Original catalogue drawing - Timken TRB Catalog, page 100
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
25.4
1
D
Outside diameter
72.233
2.8438
B
Inner-ring / bearing width
25.4
1
T
Overall assembly width
25.4
1
C
Cup / outer-ring width
19.842
0.7812
r
Chamfer (min)
0.8
0.0315
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)
25.400
Bore d (in)
1.0000
Outside dia. D (mm)
72.233
Outside dia. D (in)
2.8438
Width B (mm)
25.400
Overall width T (mm)
25.400
Overall width T (in)
1.0000
Cup width C (mm)
19.842
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
17300
Basic static load rating Cor (lbs)
21200
Basic dynamic load rating Cr (N)
76800
Basic static load rating C0r (N)
94200
Dynamic rating C1 (N, ISO)
76800
Dynamic rating C1 (lbf, ISO)
17300
Radial rating C90 (N)
19900
Radial rating C90 (lbf)
4480
Thrust rating Ca90 (N)
18600
Thrust rating Ca90 (lbf)
4180
Static rating C0 (N)
94200
Static rating C0 (lbf)
21200
Factor e
0.55
Factor Y
1.10
Factor K
1.07
Geometry factor G1
23.4
Geometry factor G2
9.4
Geometry factor Cg
0.0822
Effective load centre a (mm)
-4.6
Weight
Weight (kg)
0.58
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
0.8
Housing fillet r max (mm)
0.8
Shaft shoulder da (mm)
39.5
Shaft shoulder db (mm)
39.5
Housing shoulder Da (mm)
69.0
Housing shoulder Db (mm)
61.0
Cage projection Aa (mm)
1.6
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
19,200
102
3,386
6
12,800
392
13,083
8
9,600
1,024
34,133
10
7,680
2,154
71,814
15
5,120
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 76,800 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.100 (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.
