Sealmaster MP-55 Mounted Cast Iron Two Bolt Pillow Block Ball Bearing teel, Black Oxided - Setscrew Lock

Brand: Sealmaster (RRX)
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$1,892.00
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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

Base Width (in) 4.38 in
Overall Width (in) 4.38 in
Overall Height (in) 8.25 in
Overall Length (in) 15 in
Bolt Size (in) 7/8 in
Bore Diameter (in) 3.4375 in
Base to Center Height (in) 4.0000 in
Foot Height (in) 1.31 in
Length Through Bore (in) 3.781 in
Bolt Spacing Min (in) 9.63 in
Centerline to Outermost Bearing Face (in) 2.219 in
Bolt Spacing Max (in) 12.63 in

Technical Specifications

Housing Base Solid
Rolling Element Ball Bearing
Bore Shape Straight
Housing Construction One Piece
Outer Ring Land Profile Standard
Misalignment Type Static Only
Housing Color Black
Cage Material Brass
Housing Type Pillow Block, Two Bolt
Seal Type Felt Labyrinth Seal
Housing Style Pillow Block
Inner Race Heat Treat Method Zone-Hardened
Ability to Relubricate Yes
Setscrew Torque (in-lbs) 500-650 in/lbs
Base Length (in) 15.00 in
Size Code 2-38
Bearing Type Medium Duty
Static Load Rating (lb) 16,301 lb
Bearing Insert Material 52100 Bearing Steel
Cage Type Land Riding Retainer
Shaft Locking Type Set Screw
Lubricant Lithium Complex NLGI 2 Grease
Housing Coating Powder Coated
Dynamic Load Rating (lb) 21,566 lb
Grease Fitting Thread Size 1/4 NPT
Bearing Insert Finish Black Oxide
End Cap Available No
Vibration Frequency Roller Spin 0.0454 cps
Fixed vs. Expansion Fixed
Radial Clearance Standard
Insert 3-37
Vibration Frequency Inner Ring Defect 0.0981 cps
Inner Ring Outside Diameter (in) 4.391 in
Maximum Speed (RPM) 2000 rpm
Vibration Frequency Outer Ring Defect 0.0685 cps
Misalignment Capability ±2.0° Misalignment - Static Only
Housing Material Cast Iron
Vibration Frequency Fundamental Train 0.0069 cps
Max Operating Temperature (F) 220 °F

General Specifications

UPC 662461013977
Weight 48.96 LB
Packaged Length 17.25 IN
Packaged Width 9.88 IN
Packaged Height 4.88 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.