Original catalogue drawing - Timken TRB Catalog, page 272
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
76.2
3
D
Outside diameter
177.8
7
B
Inner-ring / bearing width
50.8
2
T
Overall assembly width
55.562
2.1875
C
Cup / outer-ring width
34.925
1.375
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)
76.200
Bore d (in)
3.0000
Outside dia. D (mm)
177.800
Outside dia. D (in)
7.0000
Width B (mm)
50.800
Overall width T (mm)
55.562
Overall width T (in)
2.1875
Cup width C (mm)
34.925
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
81600
Basic static load rating Cor (lbs)
78800
Basic dynamic load rating Cr (N)
363000
Basic static load rating C0r (N)
351000
Dynamic rating C1 (N, ISO)
363000
Dynamic rating C1 (lbf, ISO)
81600
Radial rating C90 (N)
94100
Radial rating C90 (lbf)
21200
Thrust rating Ca90 (N)
123000
Thrust rating Ca90 (lbf)
27700
Static rating C0 (N)
351000
Static rating C0 (lbf)
78800
Factor e
0.76
Factor Y
0.79
Factor K
0.76
Geometry factor G1
117.9
Geometry factor G2
18.6
Geometry factor Cg
0.1053
Effective load centre a (mm)
1.3
Weight
Weight (kg)
6.05
Cup weight (kg)
2.19
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
3.5
Housing fillet r max (mm)
3.3
Shaft shoulder da (mm)
98.2
Shaft shoulder db (mm)
105.0
Housing shoulder Da (mm)
164.0
Housing shoulder Db (mm)
148.0
Cage projection Aa (mm)
12.1
Cage projection Ab (mm)
2.3
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
90,750
102
3,386
6
60,500
392
13,083
8
45,375
1,024
34,133
10
36,300
2,154
71,814
15
24,200
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 363,000 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.272 (dimensions) / p.62 (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.
