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Taper Roller bearings
Taper Roller bearings are generally separable, which means the cone assembly, consisting of the inner ring with roller and cage, can be mounted separately from the cup (outer ring). Being separable, mounting becomes easier. The projection lines of all the taper surfaces (Cup, Cone, and Roller) meet at a common point on the bearing axis, called the apex point, ensuring proper rolling motion of the roller on the track surfaces of cone and cup. NBC manufactures Single and Double Row Taper roller bearings in Inch and Metric series. These bearings are mainly used in the automotive industry such as Wheels, Transmissions and Axle Centres of Passenger Cars, MUVs, Trucks, Tractors, Earthmovers, etc. where RPM is moderate and combination loads (i.e. simultaneously both axial and radial loads) are prevalent.
Single Row Taper roller Bearing
Taper roller bearing have cup, cone and rollers which are tapered in shape. The rollers are restrained by a flange on the cone, against which their large end slides. These bearings can take combined loads simultaneously i.e. radial and axial load. Projection lines of the cup and cone raceways and rollers meet at a common point on the bearing axis. The axial load carrying capacity of bearings increases with the increasing contact angle. Bearings are separable. Cup can be separated from cone assembly. Hence both can be mounted separately. The raceway and rollers have crown profiles. Improved surface finish of flange enable cooler running by forming a full lubrication film with roller head.
Double Row Taper Roller Bearing
In Double Row Taper Roller bearings, NBC provides both back-to-back arrangement (using double row outer rings) and face-to-face arrangement (using double row inner rings). These are adjusted to fix the clearance values of each type. Only parts with identical manufacturing numbers can be used and they must be assembled according to their code numbers.
The main characteristics are as follows:- An intermediate spacer is positioned between the two cups.
- The load lines converge towards the bearing axis.
- Axial loads acting in both directions can be accommodated by each bearing. Face-to-face arrangement (TDI)
Four-row tapered roller bearings
Four-row tapered roller bearings can accommodate radial and axial loads at low to moderate speeds. These bearings are specially designed for rolling mill applications. They are used in work roll and back up roll applications in rolling mills. The bearings may be in straight bore or tapered bore.
Tapered roller thrust bearings
It consist of tapered rollers arranged so that their axes all converge at a point on the axis of the bearing. They are used in pairs to accommodate axial thrust in either direction, as well as radial loads. They can support greater thrust loads than the ball type due to the larger contact area.
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