3977/3919RB is a Timken tapered roller bearing, bore 60 mm, O.D. 112.71 mm, width 30.05 mm, weight 1.28 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
60
2.3622
D
Outside diameter
112.712
4.4375
B
Inner-ring / bearing width
30.048
1.183
T
Overall assembly width
30.162
1.1875
C
Cup / outer-ring width
24.605
0.9687
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)
60.000
Bore d (in)
2.3622
Outside dia. D (mm)
112.712
Outside dia. D (in)
4.4375
Width B (mm)
30.048
Width B (in)
1.1830
Overall width T (mm)
30.162
Overall width T (in)
1.1875
Cup width C (mm)
24.605
Cup width C (in)
.9687
Weight
Cone weight (kg)
0.86
Cup weight (kg)
0.42
Total weight (kg)
1.28
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.311 (dimensions) / p.55 (cone) / p.55 (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.
