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
0.7874
D
Outside diameter
51.994
2.047
B
Inner-ring / bearing width
14.26
0.5614
T
Overall assembly width
15.011
0.591
C
Cup / outer-ring width
12.7
0.5
r
Chamfer (min)
1.3
0.0512
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)
20.000
Bore d (in)
0.7874
Outside dia. D (mm)
51.994
Outside dia. D (in)
2.0470
Width B (mm)
14.260
Overall width T (mm)
15.011
Overall width T (in)
0.5910
Cup width C (mm)
12.700
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
6540
Basic static load rating Cor (lbs)
6650
Basic dynamic load rating Cr (N)
29100
Basic static load rating C0r (N)
29600
Dynamic rating C1 (N, ISO)
29100
Dynamic rating C1 (lbf, ISO)
6540
Radial rating C90 (N)
7550
Radial rating C90 (lbf)
1700
Thrust rating Ca90 (N)
5190
Thrust rating Ca90 (lbf)
1170
Static rating C0 (N)
29600
Static rating C0 (lbf)
6650
Factor e
0.40
Factor Y
1.49
Factor K
1.45
Geometry factor G1
7.6
Geometry factor G2
7.1
Geometry factor Cg
0.0509
Effective load centre a (mm)
-2.8
Weight
Weight (kg)
0.16
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
1.5
Housing fillet r max (mm)
1.3
Shaft shoulder da (mm)
26.0
Shaft shoulder db (mm)
27.5
Housing shoulder Da (mm)
48.0
Housing shoulder Db (mm)
45.0
Cage projection Aa (mm)
0.2
Cage projection Ab (mm)
1.5
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
7,275
102
3,386
6
4,850
392
13,083
8
3,638
1,024
34,133
10
2,910
2,154
71,814
15
1,940
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 29,100 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)
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.
