

Sealmaster NP-39 Mounted Cast Iron Two Bolt Pillow Block Ball Bearing Black Oxided - Setscrew Lock
- Regular price
- $390.00
- Sale price
- $390.00
- Regular price
-
Free shipping on orders over $100
Use code at checkout.
Orders placed before 3:00pm (Est) ship same day
Lightning-fast shipping, guaranteed.

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 Length (in) | 9.5 in |
Base Width (in) | 2.75 in |
Overall Width (in) | 2.75 in |
Overall Height (in) | 5.56 in |
Bolt Size (in) | 5/8 in |
Bore Diameter (in) | 2.4375 in |
Base to Center Height (in) | 2.7500 in |
Foot Height (in) | 0.88 in |
Length Through Bore (in) | 2.563 in |
Bolt Spacing Min (in) | 6.88 in |
Bolt Spacing Max (in) | 7.63 in |
Centerline to Outermost Bearing Face (in) | 1.563 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 |
Seal Type | Felt Labyrinth Seal |
Housing Type | Pillow Block, Two Bolt |
Housing Style | Pillow Block |
Setscrew Torque (in-lbs) | 230-300 in/lbs |
Ability to Relubricate | Yes |
Inner Race Heat Treat Method | Zone-Hardened |
Housing Coating | Powder Coated |
Misalignment Capability | ±2.0° Misalignment - Static Only |
Size Code | 2-27 |
Bearing Insert Material | 52100 Bearing Steel |
Dynamic Load Rating (lb) | 11,789 lb |
Cage Type | Land Riding Retainer |
Shaft Locking Type | Set Screw |
Maximum Speed (RPM) | 3000 rpm |
Inner Ring Outside Diameter (in) | 2.984 in |
Vibration Frequency Inner Ring Defect | 0.0989 cps |
Bearing Insert Finish | Black Oxide |
Grease Fitting Thread Size | 1/8 NPT |
Housing Material | Cast Iron |
Vibration Frequency Roller Spin | 0.0432 cps |
Vibration Frequency Outer Ring Defect | 0.0678 cps |
Base Length (in) | 9.50 in |
Fixed vs. Expansion | Fixed |
Vibration Frequency Fundamental Train | 0.0068 cps |
Lubricant | Lithium Complex NLGI 2 Grease |
Max Operating Temperature (F) | 220 °F |
Radial Clearance | Standard |
Static Load Rating (lb) | 8,150 lb |
Insert | 2-27 |
End Cap Available | No |
Bearing Type | Standard Duty |
General Specifications
UPC | 662461001806 |
Weight | 13.86 LB |
Packaged Length | 10.38 IN |
Packaged Width | 6.50 IN |
Packaged Height | 3.00 IN |
HTC | 8483.20.8040 |
Country of Origin | Mexico |
Manuals
Check Out These Related Products
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.