SKF NA 4908 needle bearing

Product detailed description

SKF NA 4908 is a needle roller bearing that is characterized by high precision and reliability, typical of SKF products. This bearing is designed with an inner diameter of 40 mm, an outer diameter of 62 mm and a width of 22 mm. Its design includes a cylindrical bore and is made of high-quality steel, which ensures long life and wear resistance.

The bearing is single-row, which means that it contains one row of needle rollers, which are arranged in a pressed steel cage. This cage ensures uniform load distribution and minimizes friction between the rollers, contributing to the smooth operation of the bearing. The inner ring is part of the design, which allows for easier mounting and dismounting.

SKF NA 4908 is designed for operation in a temperature range from -20 °C to +100 °C, which allows it to be used in various industrial applications. The bearing is unsealed, meaning it is uncovered and requires regular maintenance and lubrication. Lubrication is facilitated by the presence of a circumferential groove with lubrication holes, which ensures optimal distribution of the lubricant and reduces the risk of overheating.

The running accuracy is in class P0/PN, which corresponds to ABEC 1, and provides sufficient accuracy for common applications. The normal radial clearance allows the bearing to compensate for small mounting inaccuracies or thermal expansions. With a weight of 0.23 kg, the bearing is lightweight, making it easy to handle and install.

SKF NA 4908 is ideal for applications where high load capacity is required in limited space, such as gearboxes, automobiles and various industrial machines. Its robust design and reliable performance make this bearing a suitable choice for demanding operating conditions.