Four row tapered roller bearings

1. Structural features:

It usually consists of two double-row inner rings, a double-row outer ring and two single outer rings. There is an inner spacer ring between the two inner rings, and there are two middle spacer rings between the three outer rings. Such a design The bearing can adjust the clearance to adapt to different working conditions.

The inner and outer rings have tapered raceways, and tapered rollers are installed between the raceways. As the tapered surfaces extend, they eventually converge at a point on the bearing axis.

2. Functions and uses:

The radial and axial load capacities are both large, and the radial load capacity is about three times that of a single row, and can withstand large bidirectional axial loads.

It can limit the axial displacement of the shaft (or housing) in both directions within the axial clearance range of the bearing, so it can be used for bidirectional axial positioning.

It is mainly used in the work rolls of hot rolling mills and cold rolling mills, as well as the rolls of blanking machines. In addition, it is also suitable for the spindles and main load-bearing parts of heavy machinery such as metallurgical equipment, mining machinery, and construction machinery.

3. Precautions for use:

Since four-row tapered roller bearings generally do not allow the shaft to tilt relative to the hole, if there is a tilt, the rollers and raceways of the bearing will generate additional stress, thereby increasing the load on the bearing and shortening its service life.

The limit speed is low, so the speed requirements of the equipment need to be considered when selecting and using it.

In addition, four-row tapered roller bearings can be divided into sealed and unsealed types according to their structures to adapt to different working environments and needs. At the same time, in order to ensure the normal operation and extend the service life of the bearings, regular maintenance and upkeep is required.

In general, four-row tapered roller bearings play an important role in the industrial field due to their high load capacity, high rigidity and high speed resistance. However, the specific selection and use of which type of four-row tapered roller bearing needs to be comprehensively considered based on the specific working conditions, load requirements, maintenance and other factors of the equipment.

Tapered Roller Bearings | CHG Bearing (chg-bearing.com)