Original catalogue drawing - Timken TRB Catalog, page 262
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
73.025
2.875
D
Outside diameter
125.412
4.9375
B
Inner-ring / bearing width
25.4
1
T
Overall assembly width
25.4
1
C
Cup / outer-ring width
19.845
0.7813
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)
73.025
Bore d (in)
2.8750
Outside dia. D (mm)
125.412
Outside dia. D (in)
4.9375
Width B (mm)
25.400
Overall width T (mm)
25.400
Overall width T (in)
1.0000
Cup width C (mm)
19.845
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
26300
Basic static load rating Cor (lbs)
39900
Basic dynamic load rating Cr (N)
117000
Basic static load rating C0r (N)
178000
Dynamic rating C1 (N, ISO)
117000
Dynamic rating C1 (lbf, ISO)
26300
Radial rating C90 (N)
30400
Radial rating C90 (lbf)
6830
Thrust rating Ca90 (N)
21600
Thrust rating Ca90 (lbf)
4860
Static rating C0 (N)
178000
Static rating C0 (lbf)
39900
Factor e
0.42
Factor Y
1.44
Factor K
1.40
Geometry factor G1
98.2
Geometry factor G2
41.8
Geometry factor Cg
0.1198
Effective load centre a (mm)
0.5
Weight
Weight (kg)
1.29
Cone weight (kg)
0.93
Cup weight (kg)
0.34
Total weight (kg)
1.27
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
3.5
Housing fillet r max (mm)
1.5
Shaft shoulder da (mm)
82.0
Shaft shoulder db (mm)
88.0
Housing shoulder Da (mm)
120.0
Housing shoulder Db (mm)
115.0
Cage projection Aa (mm)
1.5
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
29,250
102
3,386
6
19,500
392
13,083
8
14,625
1,024
34,133
10
11,700
2,154
71,814
15
7,800
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 117,000 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.262 (dimensions) / p.81 (cone) / p.81 (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.
