Metric tapered bearings have inner and outer ring races between the rollers. The projection lines of the surfaces hit each other at the same point on the shaft. Metric tapered bearings can be subjected to both radial and axial loads simultaneously.
The axial load capacity of the bearings is largely determined by the contact angle. The greater the angle, the higher the axial load capacity. The logarithmic contact profile ensures optimum distribution of stress on the roller contact. Due to the special design of the surfaces of the flange and the large roller, the lubricant is guided into the roller better. The benefits of this are the increased operational reliability and reduced sensitivity to misalignment. Metric tapered bearings are often used in sets and are the most commonly used bearings in a wheel bearing ring. All commercial aircraft take off and land using wheels mounted on tapered bearings.