The main measurements 
of the tapered roller bearings comply with DIN ISO 355 and DIN 720. Dimensional and running tolerances correspond to tolerance school PN acc. to DIN 620. These tolerance classes are standard and so are well suited for most applications.
The bearings are separable. This implies the bearing parts could be fitted independently of each different. The bearings are supplied without seals. They can be lubricated with grease or essential oil from the side.
The rollers are processed to create pore-like micro indents in the surface of the steel (rolling contact area and roller brain). This microstructure helps preserve an oil film that is perfect for tapered roller bearing applications. Improved oil film retention significantly inhibits surface damage, achieving more than eight situations higher strength and equal or greater seizure resistance compared to conventional products.
Improved lubricant oil accumulation and retention (simpler to form oil film) in the roller surface plays a part in 10% lower friction for low speeds in comparison to conventional products.
Tapered roller bearings may accept substantial radial and axial loads. Axial loads will be absorbed in mere one direction. For axial counter support another bearing installed inverse is required. Ideal for medium speeds.
Tapered Roller Bearing china Bigger efficiency transmission systems are seen as key to bettering fuel economy, so NSK set out to develop a large reliability bearing capable of overcoming these hurdles.
To improve fuel economy, there’s been a shift to using less lubricant and/or reduced viscosity lubricant in transmitting systems. Consequently, tapered roller bearings in transmissions are being subject to increasingly severe lubrication circumstances, increasing the risk of lubrication oil film depletion (lean lubrication conditions), surface harm, and bearing seizure.