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
50.8
2
D
Outside diameter
77.788
3.0625
B
Inner-ring / bearing width
12.7
0.5
T
Overall assembly width
12.7
0.5
C
Cup / outer-ring width
9.525
0.375
r
Chamfer (min)
1.5
0.0591
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)
50.800
Bore d (in)
2.0000
Outside dia. D (mm)
77.788
Outside dia. D (in)
3.0625
Width B (mm)
12.700
Overall width T (mm)
12.700
Overall width T (in)
0.5000
Cup width C (mm)
9.525
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
8390
Basic static load rating Cor (lbs)
10600
Basic dynamic load rating Cr (N)
37300
Basic static load rating C0r (N)
47200
Dynamic rating C1 (N, ISO)
37300
Dynamic rating C1 (lbf, ISO)
8390
Radial rating C90 (N)
9680
Radial rating C90 (lbf)
2180
Thrust rating Ca90 (N)
5570
Thrust rating Ca90 (lbf)
1250
Static rating C0 (N)
47200
Static rating C0 (lbf)
10600
Factor e
0.34
Factor Y
1.78
Factor K
1.74
Geometry factor G1
24.2
Geometry factor G2
29.1
Geometry factor Cg
0.0699
Effective load centre a (mm)
0.0
Weight
Weight (kg)
0.2
Cone weight (kg)
0.14
Cup weight (kg)
0.06
Total weight (kg)
0.2
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
1.5
Housing fillet r max (mm)
1.5
Shaft shoulder da (mm)
55.0
Shaft shoulder db (mm)
57.0
Housing shoulder Da (mm)
74.0
Housing shoulder Db (mm)
71.0
Cage projection Aa (mm)
0.2
Cage projection Ab (mm)
1.7
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
9,325
102
3,386
6
6,217
392
13,083
8
4,662
1,024
34,133
10
3,730
2,154
71,814
15
2,487
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 37,300 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) / p.131 (cone) / p.131 (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.
