Original catalogue drawing - Timken TRB Catalog, page 314
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
120.65
4.75
D
Outside diameter
259.975
10.2352
B
Inner-ring / bearing width
82.55
3.25
T
Overall assembly width
77.788
3.0625
C
Cup / outer-ring width
61.912
2.4375
r
Chamfer (min)
4
0.1575
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)
120.650
Bore d (in)
4.7500
Outside dia. D (mm)
259.975
Outside dia. D (in)
10.2352
Width B (mm)
82.550
Overall width T (mm)
77.788
Overall width T (in)
3.0625
Cup width C (mm)
61.912
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
205000
Basic static load rating Cor (lbs)
279000
Basic dynamic load rating Cr (N)
910000
Basic static load rating C0r (N)
1240000
Dynamic rating C1 (N, ISO)
910000
Dynamic rating C1 (lbf, ISO)
205000
Radial rating C90 (N)
236000
Radial rating C90 (lbf)
53000
Thrust rating Ca90 (N)
130000
Thrust rating Ca90 (lbf)
29200
Static rating C0 (N)
1240000
Static rating C0 (lbf)
279000
Factor e
0.32
Factor Y
1.87
Factor K
1.82
Geometry factor G1
529.8
Geometry factor G2
44.8
Geometry factor Cg
0.1329
Effective load centre a (mm)
-23.4
Weight
Weight (kg)
19.85
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
9.7
Housing fillet r max (mm)
4.0
Shaft shoulder da (mm)
142.0
Shaft shoulder db (mm)
158.0
Housing shoulder Da (mm)
233.6
Housing shoulder Db (mm)
228.0
Cage projection Aa (mm)
7.0
Cage projection Ab (mm)
0.0
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
227,500
102
3,386
6
151,667
392
13,083
8
113,750
1,024
34,133
10
91,000
2,154
71,814
15
60,667
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 910,000 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.314 (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.
