DOYE IKO Tapered Roller Bearing 30305 For Excavators Wind Power / Construction Machinery

• The 30305 tapered roller bearing is a benchmark product among high-end bearings, specially designed for high-load and high-speed scenarios. It features excellent reliability and cost-effectiveness. As a classic model of single-row tapered roller bearings, its split inner and outer ring structure facilitates installation and debugging, making it widely used in automotive, wind power, construction machinery and other fields.

• Inner diameter: 25 mm; Outer diameter: 62 mm; Total width: 18.25 mm; Contact angle: 11.31°
• Adopting vacuum-degassed bearing steel with a hardness of HRC 60-64 (oxygen content ≤ 8ppm), its service life is 20% longer than that of traditional bearings.
• Radial load capacity: 55.3 kN; Axial load capacity: 43 kN; Limiting speed: 12,000 r/min
• Two precision classes are available: P0 (general grade) and P6 (precision grade). For the P6 class, the raceway roundness error is ≤ 1.5 μm, and the vibration value is reduced by 30%.

• Using vacuum-degassed bearing steel (52100 chromium steel). The microstructure is optimized through quenching + tempering processes, with wear resistance 18% higher than that of ordinary electroslag steel. It is suitable for harsh environments such as high temperatures (-30°C to 110°C) and high dust levels.

• Split structure: The inner and outer rings can be installed separately, supporting preload adjustment, which is applicable to high-precision transmission systems.
• Stamped steel cage: Optimizes the roller guidance path, reducing friction loss by 15% and improving stability during high-speed operation.

• Excavator travel mechanism: Widely used in excavators, it can bear an axial load of 43 kN with a failure rate of less than 0.8%.
• Mining machinery: Replaces FAG bearings in gold mine crushers of Anglo American (South Africa), reducing costs by 30% and increasing wear resistance by 18%.

Tapered roller bearings are widely used in industries such as automotive, rolling mills, mining, metallurgy, and plastic machinery.