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
447.675
17.625
B
Inner-ring / bearing width
85.725
3.375
T
Overall assembly width
85.725
3.375
C
Cup / outer-ring width
68.262
2.6875
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)
317.500
Bore d (in)
12.5000
Outside dia. D (mm)
447.675
Outside dia. D (in)
17.6250
Width B (mm)
85.725
Overall width T (mm)
85.725
Overall width T (in)
3.3750
Cup width C (mm)
68.262
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
377000
Basic static load rating Cor (lbs)
706000
Basic dynamic load rating Cr (N)
1680000
Basic static load rating C0r (N)
3140000
Dynamic rating C1 (N, ISO)
1680000
Dynamic rating C1 (lbf, ISO)
377000
Radial rating C90 (N)
435000
Radial rating C90 (lbf)
97800
Thrust rating Ca90 (N)
249000
Thrust rating Ca90 (lbf)
56000
Static rating C0 (N)
3140000
Static rating C0 (lbf)
706000
Factor e
0.33
Factor Y
1.79
Factor K
1.74
Geometry factor G1
2944.6
Geometry factor G2
303.9
Geometry factor Cg
0.1863
Effective load centre a (mm)
-4.8
Weight
Weight (kg)
41.94
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
3.5
Housing fillet r max (mm)
3.3
Shaft shoulder da (mm)
337.0
Shaft shoulder db (mm)
341.0
Housing shoulder Da (mm)
427.7
Housing shoulder Db (mm)
418.0
Cage projection Aa (mm)
6.8
Cage projection Ab (mm)
3.8
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
420,000
102
3,386
6
280,000
392
13,083
8
210,000
1,024
34,133
10
168,000
2,154
71,814
15
112,000
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 1,680,000 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)
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.
