Part Number 05185A, Tapered Roller Bearings - Single Cups

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All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - Single Cups > Tapered Roller Bearings - Single Cups - Imperial > Part Number 05185A


	Part Number 05185A, Tapered Roller Bearings - Single Cups - Imperial

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.

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Unit of Measure: Imperial Metric Both

Specifications · Dimensions · Abutment and Fillet Dimensions · Factors

Specifications

Series		05000

Cup Part Number		05185A

Design Units		Imperial

Dimensions

D - Cup Outer Diameter		1.8497 in 46.982 mm

C - Cup Width		0.4375 in 11.113 mm

Abutment and Fillet Dimensions

r - Cup Backface "To Clear" Radius¹

0.06 in
1.52 mm

Da - Cup Frontface Backing Diameter

1.69 in
42.93 mm

Db - Cup Backface Backing Diameter

1.59 in
40.39 mm

¹ These maximum fillet radii will be cleared by the bearing corners.

Factors

K - Factor¹

1.64

e - ISO Factor²

0.36

Y - ISO Factor³

1.68

G1 - Heat Generation Factor (Roller-Raceway)

5.8

G2 - Heat Generation Factor (Rib-Roller End)

5.55

Cg - Geometry Factor⁴

0.0448

¹ These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
² These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
³ These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
⁴ Geometry constant for Lubrication Life Adjustment Factor a3l.

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Part Number 05185A, Tapered Roller Bearings - Single Cups - Imperial

Series

Cup Part Number

Design Units

D - Cup Outer Diameter

C - Cup Width

r - Cup Backface "To Clear" Radius1

Da - Cup Frontface Backing Diameter

Db - Cup Backface Backing Diameter

K - Factor1

e - ISO Factor2

Y - ISO Factor3