Original catalogue drawing - Timken TRB Catalog, page 90
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
20.637
0.8125
D
Outside diameter
49.225
1.938
B
Inner-ring / bearing width
19.845
0.7813
T
Overall assembly width
19.845
0.7813
C
Cup / outer-ring width
15.875
0.625
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)
20.637
Bore d (in)
0.8125
Outside dia. D (mm)
49.225
Outside dia. D (in)
1.9380
Width B (mm)
19.845
Overall width T (mm)
19.845
Overall width T (in)
0.7813
Cup width C (mm)
15.875
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
9810
Basic static load rating Cor (lbs)
9720
Basic dynamic load rating Cr (N)
43600
Basic static load rating C0r (N)
43200
Dynamic rating C1 (N, ISO)
43600
Dynamic rating C1 (lbf, ISO)
9810
Radial rating C90 (N)
11300
Radial rating C90 (lbf)
2540
Thrust rating Ca90 (N)
6260
Thrust rating Ca90 (lbf)
1410
Static rating C0 (N)
43200
Static rating C0 (lbf)
9720
Factor e
0.32
Factor Y
1.86
Factor K
1.81
Geometry factor G1
8.6
Geometry factor G2
6.2
Geometry factor Cg
0.0495
Effective load centre a (mm)
-7.1
Weight
Weight (kg)
0.18
Cone weight (kg)
0.12
Cup weight (kg)
0.07
Total weight (kg)
0.19
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
1.5
Housing fillet r max (mm)
1.5
Shaft shoulder da (mm)
26.0
Shaft shoulder db (mm)
28.5
Housing shoulder Da (mm)
45.5
Housing shoulder Db (mm)
42.5
Cage projection Aa (mm)
0.8
Cage projection Ab (mm)
1.2
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
10,900
102
3,386
6
7,267
392
13,083
8
5,450
1,024
34,133
10
4,360
2,154
71,814
15
2,907
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 43,600 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.90 (dimensions) / p.69 (cone) / p.69 (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.
