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High-Capacity Industrial MSF 55 Four-Bolt Flange Bearing Unit | 3 7/16 in. Bore | Set Screw Locking, Cast Iron Housing

5.07 5.07

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Shipping: 2-3 Business Days
Marca: CR
Product Category: Tapered Roller Bearing

Product Details

Brand: SEALMASTER
High-Capacity Industrial MSF 55 Four-Bolt Flange Bearing Unit | 3 7/16 in. Bore | Set Screw Locking, Cast Iron Housing

The MSF 55 series four-bolt flange bearing unit is engineered for demanding industrial environments where reliability and structural integrity are paramount. Featuring a robust grey cast iron housing (standard duty) and a high-quality spherical insert bearing, this unit is designed to accommodate severe radial and axial loads. The 3 7/16 inch bore is securely locked onto the shaft using two precision-placed 120-degree set screws, ensuring maximum grip and minimizing slippage, crucial for high-vibration applications. The internal self-aligning design compensates for minor shaft misalignments, extending the service life of both the bearing and surrounding machinery. This unit offers an exceptional dynamic load rating optimized for continuous operational cycles. Ideal for heavy-duty power transmission applications, including large conveyor systems, mixing equipment, mining machinery, and agricultural processing lines. The sealed and pre-lubricated design simplifies maintenance requirements, offering extended re-lubrication intervals and superior contamination exclusion, even in dusty or wet conditions. The standardized flange dimensions ensure straightforward interchangeability with major competitor mounted unit specifications, facilitating rapid field replacement and minimizing costly downtime. Invest in the MSF 55 for unparalleled durability and consistent performance in the most challenging operational contexts.

Key Features

  • Robust Cast Iron Housing designed for extreme rigidity and impact resistance.
  • High-Capacity Dynamic Load Rating suitable for continuous heavy industrial operation.
  • Patented Set Screw Locking System ensures aggressive shaft grip and vibration resistance.
  • Self-Aligning Internal Bearing corrects for static and dynamic shaft misalignment up to ±2°.
  • Equipped with a lubrication fitting (grease zert) for periodic field maintenance and extended service life.
  • Precision-machined mounting base ensures stable installation and maximum load distribution.

Technical Specifications

unit_modelMSF 55 (Equivalent)
bearing_insert_numberSFT-55
housing_typeFour-Bolt Square Flange
d_bore_diameter3 7/16 in. (3.4375 in.)
housing_materialCast Iron
locking_mechanismSet Screw (120° spacing)
J_bolt_hole_spacing6.000 in.
A_overall_width2.813 in.
H_overall_height7.500 in.
L_flange_length8.375 in.
bolt_size7/8 in.
C_dynamic_load_rating33,500 lbs (Approx.)
C0_static_load_rating22,500 lbs (Approx.)
seal_typeStandard Lip Seal (Contact)
max_rpm2,200 RPM