Original catalogue drawing - Timken TRB Catalog, page 538
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
69.914
2.7525
D
Outside diameter
177.8
7
T
Overall assembly width
109.538
4.3125
C
Cup / outer-ring width
74.612
2.9375
r
Chamfer (min)
2.3
0.0906
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)
69.914
Bore d (in)
2.7525
Outside dia. D (mm)
177.800
Outside dia. D (in)
7.0000
Overall width T (mm)
109.538
Overall width T (in)
4.3125
Cup width C (mm)
74.612
Cup width C (in)
2.9375
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
142000
Basic dynamic load rating Cr (N)
632000
Dynamic rating C1 (N, ISO)
632000
Dynamic rating C1 (lbf, ISO)
142000
Radial rating C90 (N)
94100
Radial rating C90 (lbf)
21200
Thrust rating Ca90 (N)
123000
Thrust rating Ca90 (lbf)
27700
Factor e
0.76
Factor Y1
0.88
Factor Y2
1.31
Factor K
0.76
Geometry factor G1
117.9
Geometry factor G2
18.6
Geometry factor Cg
0.1053
Weight
Weight (kg)
12.79
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
3.5
Housing fillet r max (mm)
2.3
Shaft shoulder db (mm)
101.0
Housing shoulder Da (mm)
164.0
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
158,000
102
3,386
6
105,333
392
13,083
8
79,000
1,024
34,133
10
63,200
2,154
71,814
15
42,133
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 632,000 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.538 (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.
