Original catalogue drawing - Timken TRB Catalog, page 276
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
80.962
3.1875
D
Outside diameter
146.05
5.75
B
Inner-ring / bearing width
38.1
1.5
T
Overall assembly width
38.1
1.5
C
Cup / outer-ring width
31.75
1.25
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)
80.962
Bore d (in)
3.1875
Outside dia. D (mm)
146.050
Outside dia. D (in)
5.7500
Width B (mm)
38.100
Overall width T (mm)
38.100
Overall width T (in)
1.5000
Cup width C (mm)
31.750
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
55500
Basic static load rating Cor (lbs)
75300
Basic dynamic load rating Cr (N)
247000
Basic static load rating C0r (N)
335000
Dynamic rating C1 (N, ISO)
247000
Dynamic rating C1 (lbf, ISO)
55500
Radial rating C90 (N)
64000
Radial rating C90 (lbf)
14400
Thrust rating Ca90 (N)
44800
Thrust rating Ca90 (lbf)
10100
Static rating C0 (N)
335000
Static rating C0 (lbf)
75300
Factor e
0.41
Factor Y
1.47
Factor K
1.43
Geometry factor G1
136.6
Geometry factor G2
27.3
Geometry factor Cg
0.0919
Effective load centre a (mm)
-4.8
Weight
Weight (kg)
2.69
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
3.5
Housing fillet r max (mm)
3.3
Shaft shoulder da (mm)
91.0
Shaft shoulder db (mm)
98.0
Housing shoulder Da (mm)
139.0
Housing shoulder Db (mm)
131.0
Cage projection Aa (mm)
1.3
Cage projection Ab (mm)
2.1
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
61,750
102
3,386
6
41,167
392
13,083
8
30,875
1,024
34,133
10
24,700
2,154
71,814
15
16,467
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 247,000 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.276 (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.
