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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 861 - 854-B  
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Part Number 861 - 854-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
855

Cone Part Number
861

Cup Part Number
854-B

Design Unit
Inch

Cage Material
Stamped Steel


Dimensions

d - Bore
4 in
101.600 mm

D - Cup Outer Diameter
7.5 in
190.5 mm

D1 - Flange Outer Diameter
7.8710 in
199.923 mm

B - Cone Width
2.2650 in
57.531 mm

C - Cup Width
1.7500 in
44.450 mm

C1 - Cup Flange Width
0.3750 in
9.525 mm

T1 - Bearing Width to Flange
0.8750 in
22.225 mm


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
0.310 in
7.900 mm

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

da - Cone Frontface Backing Diameter
4.65 in
118 mm

db - Cone Backface Backing Diameter
5.2 in
132 mm

Da - Cup Frontface Backing Diameter
6.86 in
174.24 mm

Ab - Cage-Cone Frontface Clearance
0.06 in
1.5 mm

Aa - Cage-Cone Backface Clearance
0.15 in
3.8 mm

a - Effective Center Location3
-0.6 in
-15.2 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
26700 lbf
119000 N

C1 - Dynamic Radial Rating (1 million revolutions)2
103000 lbf
458000 N

C0 - Static Radial Rating
142000 lbf
630000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
15300 lbf
68000 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
1.74

e - ISO Factor2
0.33

Y - ISO Factor3
1.79

G1 - Heat Generation Factor (Roller-Raceway)
264.1

G2 - Heat Generation Factor (Rib-Roller End)
44.9

Cg - Geometry Factor4
0.107
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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