Original catalogue drawing - Timken TRB Catalog, page 366
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
317.5
12.5
D
Outside diameter
457.2
18
B
Inner-ring / bearing width
65.088
2.5625
T
Overall assembly width
66.675
2.625
C
Cup / outer-ring width
42.862
1.6875
r
Chamfer (min)
6.8
0.2677
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)
317.500
Bore d (in)
12.5000
Outside dia. D (mm)
457.200
Outside dia. D (in)
18.0000
Width B (mm)
65.088
Overall width T (mm)
66.675
Overall width T (in)
2.6250
Cup width C (mm)
42.862
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
224000
Basic static load rating Cor (lbs)
373000
Basic dynamic load rating Cr (N)
996000
Basic static load rating C0r (N)
1660000
Dynamic rating C1 (N, ISO)
996000
Dynamic rating C1 (lbf, ISO)
224000
Radial rating C90 (N)
258000
Radial rating C90 (lbf)
58000
Thrust rating Ca90 (N)
173000
Thrust rating Ca90 (lbf)
38900
Static rating C0 (N)
1660000
Static rating C0 (lbf)
373000
Factor e
0.39
Factor Y
1.53
Factor K
1.49
Geometry factor G1
1880.1
Geometry factor G2
284.2
Geometry factor Cg
0.1672
Effective load centre a (mm)
9.7
Weight
Weight (kg)
30.68
Cone weight (kg)
21.43
Cup weight (kg)
9.18
Total weight (kg)
30.61
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
6.8
Housing fillet r max (mm)
6.8
Shaft shoulder da (mm)
337.0
Shaft shoulder db (mm)
348.0
Housing shoulder Da (mm)
429.2
Housing shoulder Db (mm)
424.0
Cage projection Aa (mm)
15.1
Cage projection Ab (mm)
4.1
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
249,000
102
3,386
6
166,000
392
13,083
8
124,500
1,024
34,133
10
99,600
2,154
71,814
15
66,400
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 996,000 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.366 (dimensions) / p.131 (cone) / p.131 (cup)
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.
