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
177.8
7
D
Outside diameter
319.964
12.597
B
Inner-ring / bearing width
3.5
0.1378
T
Overall assembly width
88.9
3.5
C
Cup / outer-ring width
65.088
2.5625
r
Chamfer (min)
4.8
0.189
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)
177.800
Bore d (in)
7.0000
Outside dia. D (mm)
319.964
Outside dia. D (in)
12.5970
Width B (mm)
3.5
Width B (in)
3.3750
Overall width T (mm)
88.900
Overall width T (in)
3.5000
Cup width C (mm)
65.088
Cup width C (in)
2.5625
Weight
Cone weight (kg)
19.42
Cup weight (kg)
9.37
Total weight (kg)
28.79
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
19.42
Housing fillet r max (mm)
4.8
Source & traceability
Brand
Timken
Source catalogue
Timken Bearing Dimension Catalog
Catalogue page
p.322 (dimensions) / p.135 (cone) / p.135 (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.
