88 in |
Bolt Size (in) | 1/2 in |
Bore Diameter (in) | 1.25 in |
Foot Height (in) | 0.56 in |
Base to Center Height (in) | 1.6875 in |
Length Through Bore (in) | 1.497 in |
Centerline to Outermost Bearing Face (in) | 0.875 in |
Bolt Spacing Max (in) | 5.06 in |
Bolt Spacing (in) | 4.75 in |
Bolt Spacing Min (in) | 4.44 in |
Technical Specifications
Rolling Element | Ball Bearing |
Housing Base | Solid |
Bore Shape | Straight |
Housing Construction | One Piece |
Outer Ring Land Profile | Standard |
Housing Color | Black |
Misalignment Type | Static Only |
Cage Material | PPS - Polyphenylene Sulfide |
Seal Type | Felt Labyrinth Seal |
Housing Type | Pillow Block, Two Bolt |
Housing Style | Pillow Block |
Ability to Relubricate | Yes |
Inner Race Heat Treat Method | Zone-Hardened |
Shaft Locking Type | Set Screw |
Maximum Speed (RPM) | 5450 rpm |
Inner Ring Outside Diameter (in) | 1.594 in |
Lubricant | Lithium Complex NLGI 2 Grease |
Static Load Rating (lb) | 2,567 lb |
Misalignment Capability | ±2.0° Misalignment - Static Only |
Vibration Frequency Fundamental Train | 0.0066 cps |
Vibration Frequency Roller Spin | 0.0385 cps |
Bearing Insert Material | 52100 Bearing Steel |
Vibration Frequency Inner Ring Defect | 0.0905 cps |
Fixed vs. Expansion | Fixed |
Housing Coating | Powder Coated |
Dynamic Load Rating (lb) | 4,381 lb |
Vibration Frequency Outer Ring Defect | 0.0595 cps |
Bearing Type | Standard Duty |
Size Code | 2-13 |
Radial Clearance | Standard |
Insert | 1-14 |
Base Length (in) | 6.5 in |
Grease Fitting Thread Size | 1/4-28 |
Max Operating Temperature (F) | 220 °F |
Housing Material | Cast Iron |
Bearing Insert Finish | Black Oxide |
Cage Type | Land Riding Retainer |
End Cap Available | No |
General Specifications
UPC | 662461001608 |
Weight | 3.61 LB |
Packaged Length | 2.06 IN |
Packaged Width | 4.38 IN |
Packaged Height | 6.81 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.