578W/572 is a Timken tapered roller bearing, bore 79.99 mm, O.D. 139.99 mm, width 36.1 mm, weight 2.24 kg. Dimensions, drawing, interchanges and price.
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
79.992
3.1493
D
Outside diameter
139.992
5.5115
B
Inner-ring / bearing width
36.098
1.4212
T
Overall assembly width
36.513
1.4375
C
Cup / outer-ring width
28.575
1.125
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)
79.992
Bore d (in)
3.1493
Outside dia. D (mm)
139.992
Outside dia. D (in)
5.5115
Width B (mm)
36.098
Width B (in)
1.4212
Overall width T (mm)
36.513
Overall width T (in)
1.4375
Cup width C (mm)
28.575
Cup width C (in)
1.1250
Weight
Cone weight (kg)
1.47
Cup weight (kg)
0.77
Total weight (kg)
2.24
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
3.5
Housing fillet r max (mm)
3.3
Source & traceability
Brand
Timken
Source catalogue
Timken Bearing Dimension Catalog
Catalogue page
p.314 (dimensions) / p.38 (cone) / p.38 (cup)
Dimensions and component weights only - this catalogue publishes no load ratings or speeds.
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.
