Original catalogue drawing - Timken TRB Catalog, page 196
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
50
1.9685
D
Outside diameter
90
3.5433
B
Inner-ring / bearing width
28
1.1024
T
Overall assembly width
28
1.1024
C
Cup / outer-ring width
23
0.9055
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)
50.000
Bore d (in)
1.9685
Outside dia. D (mm)
90.000
Outside dia. D (in)
3.5433
Width B (mm)
28.000
Overall width T (mm)
28.000
Overall width T (in)
1.1024
Cup width C (mm)
23.000
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
27800
Basic static load rating Cor (lbs)
34600
Basic dynamic load rating Cr (N)
124000
Basic static load rating C0r (N)
154000
Dynamic rating C1 (N, ISO)
124000
Dynamic rating C1 (lbf, ISO)
27800
Radial rating C90 (N)
32100
Radial rating C90 (lbf)
7210
Thrust rating Ca90 (N)
18100
Thrust rating Ca90 (lbf)
4060
Static rating C0 (N)
154000
Static rating C0 (lbf)
34600
Factor e
0.33
Factor Y
1.82
Factor K
1.78
Geometry factor G1
48.2
Geometry factor G2
15.2
Geometry factor Cg
0.0885
Effective load centre a (mm)
-7.6
Weight
Weight (kg)
0.74
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
3.0
Housing fillet r max (mm)
2.5
Shaft shoulder da (mm)
57.0
Shaft shoulder db (mm)
63.0
Housing shoulder Da (mm)
85.0
Housing shoulder Db (mm)
80.0
Cage projection Aa (mm)
0.8
Cage projection Ab (mm)
2.3
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
31,000
102
3,386
6
20,667
392
13,083
8
15,500
1,024
34,133
10
12,400
2,154
71,814
15
8,267
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 124,000 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.196 (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.
