Pallokeskeisiin

Pallokeskeisiin is a Finnish term that translates to "ball bearings" in English. It refers to a type of rolling-element bearing that uses spherical balls to maintain separation between the moving parts of the bearing. The balls are typically made of hardened steel, ceramic, or other durable materials.

The primary function of a ball bearing is to reduce rotational friction and support radial and axial loads. The smooth, spherical shape of the balls allows them to roll with minimal resistance, which is crucial for the efficient operation of many mechanical systems. When a load is applied, the balls distribute it evenly across the bearing races, preventing direct metal-to-metal contact and wear.

Ball bearings are widely used in various applications, including automotive components like wheels and engines, industrial machinery, household appliances, and even in sporting equipment such as skateboards and bicycles. Their prevalence is due to their cost-effectiveness, versatility, and relatively low maintenance requirements.

There are several types of ball bearings, including deep groove ball bearings, angular contact ball bearings, self-aligning ball bearings, and thrust ball bearings. Each type is designed to handle specific load conditions and operational requirements. For example, deep groove ball bearings are the most common and can handle both radial and axial loads, while thrust ball bearings are specifically designed to support axial loads. The selection of the appropriate type of pallokeskeisiin depends on the intended application and the forces it will encounter.