1228 Self Aligning Bearing Heavy Machinery Bearing 140x250x52

Rolling Elements and Raceways: Features two rows of high-precision steel balls with surface roughness as low as Ra0.02μm and roundness error controlled within 1μm. The inner ring has a double-groove structure while the outer ring raceway is spherical, enabling automatic compensation for angular deviations up to 3°.

Cage: Constructed from high-quality low-carbon steel plates with optional nylon cages (PA66 + 30% glass fiber) for enhanced corrosion resistance and self-lubrication in humid environments.

• Bearing Steel: High-carbon chromium bearing steel (GCr15) with hardness HRC60-65 after heat treatment, providing excellent wear resistance and contact fatigue strength.
• Cage: Steel plate cages for dry/normal temperature environments; nylon cages for humid conditions (>80% humidity) with better corrosion resistance and suitability for medium-high speed applications.

• Super Strong Self-Aligning Ability: Compensates for angular deviations up to 3°, extending service life by over 30% in deflection-prone equipment.
• High Radial Load-Carrying Capacity: 50% higher than single-row bearings of same size, ideal for heavy-load equipment.
• Low Vibration and Low Noise: Vibration velocity level ≤28dB, suitable for noise-sensitive applications.
• Strong Environmental Adaptability: Supports various sealing forms with IP54 protection for dusty and humid environments.

• Heavy Industry Equipment: Rolling mill roller tables, crane slewing mechanisms, mining crushers
• General Machinery: Large fans, water pumps, reducers transmission shafts
• Textile and Papermaking: Textile machine spindles, papermaking machine press rolls
• Shipbuilding and Metallurgy: Ship propulsion systems, metallurgical continuous casters