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All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - TSF (Tapered Single with Flange) > Tapered Roller Bearings - TSF (Tapered Single with Flange) Imperial > Part Number 745 - 742-B  
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Part Number 745 - 742-B, Tapered Roller Bearings - TSF (Tapered Single with Flange) Imperial


Like the TS bearing design, the TSF design 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. TSF bearings have flanged cups to facilitate axial location and accurately align seals in through-bored housings.



Unit of Measure: Imperial Metric Both

Specifications  · Dimensions  · Abutment and Fillet Dimensions  · Basic Load Ratings  · Factors

Specifications

Series
745

Cone Part Number
745

Cup Part Number
742-B

Design Unit
Inch

Cage Material
Stamped Steel


Dimensions

d - Bore
2.3595 in
59.931 mm

D - Cup Outer Diameter
5.9090 in
150.089 mm

D1 - Flange Outer Diameter
6.2170 in
157.912 mm

B - Cone Width
1.8375 in
46.673 mm

C - Cup Width
1.4375 in
36.513 mm

C1 - Cup Flange Width
0.3125 in
7.938 mm

T1 - Bearing Width to Flange
0.6250 in
15.875 mm


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
0.14 in
3.600 mm

r - Cup Backface "To Clear" Radius2
0.130 in
3.30 mm

da - Cone Frontface Backing Diameter
2.95 in
75 mm

db - Cone Backface Backing Diameter
3.19 in
81 mm

Da - Cup Frontface Backing Diameter
5.64 in
143.26 mm

Ab - Cage-Cone Frontface Clearance
0.08 in
2 mm

Aa - Cage-Cone Backface Clearance
0.05 in
1.3 mm

a - Effective Center Location3
-0.47 in
-11.9 mm
1 These maximum fillet radii will be cleared by the bearing corners.
2 These maximum fillet radii will be cleared by the bearing corners.
3 Negative value indicates effective center inside cone backface.


Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)1
18500 lbf
82400 N

C1 - Dynamic Radial Rating (1 million revolutions)2
71400 lbf
318000 N

C0 - Static Radial Rating
93800 lbf
417000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
10300 lbf
45900 N
1 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
2 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
3 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(2) is the two-row radial value.


Factors

K - Factor1
1.8

e - ISO Factor2
0.33

Y - ISO Factor3
1.84

G1 - Heat Generation Factor (Roller-Raceway)
159.6

G2 - Heat Generation Factor (Rib-Roller End)
26.3

Cg - Geometry Factor4
0.0898
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.


 MORE IMAGES 

·  Timken_TRB_1ROWASSY_TSF_32312BM-90KM2-S

·  Timken_TRB_1ROWASSY_TSF_32312BM-90KM2-T



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