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1228 Self Aligning Bearing - Heavy Machinery Bearing 140x250x52
The 1228 bearing is a reliable self-aligning ball bearing designed for heavy machinery applications. With its unique spherical raceway design and double-row rolling element structure, it offers excellent self-aligning capability and load-carrying performance in industrial transmission systems.
Product Structural Design
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.
Performance Advantages
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.
Application Fields
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
Installation and Maintenance Points
Installation Points:
Clean journal and bearing housing bore (surface roughness ≤Ra1.6μm)
Use temperature difference method: heat bearing to 80-100℃ or cool shaft to -20~-30℃
Check axial movement: 0.1-0.3mm after installation
Check lubrication every 1000 hours (500 hours in dusty environments)
Monitor with vibration detector (stop if acceleration >2.5g)
Use rain shields for outdoor equipment
With its excellent self-aligning performance, high load-carrying capacity, and wide environmental adaptability, the 1228 bearing provides solid guarantee for stable and efficient operation of large mechanical transmission systems.
Introduction:1.Covering an area of 80 mu (about 53,333 square meters), our factory has a 60-person team including 4 professional engineers, ensuring stable production and technical support.
2. Focusing on bearing production for 25 years, quality is our only guarantee3. Wafangdian Bearing Factory was... Introduction:1.Covering an area of 80 mu (about 53,333 square meters), our factory has a 60-person team including 4 professional engineers, ensuring stable production and technical support.
2. Focusing on bearing production for 25 years, quality is our only guarantee3. Wafangdian Bearing Factory was...
