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 LM742749 - LM742710-B  

Part Number LM742749 - LM742710-B, Tapered Roller Bearings - TSF (Tapered Single with Flange) Imperial

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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.




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

Specifications

Series
LM742700

Cone Part Number
LM742749

Cup Part Number
LM742710-B

Design Unit
Inch

Cage Material
Stamped Steel

Related Assembly Number(s)
LM742749-90033
LM742749-903D1


Dimensions

d - Bore
8 1/2 in
215.900 mm

D - Cup Outer Diameter
11.25 in
285.750 mm

D1 - Flange Outer Diameter
11.5624 in
293.685 mm

B - Cone Width
1.8125 in
46.038 mm

C - Cup Width
1.3750 in
34.925 mm

C1 - Cup Flange Width
0.3125 in
7.938 mm

T1 - Bearing Width to Flange
0.75 in
19.05 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
8.94 in
227 mm

db - Cone Backface Backing Diameter
9.17 in
233 mm

Da - Cup Frontface Backing Diameter
11.06 in
279.91 mm

Ab - Cage-Cone Frontface Clearance
0.12 in
3 mm

Aa - Cage-Cone Backface Clearance
0.18 in
4.6 mm

a - Effective Center Location3
0.56 in
14.2 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
25000 lbf
111000 N

C1 - Dynamic Radial Rating (1 million revolutions)2
96600 lbf
430000 N

C0 - Static Radial Rating
200000 lbf
892000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
20600 lbf
91800 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
1.21

e - ISO Factor2
0.48

Y - ISO Factor3
1.25

G1 - Heat Generation Factor (Roller-Raceway)
867

G2 - Heat Generation Factor (Rib-Roller End)
225

Cg - Geometry Factor4
0.139
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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