Original catalogue drawing - Timken TRB Catalog, page 640
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
749.3
29.5
D
Outside diameter
1066.8
42
B
Inner-ring / bearing width
349.25
13.75
T
Overall assembly width
361.95
14.25
r
Chamfer (min)
12.7
0.5
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)
749.300
Bore d (in)
29.5000
Outside dia. D (mm)
1066.800
Outside dia. D (in)
42.0000
Width B (mm)
349.250
Width B (in)
13.7500
Overall width T (mm)
361.950
Overall width T (in)
14.2500
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
2790000
Basic dynamic load rating Cr (N)
12400000
Dynamic rating C1 (N, ISO)
12400000
Dynamic rating C1 (lbf, ISO)
2790000
Radial rating C90 (N)
1850000
Radial rating C90 (lbf)
415000
Thrust rating Ca90 (N)
1040000
Thrust rating Ca90 (lbf)
234000
Factor e
0.3
Factor Y1
2.1
Factor Y2
3.1
Factor K
1.77
Geometry factor G1
21246.2
Geometry factor G2
980.3
Geometry factor Cg
0.3551
Weight
Weight (kg)
1054.26
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
9.5
Housing fillet r max (mm)
12.7
Shaft shoulder da (mm)
806.5
Housing shoulder Db (mm)
996.0
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
3,100,000
102
3,386
6
2,066,667
392
13,083
8
1,550,000
1,024
34,133
10
1,240,000
2,154
71,814
15
826,667
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 12,400,000 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.640 (dimensions)
Series type
TDI
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.
