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Premium 1-7/16" Pillow Block Bearing Unit | MST-23 Standard Duty | High-Performance Industrial Cast Iron Housing

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Product Category: Other Accessories

Product Details

Brand: SEALMASTER
Premium 1-7/16" Pillow Block Bearing Unit | MST-23 Standard Duty | High-Performance Industrial Cast Iron Housing

The MST-23 1-7/16" mounted ball bearing unit is engineered for reliable medium-duty applications across challenging industrial environments, including conveyor systems, pulp & paper, and material handling. This unit features a robust, one-piece cast iron housing designed to withstand significant shock loads and minimize vibration, ensuring maximum shaft support and operational stability. The precision-machined bore houses a high-grade steel insert capable of handling demanding radial and axial loads. Utilizing a standard dual-setscrew locking mechanism, the unit ensures a tight, concentric fit on the 1-7/16 inch shaft, dramatically reducing fretting corrosion and slip under load, which is critical for maintaining high Mean Time Between Failures (MTBF) in 24/7 operations. As a Senior Product Manager, my focus is Total Cost of Ownership (TCO), and the MST-23 excels in this area through superior sealing and reduced maintenance cycles. The unit integrates SEALMASTER's patented land-riding seals, combining multiple sealing lips with a labyrinth structure to effectively exclude abrasive contaminants while retaining necessary lubrication. This advanced sealing technology minimizes internal friction and prevents premature bearing failure, maximizing uptime and reducing expensive replacement costs. The housing is equipped with a standard grease fitting for easy relubrication, ensuring a prolonged service life even in environments exposed to washdowns or excessive dust. Specify the MST-23 for superior reliability and optimized operational efficiency.

Key Features

  • Premium Cast Iron Construction: Provides rigid support and superior resistance to shock loads compared to standard stamped steel housings.
  • Patented Land-Riding Sealing System: Combines a labyrinth design with multi-lip seals to achieve maximum contaminant exclusion and lubricant retention, significantly extending service life.
  • Dual Setscrew Locking: Ensures a secure, concentric grip on the shaft, minimizing vibration, wear, and installation complexity.
  • Precision-Honed Raceway: Minimizes running noise and friction, resulting in cooler operation and lower energy consumption.
  • Grease Fitting Standard: Facilitates easy relubrication for maximum lifespan in demanding, high-contamination environments.

Technical Specifications

d1.4375 in (1 7/16")
TypeStandard Duty Mounted Ball Bearing
Housing_StylePillow Block (Solid Base)
Locking_MechanismDual Setscrew
Housing_MaterialCast Iron
H_Center_Height2.125 in
L_Overall_Length6.875 in
J_Bolt_Centers5.500 in
Dynamic_Load_Rating_C9,900 lbs
Static_Load_Rating_C07,200 lbs
Max_RPM3,800
RelubricationYes (Grease Zerk)