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Quality Metric and Imperial Taper Roller Bearings
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Our Range of Imperial and Metric Taper roller bearings is second to none, we stock all the major brands like Timken, SKF, NSK, KOYO, FAG, Nachi as well as being able to offer many sizes in budget alternative brands.


Single Row Taper Roller Bearings are separable radial bearings. They consist of the inner ring with roller set and cage assembly, (i.e. namely the cone), and a loose outer ring (i.e. namely the cup). AS single row Taper Roller Bearings are only able to accept thrust loads in one direction they must always be used in pairs where one bearing is adjusted against another one which guides the shaft in the opposite direction.

Taper roller bearings are suitable for both radial and thrust forces but also accept combined loads and tilting moments.

Taper Roller Bearings transfer the loads acting on the bearing at a certain angle, the so called alpha contact angle towards the shafts centre line, (see sketch below).

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The ability of taper roller bearings to accommodate axial loads depends on their contact angle alpha. The higher the angle the better the thrust load capability. The contact angle of most taper roller bearings lies between 10 deg and 16 deg.
Taper roller bearings of the series 313 are particularly adequate due to their comparatively large contact angle (approximate 30 deg), when high axial forces are to be considered.
NKE also produce single row taper roller bearings in several design variants, (e.g. with case carburised bearing rings or with flanges on outer rings) on customer request or order.
Misalignments not exceeding 1,5 angular minutes from their centre position, usually, do not negatively affect the function of single row taper roller bearings.
But it must be considered, that Taper Roller Bearings which run misaligned are subjected to considerable additional forces that will shorten their service life and generate high running noise levels.
NKE Taper Roller Bearings are produced in normal tolerance class (PN) as standard.

The ability of taper roller bearings to accommodate axial loads depends on their contact angle alpha. The higher the angle the better the thrust load capability. The contact angle of most taper roller bearings lies between 10 deg and 16 deg.
Taper roller bearings of the series 313 are particularly adequate due to their comparatively large contact angle (approximate 30 deg), when high axial forces are to be considered.
NKE also produce single row taper roller bearings in several design variants, (e.g. with case carburised bearing rings or with flanges on outer rings) on customer request or order.
Misalignments not exceeding 1.5 angular minutes from their centre position, usually, do not negatively affect the function of single row taper roller bearings. But it must be considered, that Taper Roller Bearings which run misaligned are subjected to considerable additional forces that will shorten their service life and generate high running noise levels. NKE Taper Roller Bearings are produced in normal tolerance class (PN) as standard.

NKE - Taper Roller Bearings are fitted with pressed steel cages as standard.
Because the cages of taper roller bearings usually protrude beyond the bearing faces, special care must be taken to follow the recommended abutment dimensions.

The axial play of taper roller bearings is controlled during mounting by adjusting one bearing against another.
The changes in shaft length, (e.g. caused by thermal expansion), leads to changes in operating clearance. For this reason the distance between bearing positions should be kept to a minimum.

For effective function of taper roller bearings a minimum load of approximately 2 per cent of the
dynamic load rating is required.

Abutment and fillet dimensions

Particularly with Taper Roller Bearings sufficient support of bearing rings by the adjacent parts is required due to the generated internal thrust force components.
To gain satisfactory support both the shaft shoulders as well as the housing shoulders must have a certain minimum height.

The bearing rings, however, must contact adjacent parts with their side faces only. The radii of bearing corners must not touch the shoulder fillet radii of neither the shaft nor housing shoulders. Therefore, the largest fillet radius must be kept smaller than the minimum fillet dimension of the bearing rings.

Pumping effect of oil lubrication
Unsymmetrical bearings, to which Taper Roller Bearings belong feature a certain pumping effect due to their internal design.
This effect may also be used to support the oil circulation in the lubricating circuit.

But in the case of an oil feed in the opposite direction an enlarged resistance against the oil flow must be taken into consideration.

All information courtesy and copyright NKE Bearings Austria www.nke.at


 

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