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PT 21350 High-Capacity Spherical Roller Bearing (250x420x140mm) – Extreme Load Resilience

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Product Category: Spherical Roller Bearing

Product Details

PT 21350 High-Capacity Spherical Roller Bearing (250x420x140mm) – Extreme Load Resilience

The PT 21350 Spherical Roller Bearing is engineered specifically for demanding, high-impact industrial applications where operational reliability is non-negotiable. Featuring dual rows of robust, precision-machined rollers and a self-aligning design, the 21350 effectively accommodates severe misalignment, shaft deflections, and substantial edge loading, thereby maximizing bearing service life under duress. The optimized internal geometry ensures optimal load distribution across the roller paths, delivering a dynamic load rating (C) exceeding 2000 kN. Constructed from high-purity, through-hardened steel and utilizing a heavy-duty brass cage (M designation), this bearing guarantees superior performance in environments characterized by high vibration and shock loads. Designed for integration into critical power transmission systems, the PT 21350 is the definitive choice for industries such as mining conveyors, steel production mills, heavy-duty gearboxes, and paper machinery. Its large 250mm tapered bore facilitates simple mounting via adapter or withdrawal sleeves, simplifying maintenance protocols and reducing installation complexity. By minimizing frictional heat generation and maximizing shock resistance, the PT 21350 dramatically reduces unplanned downtime and contributes significantly to a lower Total Cost of Ownership (TCO) across its operational lifecycle, affirming PT’s commitment to extreme industrial durability.

Key Features

  • Self-Aligning Capability: Compensates for significant shaft deflection and housing misalignment.
  • Extreme Load Rating: Built to handle very high radial loads and moderate thrust loads simultaneously.
  • Robust M-Type Cage: Machined brass cage provides high strength and reliability in high-vibration environments.
  • Tapered Bore (K): Facilitates precision mounting and dismounting using adapter or withdrawal sleeves.
  • Optimized Roller Geometry: Ensures minimal friction and heat generation, maximizing operational efficiency.
  • PT High-Purity Steel: Enhanced fatigue resistance and prolonged operational life in harsh environments.

Technical Specifications

series213
typeSpherical Roller Bearing
d250 mm
D420 mm
B140 mm
bore_typeTapered (K)
cage_materialMachined Brass (M)
c_dynamic_load_kn2050 kN
c0_static_load_kn2350 kN
limiting_speed_rpm1,800 rpm
mass76.5 kg