The main dimensions of the tapered roller bearings comply with DIN ISO 355 and DIN 720. Dimensional and running tolerances match tolerance category PN acc. to DIN 620. These tolerance classes are standard and so are perfect for most applications.

The bearings are separable. This implies the bearing parts could be fitted independently of every different. The bearings are supplied without seals. They are often lubricated with grease or oil from the side.

The rollers are processed to create pore-like micro indents in the top of steel (rolling contact area and roller head). This microstructure helps maintain an oil film that’s perfect for tapered roller bearing applications. Improved essential oil film retention drastically inhibits surface damage, attaining more than eight moments higher durability and equal or higher seizure resistance in comparison to conventional products.
Better lubricant oil accumulation and retention (better to form oil film) in the roller surface contributes to 10% lower friction at low speeds compared to conventional products.
Tapered roller bearings can accept large radial and axial loads. Axial loads are absorbed in mere one direction. For axial counter support another bearing attached inverse is required. Ideal for medium speeds.

Bigger efficiency transmission systems have emerged as key to enhancing gasoline economy, so NSK set out to develop a high reliability bearing with the capacity of overcoming these hurdles.

To improve fuel economy, there has been a shift to using less lubricant and/or reduced viscosity lubricant in transmitting systems. Because of this, tapered roller bearings in transmissions happen to be being subject to increasingly severe lubrication circumstances, increasing the risk of lubrication essential oil film depletion (lean lubrication circumstances), surface destruction, and bearing seizure.