Sealmaster MP-307 Mounted Cast Iron Two Bolt Pillow Block Ball Bearing Steel, Black Oxided - Setscrew Lock

Brand: Sealmaster (RRX)
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$271.00
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Regal Rexnord is a global leader in power transmission and motion control products, offering a broad portfolio that includes bearings, motors, gear drives, and automation solutions. Their innovations drive efficiency, reliability, and performance across industrial, commercial, and energy markets.

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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

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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.