Original catalogue drawing - Timken TRB Catalog, page 252
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
68.262
2.6875
D
Outside diameter
120
4.7244
B
Inner-ring / bearing width
30.162
1.1875
T
Overall assembly width
29.794
1.173
C
Cup / outer-ring width
23.444
0.923
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)
68.262
Bore d (in)
2.6875
Outside dia. D (mm)
120.000
Outside dia. D (in)
4.7244
Width B (mm)
30.162
Overall width T (mm)
29.794
Overall width T (in)
1.1730
Cup width C (mm)
23.444
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
31100
Basic static load rating Cor (lbs)
44300
Basic dynamic load rating Cr (N)
138000
Basic static load rating C0r (N)
197000
Dynamic rating C1 (N, ISO)
138000
Dynamic rating C1 (lbf, ISO)
31100
Radial rating C90 (N)
35900
Radial rating C90 (lbf)
8060
Thrust rating Ca90 (N)
26800
Thrust rating Ca90 (lbf)
6020
Static rating C0 (N)
197000
Static rating C0 (lbf)
44300
Factor e
0.44
Factor Y
1.38
Factor K
1.34
Geometry factor G1
84.2
Geometry factor G2
25.9
Geometry factor Cg
0.1162
Effective load centre a (mm)
-2.8
Weight
Weight (kg)
1.38
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
3.5
Housing fillet r max (mm)
0.8
Shaft shoulder da (mm)
76.0
Shaft shoulder db (mm)
82.0
Housing shoulder Da (mm)
113.0
Housing shoulder Db (mm)
107.0
Cage projection Aa (mm)
2.2
Cage projection Ab (mm)
1.1
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.252 (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.
