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31306 High-Thrust Tapered Roller Bearing | 30x72x20.75mm
- Dimensions: 30mm (ID) x 72mm (OD) x 20.75mm (T)
- Load Ratings: Dynamic (Cr) = 58.3 kN, Static (Cor) = 59.8 kN
- Limiting Speed: 5300 rpm (Oil lubrication) / 3800 rpm (Grease lubrication)
- Fatigue Load Limit (Cu): 6.7 kN
- Material: High-purity GCr15 bearing steel for enhanced fatigue resistance
The 31306 bearing is a premium-grade, metric-sized roller bearing designed to handle combined loads with a heavy bias toward axial force. Commonly deployed in commercial vehicle differentials and power take-off (PTO) units, its steep-cone design reduces edge stress on the rollers. The refined raceway surface topography promotes the formation of a stable lubricant film, dramatically dropping heat generation during peak torque.
