1、 Basic Definition & Structural Features‌

UCP bearings (Pillow Block Bearings with Insert) are pre-assembled units comprising a bearing insert housed within a cast iron or pressed steel pedestal. Key characteristics include:

• ‌Spherical Outer Surface‌: The bearing outer diameter features a spherical design, enabling ±3° self-aligning capability.
• ‌Pre-sealed Configuration‌: Standard rubber seals (RS or 2RS configuration) provide IP54-rated protection against dust and water ingress.
• ‌Standardized Housing‌: Compliant with ISO 113:2015, ensuring cross-brand interchangeability of mounting hole spacing.

‌2. Operating Principles & Mechanical Properties‌

2.1 Load Transmission Mechanism

Load transfer occurs through rolling elements (steel balls) between inner and outer rings:

• ‌Radial Loads‌: Transmitted along the bearing radius (accounting for ~70% of load capacity).
• ‌Axial Loads‌: Accommodate unidirectional axial forces (≈20% of radial load capacity).
• Ultra-low rolling friction coefficient: 0.001–0.003
• Maximum speed: 3,000 rpm with lithium-based grease lubrication (2,000-hour grease life @ 70°C).
• Combine harvester drive shafts (operating temp.: -30°C to 80°C)
• Irrigation system worm gear reducers (require anti-corrosion coatings)
• Conveyor belt drive units (FDA-compliant stainless steel variants)
• Crank mechanisms in packaging machines (withstanding cyclic shock loads)
• Vibrating screens in crushers (require supplemental labyrinth seals)
• Belt conveyor idler rollers (special lubrication solutions for dusty environments)

2.2 Tribological Properties

‌3. Typical Application Scenarios‌

3.1 Agricultural Machinery

3.2 Food Processing Industry

3.3 Mining Equipment

‌4. Technical Selection Guidelines

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