Original catalogue drawing - Timken TRB Catalog, page 332
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
177.8
7
D
Outside diameter
288.925
11.375
B
Inner-ring / bearing width
63.5
2.5
T
Overall assembly width
63.5
2.5
C
Cup / outer-ring width
47.625
1.875
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)
177.800
Bore d (in)
7.0000
Outside dia. D (mm)
288.925
Outside dia. D (in)
11.3750
Width B (mm)
63.500
Overall width T (mm)
63.500
Overall width T (in)
2.5000
Cup width C (mm)
47.625
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
219000
Basic static load rating Cor (lbs)
278000
Basic dynamic load rating Cr (N)
976000
Basic static load rating C0r (N)
1240000
Dynamic rating C1 (N, ISO)
976000
Dynamic rating C1 (lbf, ISO)
219000
Radial rating C90 (N)
253000
Radial rating C90 (lbf)
56900
Thrust rating Ca90 (N)
138000
Thrust rating Ca90 (lbf)
31100
Static rating C0 (N)
1240000
Static rating C0 (lbf)
278000
Factor e
0.32
Factor Y
1.88
Factor K
1.83
Geometry factor G1
751.2
Geometry factor G2
101.5
Geometry factor Cg
0.1168
Effective load centre a (mm)
-11.7
Weight
Weight (kg)
15.15
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
7.0
Housing fillet r max (mm)
3.3
Shaft shoulder da (mm)
194.0
Shaft shoulder db (mm)
205.0
Housing shoulder Da (mm)
271.3
Housing shoulder Db (mm)
266.0
Cage projection Aa (mm)
5.8
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
244,000
102
3,386
6
162,667
392
13,083
8
122,000
1,024
34,133
10
97,600
2,154
71,814
15
65,067
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 976,000 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.332 (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.
