Original catalogue drawing - Timken TRB Catalog, page 606
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
660.4
26
D
Outside diameter
812.8
32
T
Overall assembly width
203.2
8
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)
660.400
Bore d (in)
26.0000
Outside dia. D (mm)
812.800
Outside dia. D (in)
32.0000
Overall width T (mm)
203.200
Overall width T (in)
8.0000
Cup width C (mm)
158.750
Cup width C (in)
6.2500
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
1070000
Basic dynamic load rating Cr (N)
4760000
Dynamic rating C1 (N, ISO)
4760000
Dynamic rating C1 (lbf, ISO)
1070000
Radial rating C90 (N)
709000
Radial rating C90 (lbf)
159000
Thrust rating Ca90 (N)
404000
Thrust rating Ca90 (lbf)
90700
Factor e
0.33
Factor Y1
2.03
Factor Y2
3.02
Factor K
1.76
Geometry factor G1
12635.6
Geometry factor G2
984.9
Geometry factor Cg
0.2968
Weight
Weight (kg)
214.58
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
6.4
Housing fillet r max (mm)
1.5
Shaft shoulder db (mm)
693.0
Housing shoulder Da (mm)
789.0
Pin dimension Ka (mm)
28.58
Pin dimension Kb (mm)
14.30
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
1,190,000
102
3,386
6
793,333
392
13,083
8
595,000
1,024
34,133
10
476,000
2,154
71,814
15
317,333
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 4,760,000 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.606 (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.
