4388/4320 is a Timken tapered roller bearing, bore 41.27 mm, O.D. 88.5 mm, width 40.39 mm, weight 1.18 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
41.275
1.625
D
Outside diameter
88.5
3.4843
B
Inner-ring / bearing width
40.386
1.59
T
Overall assembly width
39.687
1.5625
C
Cup / outer-ring width
33.338
1.3125
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)
41.275
Bore d (in)
1.6250
Outside dia. D (mm)
88.500
Outside dia. D (in)
3.4843
Width B (mm)
40.386
Width B (in)
1.5900
Overall width T (mm)
39.687
Overall width T (in)
1.5625
Cup width C (mm)
33.338
Cup width C (in)
1.3125
Weight
Cone weight (kg)
0.8
Cup weight (kg)
0.38
Total weight (kg)
1.18
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.307 (dimensions) / p.57 (cone) / p.31 (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.
