TIMKEN Bearing DX156221

This is the most basic and most widely used type of tapered roller bearing. It consists of two main separable parts: the cone (inner ring) assembly and the cup (outer ring). It is typically mounted in opposing pairs on a shaft.
Material: Bearing steels
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Specifications of TIMKEN Bearing DX156221

TIMKEN Bearing DX156221

Specifications

Cup Part Number

DX156221

Design Units

Imperial

Dimensions

D – Cup Outer Diameter

20.5625 in522.288 mm

C – Cup Width

2.4375 in61.913 mm

Abutment and Fillet Dimensions

r – Cup Backface “To Clear” Radius1

0.130 in3.3 mm

Da – Cup Frontface Backing Diameter

19.72 in500.89 mm

Db – Cup Backface Backing Diameter

19.41 in493.01 mm

Factors

e – ISO Factor2

0.39

Cg – Geometry Factor3

0.203

Product description of TIMKEN Bearing DX156221

TIMKEN Bearing DX156221, Tapered Roller Bearings - Single Cups - Imperial, Each tapered roller bearing contains four interdependent components: the cone (inner ring), the cup (outer ring), tapered rollers (rolling elements) and the cage (roller retainer). Tapered angles allow our bearings to efficiently control a combination of radial and thrust loads.

The steeper the outer ring angle, the greater ability the bearing has to handle thrust loads. To provide a true rolling motion of the rollers on the raceways, the extensions of the raceways and the tapered surfaces of the rollers come together at a common point, the apex, on the axis of rotation.

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.

TIMKEN Bearing DX156221, Tapered Roller Bearings - Single Cups - Imperial, Tapered bearings are manufactured to a number of specifications with each having classes that define tolerances on dimensions such as bore, O.D., width and runout. Metric bearings have been manufactured to corresponding standard negative tolerances. Boundary dimension tolerances for tapered roller bearing usage are listed in the following tables. These tolerances are provided for use in selecting bearings for general applications in conjunction with the bearing mounting and fitting practices offered in later sections. The following table summarizes the different specifications and classes for tapered roller bearings.

TIMKEN Bearing DX156221, Tapered Roller Bearings - Single Cups - Imperial. Often referred to as snap-ring assemblies, type 2S consist of two basic single-row bearings (type TS). They are supplied complete with inner-ring and outer-ring spacers to give a predetermined bearing setting when assembled. Type 2S have a specified setting range to suit the duty of the application. They have an inner-ring spacer and a snap-ring, which also serves as the outer-ring spacer, to give axial location in a through-bored housing.

Type SR are made to a standard setting range, based on Timken’s SET-RIGHT™ automated setting technique suitable for most industrial applications. They have two spacers and an optional snap-ring that may be used for axial location. Because both types are made up of popular sizes of single-row bearings, they provide a low-cost option for many applications. There are two basic mounting arrangements for spacer assemblies.

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Literature & catalogs

TIMKEN -LUBRICATION
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TIMKEN -TYPE- TDI
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TIMKEN-TAPERED ROLLER BEARING CAGES
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TIMKEN-TYPE- TS
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Videos

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