Original catalogue drawing - Timken TRB Catalog, page 194
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
82
3.2283
B
Inner-ring / bearing width
21.5
0.8465
T
Overall assembly width
21.5
0.8465
C
Cup / outer-ring width
17
0.6693
r
Chamfer (min)
0.5
0.0197
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)
82.000
Outside dia. D (in)
3.2283
Width B (mm)
21.500
Overall width T (mm)
21.500
Overall width T (in)
0.8465
Cup width C (mm)
17.000
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
18300
Basic static load rating Cor (lbs)
23400
Basic dynamic load rating Cr (N)
81300
Basic static load rating C0r (N)
104000
Dynamic rating C1 (N, ISO)
81300
Dynamic rating C1 (lbf, ISO)
18300
Radial rating C90 (N)
21100
Radial rating C90 (lbf)
4740
Thrust rating Ca90 (N)
11000
Thrust rating Ca90 (lbf)
2470
Static rating C0 (N)
104000
Static rating C0 (lbf)
23400
Factor e
0.31
Factor Y
1.97
Factor K
1.91
Geometry factor G1
38.8
Geometry factor G2
19.3
Geometry factor Cg
0.0801
Effective load centre a (mm)
-5.3
Weight
Weight (kg)
0.42
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
3.0
Housing fillet r max (mm)
0.5
Shaft shoulder da (mm)
55.0
Shaft shoulder db (mm)
61.0
Housing shoulder Da (mm)
78.0
Housing shoulder Db (mm)
76.0
Cage projection Aa (mm)
0.7
Cage projection Ab (mm)
2.2
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
20,325
102
3,386
6
13,550
392
13,083
8
10,162
1,024
34,133
10
8,130
2,154
71,814
15
5,420
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 81,300 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.194 (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.
