Original catalogue drawing - Timken TRB Catalog, page 334
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
180
7.0866
D
Outside diameter
250
9.8425
B
Inner-ring / bearing width
45
1.7717
T
Overall assembly width
47
1.8504
C
Cup / outer-ring width
37
1.4567
r
Chamfer (min)
2.5
0.0984
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)
180.000
Bore d (in)
7.0866
Outside dia. D (mm)
250.000
Outside dia. D (in)
9.8425
Width B (mm)
45.000
Overall width T (mm)
47.000
Overall width T (in)
1.8504
Cup width C (mm)
37.000
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
92000
Basic static load rating Cor (lbs)
177000
Basic dynamic load rating Cr (N)
409000
Basic static load rating C0r (N)
786000
Dynamic rating C1 (N, ISO)
409000
Dynamic rating C1 (lbf, ISO)
92000
Radial rating C90 (N)
106000
Radial rating C90 (lbf)
23800
Thrust rating Ca90 (N)
87200
Thrust rating Ca90 (lbf)
19600
Static rating C0 (N)
786000
Static rating C0 (lbf)
177000
Factor e
0.48
Factor Y
1.25
Factor K
1.22
Geometry factor G1
589.4
Geometry factor G2
128.0
Geometry factor Cg
0.1227
Effective load centre a (mm)
8.9
Weight
Weight (kg)
6.61
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
9.5
Housing fillet r max (mm)
2.5
Shaft shoulder da (mm)
190.0
Shaft shoulder db (mm)
209.0
Housing shoulder Da (mm)
242.6
Housing shoulder Db (mm)
232.0
Cage projection Aa (mm)
3.3
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
102,250
102
3,386
6
68,167
392
13,083
8
51,125
1,024
34,133
10
40,900
2,154
71,814
15
27,267
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 409,000 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.334 (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.
