Original catalogue drawing - Timken TRB Catalog, page 410
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
70
2.7559
D
Outside diameter
125
4.9213
B
Inner-ring / bearing width
24
0.9449
T
Overall assembly width
26.25
1.0335
C
Cup / outer-ring width
21
0.8268
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)
70.000
Bore d (in)
2.7559
Outside dia. D (mm)
125.000
Outside dia. D (in)
4.9213
Width B (mm)
24.000
Overall width T (mm)
26.250
Overall width T (in)
1.0335
Cup width C (mm)
21.000
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
31000
Basic static load rating Cor (lbs)
35300
Basic dynamic load rating Cr (N)
138000
Basic static load rating C0r (N)
157000
Dynamic rating C1 (N, ISO)
138000
Dynamic rating C1 (lbf, ISO)
31000
Radial rating C90 (N)
35800
Radial rating C90 (lbf)
8050
Thrust rating Ca90 (N)
25700
Thrust rating Ca90 (lbf)
5790
Static rating C0 (N)
157000
Static rating C0 (lbf)
35300
Factor e
0.42
Factor Y
1.43
Factor K
1.39
Geometry factor G1
63.7
Geometry factor G2
24.8
Geometry factor Cg
0.0714
Effective load centre a (mm)
-0.5
Weight
Weight (kg)
1.23
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
2.0
Housing fillet r max (mm)
1.5
Shaft shoulder da (mm)
77.0
Shaft shoulder db (mm)
80.0
Housing shoulder Da (mm)
118.0
Housing shoulder Db (mm)
115.0
Cage projection Aa (mm)
1.8
Cage projection Ab (mm)
3.9
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
34,500
102
3,386
6
23,000
392
13,083
8
17,250
1,024
34,133
10
13,800
2,154
71,814
15
9,200
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 138,000 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.410 (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.
