INA RNA 6909-ZW-XL needle bearing without inner ring

Product detailed description

INA RNA 6909-ZW-XL is a needle roller bearing without an inner ring, designed for applications requiring high precision and durability. This bearing is characterized by its solid construction and is made of high-quality steel, which guarantees its long service life and reliability in demanding conditions. The dimensions of the bearing are: inner diameter (d) 52 mm, outer diameter (D) 68 mm and width (B) 40 mm.

The bearing belongs to the category of double-row needle roller bearings, which means that it contains two rows of needles, which increase its load capacity and improve load distribution. It is equipped with a pressed steel cage, which ensures a stable arrangement of the needles and minimizes friction. The bearing is without an inner ring, which allows it to be used directly on the shaft, as long as the shaft surface is sufficiently hard and precisely machined.

The operating temperature range of the bearing is from -20 °C to +100 °C, which allows it to be used in various industrial applications. The bearing is without a seal, which means that external lubrication is necessary. For this purpose, it is equipped with a circumferential groove with lubrication holes that allow for efficient supply of lubricant to the bearing.

The running accuracy of the bearing is in class P0/PN, which corresponds to the standard accuracy according to the ABEC 1 standard. Normal radial clearance ensures optimal operation under normal load conditions. The total weight of the bearing is 0.345 kg, which contributes to its robustness and stability in high-load applications.

INA RNA 6909-ZW-XL is an ideal choice for applications where high load capacity and reliability are required, such as gearboxes, compressors or various types of industrial machinery.