Original catalogue drawing - Timken TRB Catalog, page 684
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
101.6
4
D
Outside diameter
250.825
9.875
T
Overall assembly width
161.925
6.375
C
Cup / outer-ring width
111.125
4.375
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)
101.600
Bore d (in)
4.0000
Outside dia. D (mm)
250.825
Outside dia. D (in)
9.8750
Overall width T (mm)
161.925
Overall width T (in)
6.3750
Cup width C (mm)
111.125
Cup width C (in)
4.3750
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
324000
Basic dynamic load rating Cr (N)
1440000
Dynamic rating C1 (N, ISO)
1440000
Dynamic rating C1 (lbf, ISO)
324000
Radial rating C90 (N)
215000
Radial rating C90 (lbf)
48200
Thrust rating Ca90 (N)
257000
Thrust rating Ca90 (lbf)
57800
Factor e
0.70
Factor Y1
0.97
Factor Y2
1.44
Factor K
0.84
Weight
Weight (kg)
35.84
Cone weight (kg)
11.13
Cup weight (kg)
6.35
Total weight (kg)
17.48
Mounting dimensions (fillets / shoulders)
Shaft shoulder db (mm)
149.0
Housing shoulder Da (mm)
228.8
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
360,000
102
3,386
6
240,000
392
13,083
8
180,000
1,024
34,133
10
144,000
2,154
71,814
15
96,000
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 1,440,000 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.684 (dimensions) / p.222 (cone) / p.222 (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.
