Original catalogue drawing - Timken TRB Catalog, page 274
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
79.375
3.125
D
Outside diameter
161.925
6.375
B
Inner-ring / bearing width
48.26
1.9
T
Overall assembly width
47.625
1.875
C
Cup / outer-ring width
38.1
1.5
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)
79.375
Bore d (in)
3.1250
Outside dia. D (mm)
161.925
Outside dia. D (in)
6.3750
Width B (mm)
48.260
Overall width T (mm)
47.625
Overall width T (in)
1.8750
Cup width C (mm)
38.100
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
73600
Basic static load rating Cor (lbs)
99200
Basic dynamic load rating Cr (N)
327000
Basic static load rating C0r (N)
441000
Dynamic rating C1 (N, ISO)
327000
Dynamic rating C1 (lbf, ISO)
73600
Radial rating C90 (N)
84800
Radial rating C90 (lbf)
19100
Thrust rating Ca90 (N)
49500
Thrust rating Ca90 (lbf)
11100
Static rating C0 (N)
441000
Static rating C0 (lbf)
99200
Factor e
0.34
Factor Y
1.76
Factor K
1.71
Geometry factor G1
177.2
Geometry factor G2
29.4
Geometry factor Cg
0.0945
Effective load centre a (mm)
-11.9
Weight
Weight (kg)
4.53
Cone weight (kg)
2.89
Cup weight (kg)
1.59
Total weight (kg)
4.48
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
8.0
Housing fillet r max (mm)
3.3
Shaft shoulder da (mm)
94.0
Shaft shoulder db (mm)
109.0
Housing shoulder Da (mm)
150.0
Housing shoulder Db (mm)
144.0
Cage projection Aa (mm)
3.2
Cage projection Ab (mm)
1.0
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
81,750
102
3,386
6
54,500
392
13,083
8
40,875
1,024
34,133
10
32,700
2,154
71,814
15
21,800
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 327,000 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.274 (dimensions) / p.43 (cone) / p.43 (cup)
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.
