Original catalogue drawing - Timken TRB Catalog, page 348
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
231.775
9.125
D
Outside diameter
268.288
10.5625
B
Inner-ring / bearing width
21.5
0.8465
T
Overall assembly width
22.5
0.8858
C
Cup / outer-ring width
18.5
0.7283
r
Chamfer (min)
2
0.0787
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)
231.775
Bore d (in)
9.1250
Outside dia. D (mm)
268.288
Outside dia. D (in)
10.5625
Width B (mm)
21.500
Overall width T (mm)
22.500
Overall width T (in)
0.8858
Cup width C (mm)
18.500
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
32900
Basic static load rating Cor (lbs)
78500
Basic dynamic load rating Cr (N)
146000
Basic static load rating C0r (N)
349000
Dynamic rating C1 (N, ISO)
146000
Dynamic rating C1 (lbf, ISO)
32900
Radial rating C90 (N)
37900
Radial rating C90 (lbf)
8520
Thrust rating Ca90 (N)
21600
Thrust rating Ca90 (lbf)
4850
Static rating C0 (N)
349000
Static rating C0 (lbf)
78500
Factor e
0.33
Factor Y
1.80
Factor K
1.76
Geometry factor G1
693.6
Geometry factor G2
584.8
Geometry factor Cg
0.1422
Effective load centre a (mm)
15.7
Weight
Weight (kg)
1.85
Cone weight (kg)
1.28
Cup weight (kg)
0.57
Total weight (kg)
1.85
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
2.0
Housing fillet r max (mm)
2.0
Shaft shoulder da (mm)
237.0
Shaft shoulder db (mm)
241.0
Housing shoulder Da (mm)
263.0
Housing shoulder Db (mm)
259.0
Cage projection Aa (mm)
0.2
Cage projection Ab (mm)
2.4
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
36,500
102
3,386
6
24,333
392
13,083
8
18,250
1,024
34,133
10
14,600
2,154
71,814
15
9,733
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 146,000 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.348 (dimensions) / p.148 (cone) / p.148 (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.
