Original catalogue drawing - Timken TRB Catalog, page 260
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
70
2.7559
D
Outside diameter
140
5.5118
B
Inner-ring / bearing width
35.5
1.3976
T
Overall assembly width
39
1.5354
C
Cup / outer-ring width
27
1.063
r
Chamfer (min)
3
0.1181
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)
70.000
Bore d (in)
2.7559
Outside dia. D (mm)
140.000
Outside dia. D (in)
5.5118
Width B (mm)
35.500
Overall width T (mm)
39.000
Overall width T (in)
1.5354
Cup width C (mm)
27.000
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
45800
Basic static load rating Cor (lbs)
57800
Basic dynamic load rating Cr (N)
204000
Basic static load rating C0r (N)
257000
Dynamic rating C1 (N, ISO)
204000
Dynamic rating C1 (lbf, ISO)
45800
Radial rating C90 (N)
52800
Radial rating C90 (lbf)
11900
Thrust rating Ca90 (N)
78300
Thrust rating Ca90 (lbf)
17600
Static rating C0 (N)
257000
Static rating C0 (lbf)
57800
Factor e
0.87
Factor Y
0.69
Factor K
0.67
Geometry factor G1
85.2
Geometry factor G2
23.4
Geometry factor Cg
0.0984
Effective load centre a (mm)
8.6
Weight
Weight (kg)
2.64
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
3.0
Housing fillet r max (mm)
3.0
Shaft shoulder da (mm)
82.0
Shaft shoulder db (mm)
95.0
Housing shoulder Da (mm)
133.0
Housing shoulder Db (mm)
117.0
Cage projection Aa (mm)
5.8
Cage projection Ab (mm)
4.5
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
51,000
102
3,386
6
34,000
392
13,083
8
25,500
1,024
34,133
10
20,400
2,154
71,814
15
13,600
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 204,000 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.260 (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.
