The main dimensions of the tapered roller bearings comply with DIN ISO 355 and DIN 720. Dimensional and running tolerances match tolerance course PN acc. to DIN 620. These tolerance classes are standard and are well suited for most applications.
The bearings are separable. This means the bearing parts can be fitted independently of every additional. 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 surface of the steel (rolling contact area and roller head). This microstructure helps maintain an oil film that's well suited for tapered roller bearing applications. Improved oil film retention drastically inhibits surface damage, reaching more than eight situations higher toughness and equal or better seizure resistance in comparison to conventional products.
Superior 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 excessive radial and axial loads. Axial loads happen to be absorbed in mere one way. For axial counter support a second bearing installed inverse is required. Suitable for medium speeds.
Higher efficiency Tapered Roller Bearing china transmission systems have emerged as key to bettering gas economy, so NSK set out to develop a large reliability bearing with the capacity of overcoming these hurdles.
To improve fuel economy, there's been a shift to using less lubricant and/or cheaper viscosity lubricant in transmission systems. Due to this fact, tapered roller bearings in transmissions are being at the mercy of increasingly severe lubrication conditions, increasing the risk of lubrication oil film depletion (lean lubrication conditions), surface damage, and bearing seizure.