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
174.625
6.875
D
Outside diameter
311.15
12.25
B
Inner-ring / bearing width
82.55
3.25
T
Overall assembly width
82.55
3.25
C
Cup / outer-ring width
65.088
2.5625
r
Chamfer (min)
6.4
0.252
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)
174.625
Bore d (in)
6.8750
Outside dia. D (mm)
311.150
Outside dia. D (in)
12.2500
Width B (mm)
82.550
Overall width T (mm)
82.550
Overall width T (in)
3.2500
Cup width C (mm)
65.088
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
252000
Basic static load rating Cor (lbs)
378000
Basic dynamic load rating Cr (N)
1120000
Basic static load rating C0r (N)
1680000
Dynamic rating C1 (N, ISO)
1120000
Dynamic rating C1 (lbf, ISO)
252000
Radial rating C90 (N)
290000
Radial rating C90 (lbf)
65200
Thrust rating Ca90 (N)
164000
Thrust rating Ca90 (lbf)
36900
Static rating C0 (N)
1680000
Static rating C0 (lbf)
378000
Factor e
0.33
Factor Y
1.81
Factor K
1.77
Geometry factor G1
913.6
Geometry factor G2
92.2
Geometry factor Cg
0.1265
Effective load centre a (mm)
-18.5
Weight
Weight (kg)
25.7
Cone weight (kg)
18.16
Cup weight (kg)
8.52
Total weight (kg)
26.68
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
6.4
Housing fillet r max (mm)
6.4
Shaft shoulder da (mm)
195.0
Shaft shoulder db (mm)
205.0
Housing shoulder Da (mm)
289.0
Housing shoulder Db (mm)
280.0
Cage projection Aa (mm)
8.2
Cage projection Ab (mm)
2.2
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
280,000
102
3,386
6
186,667
392
13,083
8
140,000
1,024
34,133
10
112,000
2,154
71,814
15
74,667
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 1,120,000 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) / p.143 (cone) / p.143 (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.
