Original catalogue drawing - Timken TRB Catalog, page 340
Scanned from the manufacturer catalogue page listing this part number. All part numbers printed on that table share the same drawing.
Scale cross-section
Blue = inner / outer ring, yellow = rolling element. Drawn to scale from this part's own
dimensions for selection reference only - not a manufacturing or assembly drawing.
Dimension table (mm / inch)
Symbol
Dimension
mm
inch
d
Bore diameter
203.2
8
D
Outside diameter
261.142
10.2812
B
Inner-ring / bearing width
27.783
1.0938
T
Overall assembly width
28.575
1.125
C
Cup / outer-ring width
21.433
0.8438
r
Chamfer (min)
1.5
0.0591
Notes
Tapered roller bearings are cone / cup assemblies; cone and cup weights are listed separately and the total is their sum. Weights are given in kg. Load ratings are shown in both the original catalogue units and the converted value (1 N = 0.2248 lbf). Data is provided for selection reference only - confirm against the latest official catalogue before ordering.
Main dimensions
Bore d (mm)
203.200
Bore d (in)
8.0000
Outside dia. D (mm)
261.142
Outside dia. D (in)
10.2812
Width B (mm)
27.783
Overall width T (mm)
28.575
Overall width T (in)
1.1250
Cup width C (mm)
21.433
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
46700
Basic static load rating Cor (lbs)
91100
Basic dynamic load rating Cr (N)
208000
Basic static load rating C0r (N)
405000
Dynamic rating C1 (N, ISO)
208000
Dynamic rating C1 (lbf, ISO)
46700
Radial rating C90 (N)
53900
Radial rating C90 (lbf)
12100
Thrust rating Ca90 (N)
37700
Thrust rating Ca90 (lbf)
8480
Static rating C0 (N)
405000
Static rating C0 (lbf)
91100
Factor e
0.41
Factor Y
1.47
Factor K
1.43
Geometry factor G1
521.9
Geometry factor G2
231.1
Geometry factor Cg
0.1398
Effective load centre a (mm)
15.7
Weight
Weight (kg)
3.48
Cone weight (kg)
2.47
Cup weight (kg)
1.05
Total weight (kg)
3.52
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
1.5
Housing fillet r max (mm)
1.5
Shaft shoulder da (mm)
212.0
Shaft shoulder db (mm)
214.0
Housing shoulder Da (mm)
254.0
Housing shoulder Db (mm)
249.0
Cage projection Aa (mm)
3.1
Cage projection Ab (mm)
1.7
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
52,000
102
3,386
6
34,667
392
13,083
8
26,000
1,024
34,133
10
20,800
2,154
71,814
15
13,867
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 208,000 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.
Source & traceability
Brand
Timken
Source catalogue
Timken Tapered Roller Bearing Catalog (2016)
Catalogue page
p.340 (dimensions) / p.198 (cone) / p.198 (cup)
Series type
TS
ISO dynamic rating C1, Timken C90 / Ca90, static rating C0, geometry factors and assembly weight.
Send us the quantity you need and we will come back with price and
lead time, normally within 24 hours. Equivalent parts from other brands can be quoted at the same time.
