Tapered roller bearings for radial load, axial load and radial and axial joint load. Tapered roller bearing axial load capacity depends on the contact angle α, ie the outer ring raceway angle, the larger the contact angle α, the greater the axial load capacity. Tapered roller bearings are generally not allowed to have an angular error, but the roller and raceway surface after special design allows a 2 'to 4' angle error.
Single row tapered roller bearings single row tapered roller bearings can withstand axial load in one direction. And to limit the bearing axis relative to a direction of the axial displacement. Even in pure radial load is applied, tapered roller bearings inside will produce additional axial component, this time, the need to have an equal amount of force to reverse with the balance.
Commonly used in both the single row tapered roller bearing two identical structures bearing face to face or back to back in order to ensure a relatively safe operating condition to get a good bearing, tapered roller bearings with other ball bearings and roller bearings, must exert a certain amount of minimum load, particularly the work of the high-speed, high acceleration, or frequent changes in the direction of load conditions. Because these working conditions, roller and cage inertial force and friction within the frame of the lubricant will be rolling bearings, precision rotation adverse effects between the rollers and raceways may produce harmful bearing slide movement. Tapered roller bearings required minimum load Fmin estimated using the following formula: Fmin = 0.02C where C - basic dynamic load rating, the case KN start at low temperatures or very high viscosity of the lubricant may need more minimum load.
Typically, the weight bearing support member itself plus the load on the bearing, has exceeded the required minimum load. If you have not reached the minimum load, such bearings must be subjected to an additional radial load, such as bearing axial preload applied to meet the minimum load requirement.