Original catalogue drawing - Timken TRB Catalog, page 372
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
371.475
14.625
D
Outside diameter
514.35
20.25
B
Inner-ring / bearing width
66.675
2.625
T
Overall assembly width
74.612
2.9375
C
Cup / outer-ring width
50.8
2
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)
371.475
Bore d (in)
14.6250
Outside dia. D (mm)
514.350
Outside dia. D (in)
20.2500
Width B (mm)
66.675
Overall width T (mm)
74.612
Overall width T (in)
2.9375
Cup width C (mm)
50.800
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
236000
Basic static load rating Cor (lbs)
420000
Basic dynamic load rating Cr (N)
1050000
Basic static load rating C0r (N)
1870000
Dynamic rating C1 (N, ISO)
1050000
Dynamic rating C1 (lbf, ISO)
236000
Radial rating C90 (N)
273000
Radial rating C90 (lbf)
61300
Thrust rating Ca90 (N)
206000
Thrust rating Ca90 (lbf)
46200
Static rating C0 (N)
1870000
Static rating C0 (lbf)
420000
Factor e
0.44
Factor Y
1.36
Factor K
1.33
Geometry factor G1
2386.0
Geometry factor G2
366.8
Geometry factor Cg
0.1874
Effective load centre a (mm)
19.6
Weight
Weight (kg)
38.4
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
6.4
Housing fillet r max (mm)
3.3
Shaft shoulder da (mm)
390.0
Shaft shoulder db (mm)
400.0
Housing shoulder Da (mm)
481.1
Housing shoulder Db (mm)
478.0
Cage projection Aa (mm)
18.9
Cage projection Ab (mm)
6.0
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
262,500
102
3,386
6
175,000
392
13,083
8
131,250
1,024
34,133
10
105,000
2,154
71,814
15
70,000
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 1,050,000 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.372 (dimensions)
Series type
TS
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.
