Original catalogue drawing - Timken TRB Catalog, page 604
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
602.945
23.738
D
Outside diameter
787.4
31
T
Overall assembly width
206.375
8.125
C
Cup / outer-ring width
158.75
6.25
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)
602.945
Bore d (in)
23.7380
Outside dia. D (mm)
787.400
Outside dia. D (in)
31.0000
Overall width T (mm)
206.375
Overall width T (in)
8.1250
Cup width C (mm)
158.750
Cup width C (in)
6.2500
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
852000
Basic dynamic load rating Cr (N)
3790000
Dynamic rating C1 (N, ISO)
3790000
Dynamic rating C1 (lbf, ISO)
852000
Radial rating C90 (N)
565000
Radial rating C90 (lbf)
127000
Thrust rating Ca90 (N)
358000
Thrust rating Ca90 (lbf)
80600
Factor e
0.37
Factor Y1
1.82
Factor Y2
2.71
Factor K
1.58
Geometry factor G1
8978.8
Geometry factor G2
1193.1
Geometry factor Cg
0.2746
Weight
Weight (kg)
243.77
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
6.4
Housing fillet r max (mm)
1.5
Shaft shoulder db (mm)
642.0
Housing shoulder Da (mm)
755.3
Pin dimension Ka (mm)
28.58
Pin dimension Kb (mm)
15.87
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
947,500
102
3,386
6
631,667
392
13,083
8
473,750
1,024
34,133
10
379,000
2,154
71,814
15
252,667
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 3,790,000 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.604 (dimensions)
Series type
TDO
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.
