Original catalogue drawing - Timken TRB Catalog, page 642
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
37.037
1.4581
D
Outside diameter
72
2.8346
B
Inner-ring / bearing width
38.1
1.5
T
Overall assembly width
39.096
1.5392
r
Chamfer (min)
1.5
0.0591
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)
37.037
Bore d (in)
1.4581
Outside dia. D (mm)
72.000
Outside dia. D (in)
2.8346
Width B (mm)
38.100
Width B (in)
1.5000
Overall width T (mm)
39.096
Overall width T (in)
1.5392
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
18700
Basic dynamic load rating Cr (N)
83400
Dynamic rating C1 (N, ISO)
83400
Dynamic rating C1 (lbf, ISO)
18700
Radial rating C90 (N)
12400
Radial rating C90 (lbf)
2790
Thrust rating Ca90 (N)
9440
Thrust rating Ca90 (lbf)
2120
Factor e
0.44
Factor Y1
1.52
Factor Y2
2.26
Factor K
1.31
Geometry factor G1
17.5
Geometry factor G2
11.5
Geometry factor Cg
0.0694
Weight
Weight (kg)
0.71
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
0.8
Housing fillet r max (mm)
1.5
Housing shoulder Db (mm)
63.0
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
20,850
102
3,386
6
13,900
392
13,083
8
10,425
1,024
34,133
10
8,340
2,154
71,814
15
5,560
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 83,400 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.642 (dimensions)
Series type
TDIT
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.
