Original catalogue drawing - Timken TRB Catalog, page 556
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
109.987
4.3302
D
Outside diameter
159.987
6.2987
T
Overall assembly width
74.612
2.9375
C
Cup / outer-ring width
58.738
2.3125
r
Chamfer (min)
0.8
0.0315
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)
109.987
Bore d (in)
4.3302
Outside dia. D (mm)
159.987
Outside dia. D (in)
6.2987
Overall width T (mm)
74.612
Overall width T (in)
2.9375
Cup width C (mm)
58.738
Cup width C (in)
2.3125
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
76600
Basic dynamic load rating Cr (N)
341000
Dynamic rating C1 (N, ISO)
341000
Dynamic rating C1 (lbf, ISO)
76600
Radial rating C90 (N)
50700
Radial rating C90 (lbf)
11400
Thrust rating Ca90 (N)
34900
Thrust rating Ca90 (lbf)
7850
Factor e
0.40
Factor Y1
1.68
Factor Y2
2.50
Factor K
1.45
Geometry factor G1
231.6
Geometry factor G2
63.4
Geometry factor Cg
0.1576
Weight
Weight (kg)
4.71
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
8.0
Housing fillet r max (mm)
0.8
Shaft shoulder db (mm)
133.0
Housing shoulder Da (mm)
154.0
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
85,250
102
3,386
6
56,833
392
13,083
8
42,625
1,024
34,133
10
34,100
2,154
71,814
15
22,733
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 341,000 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.556 (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.
