478/472 is a Timken tapered roller bearing, bore 65 mm, O.D. 120 mm, width 29.01 mm, dynamic rating 143 kN. Dimensions, drawing, interchanges and price.
Original catalogue drawing - Timken TRB Catalog, page 244
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
65
2.5591
D
Outside diameter
120
4.7244
B
Inner-ring / bearing width
29.007
1.142
T
Overall assembly width
29.794
1.173
C
Cup / outer-ring width
24.237
0.9542
r
Chamfer (min)
2
0.0787
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)
65.000
Bore d (in)
2.5591
Outside dia. D (mm)
120.000
Outside dia. D (in)
4.7244
Width B (mm)
29.007
Overall width T (mm)
29.794
Overall width T (in)
1.1730
Cup width C (mm)
24.237
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
32200
Basic static load rating Cor (lbs)
41900
Basic dynamic load rating Cr (N)
143000
Basic static load rating C0r (N)
186000
Dynamic rating C1 (N, ISO)
143000
Dynamic rating C1 (lbf, ISO)
32200
Radial rating C90 (N)
37200
Radial rating C90 (lbf)
8360
Thrust rating Ca90 (N)
24500
Thrust rating Ca90 (lbf)
5500
Static rating C0 (N)
186000
Static rating C0 (lbf)
41900
Factor e
0.38
Factor Y
1.56
Factor K
1.52
Geometry factor G1
77.2
Geometry factor G2
23.0
Geometry factor Cg
0.1083
Effective load centre a (mm)
-4.1
Weight
Weight (kg)
1.43
Cone weight (kg)
0.94
Cup weight (kg)
0.49
Total weight (kg)
1.43
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
2.3
Housing fillet r max (mm)
2.0
Shaft shoulder da (mm)
73.0
Shaft shoulder db (mm)
77.0
Housing shoulder Da (mm)
114.0
Housing shoulder Db (mm)
107.0
Cage projection Aa (mm)
1.5
Cage projection Ab (mm)
2.2
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
35,750
102
3,386
6
23,833
392
13,083
8
17,875
1,024
34,133
10
14,300
2,154
71,814
15
9,533
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 143,000 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.244 (dimensions) / p.32 (cone) / p.32 (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.
