Original catalogue drawing - Timken TRB Catalog, page 250
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
66.675
2.625
D
Outside diameter
123.825
4.875
B
Inner-ring / bearing width
36.678
1.444
T
Overall assembly width
38.1
1.5
C
Cup / outer-ring width
30.162
1.1875
r
Chamfer (min)
3.3
0.1299
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)
66.675
Bore d (in)
2.6250
Outside dia. D (mm)
123.825
Outside dia. D (in)
4.8750
Width B (mm)
36.678
Overall width T (mm)
38.100
Overall width T (in)
1.5000
Cup width C (mm)
30.162
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
50800
Basic static load rating Cor (lbs)
55700
Basic dynamic load rating Cr (N)
226000
Basic static load rating C0r (N)
248000
Dynamic rating C1 (N, ISO)
226000
Dynamic rating C1 (lbf, ISO)
50800
Radial rating C90 (N)
58600
Radial rating C90 (lbf)
13200
Thrust rating Ca90 (N)
34700
Thrust rating Ca90 (lbf)
7810
Static rating C0 (N)
248000
Static rating C0 (lbf)
55700
Factor e
0.35
Factor Y
1.73
Factor K
1.69
Geometry factor G1
91.0
Geometry factor G2
21.1
Geometry factor Cg
0.1108
Effective load centre a (mm)
-9.4
Weight
Weight (kg)
1.89
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
3.5
Housing fillet r max (mm)
3.3
Shaft shoulder da (mm)
77.0
Shaft shoulder db (mm)
84.0
Housing shoulder Da (mm)
116.0
Housing shoulder Db (mm)
109.0
Cage projection Aa (mm)
2.3
Cage projection Ab (mm)
1.3
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
56,500
102
3,386
6
37,667
392
13,083
8
28,250
1,024
34,133
10
22,600
2,154
71,814
15
15,067
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 226,000 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.250 (dimensions)
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.
