Original catalogue drawing - Timken TRB Catalog, page 396
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
52
2.0472
B
Inner-ring / bearing width
21
0.8268
T
Overall assembly width
22.25
0.876
C
Cup / outer-ring width
18
0.7087
r
Chamfer (min)
1.5
0.0591
Notes
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)
52.000
Outside dia. D (in)
2.0472
Width B (mm)
21.000
Overall width T (mm)
22.250
Overall width T (in)
0.8760
Cup width C (mm)
18.000
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
12400
Basic static load rating Cor (lbs)
12400
Basic dynamic load rating Cr (N)
55200
Basic static load rating C0r (N)
55000
Dynamic rating C1 (N, ISO)
55200
Dynamic rating C1 (lbf, ISO)
12400
Radial rating C90 (N)
14300
Radial rating C90 (lbf)
3220
Thrust rating Ca90 (N)
7350
Thrust rating Ca90 (lbf)
1650
Static rating C0 (N)
55000
Static rating C0 (lbf)
12400
Factor e
0.30
Factor Y
2.00
Factor K
1.95
Geometry factor G1
10.3
Geometry factor G2
5.9
Geometry factor Cg
0.0512
Effective load centre a (mm)
-7.9
Weight
Weight (kg)
0.24
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
1.5
Housing fillet r max (mm)
1.5
Shaft shoulder da (mm)
27.0
Shaft shoulder db (mm)
31.0
Housing shoulder Da (mm)
47.5
Housing shoulder Db (mm)
44.0
Cage projection Aa (mm)
-0.1
Cage projection Ab (mm)
1.8
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
13,800
102
3,386
6
9,200
392
13,083
8
6,900
1,024
34,133
10
5,520
2,154
71,814
15
3,680
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 55,200 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.396 (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.
