5203KYY2 double row angular contact bearing

5203KYY2 is a high-performance double-row angular contact ball bearing specially developed for non-standard working conditions
such as agricultural machinery and heavy equipment. It has the characteristics of high load-bearing capacity,
impact resistance and long life.
Its unique design can withstand radial and axial composite loads at the same time to meet complex force requirements.

Detailed parameters

Basic dimensions (mm)

• Inner diameter (d): 17 mm
  
• Outer diameter (D): 40 mm
  
• Width (B): 19 mm
  
• Chamfer (r min): 0.6 mm

Performance parameters

• Structural type: double-row angular contact ball bearing (non-standard design)
•   Contact angle: 25°~30° (optimized axial and radial composite load)
• Limiting speed (grease lubrication): ≈6000 rpm
• Rated dynamic load (Cr): ≈15.8 kN
• Rated static load (Cor): ≈10.2 kN

Sealing and lubrication

• Sealing method: YY2 double-sided dust cover (anti-mud and water, anti-impurities)
• Grease: high-temperature lithium-based grease (default filling, applicable to -30℃~120℃

Materials and Process

• Rings & Balls: High Carbon Chromium Bearing Steel (GCr15)
• Cage: Stamped Steel (or Nylon Reinforced)
• Heat Treatment: Overall Quenching + Low Temperature Tempering, Hardness HRC 58-62

Applicable scenarios

• Agricultural machinery: drive shafts of planters, harvesters, and rotary tillers
• Industrial equipment: small gearboxes, conveyor belt rollers, and other medium and low speed heavy load environments