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Introduction for SDVV Tapered roller bearings types

Introduction for SDVV Tapered roller bearings types

Introduction for SDVV Tapered roller bearings types

Single-Row Bearings


TS - Single-row

This is the basic and the most widely used type of tapered roller bearing. It consists of the inner-ring assembly and the outer ring. 

It is usually fitted as one of an opposing pair. During equipment assembly, single-row bearings can be set to the required clearance (endplay) or preload condition to optimize performance.



TSF - Single-row, with flanged outer ring


The TSF type is a variation on the basic single-row bearing. 

TSF bearings have a flanged outer ring to facilitate axial location and accurately aligned seats in a through-bored housing.


Double-Row Bearings

TDO - Double outer ring

This has a one-piece (double) outer ring and two single inner rings. It is usually supplied complete with an inner-ring spacer as a pre-set assembly. 

This configuration gives a wide effective bearing spread and is frequently chosen for applications where overturning moments are a significant load component. 

TDO bearings can be used in fixed (locating) positions or allowed to float in the housing bore, for example, to compensate for shaft expansion. TDOCD outer rings also are available in most sizes.

These outer rings have holes in the O.D. that permit the use of pins to prevent outer ring rotation in the housing.



TDI - Double inner ring

TDIT - Double inner ring with tapered ball

Both comprise a one-piece (double) inner ring and two single outer rings. They are usually supplied complete with an outerring spacer as a pre-set assembly. 

TDI and TDIT bearings can be used at fixed (locating) positions on rotating shaft applications.

For rotating housing applications, the double inner ring of type TDI can be used to float on the stationary shaft. Type TDIT has a tapered bore to facilitate removal when an interference fit is essential, yet regular removal is required.


TNA - Non-adjustable

TNASW - Non-adjustable with lubricant slots

TNASWE - Non-adjustable with lubricant slots and extended back face rib

These three bearing types are similar to the TDO with a one-piece (double) outer ring and two single inner rings. The inner-ring front faces are extended so they abut, eliminating the need for a separate inner-ring spacer. 

Supplied with a built-in clearance to give a standard setting range, these bearings provide a solution for many fixed or floating bearing applications where optimum simplicity of assembly is required.


Types TNASW and TNASWE are variations having chamfers and slots on the front face of the inner ring to provide lubrication through the shaft.

 Type TNASWE have extended back face ribs on the inner rings which are ground on the O.D. to allow for the use of a seal or stamped closure. These designs are typically used on stationary shaft applications.


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