Original catalogue drawing - Timken TRB Catalog, page 272
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
77.788
3.0625
D
Outside diameter
127
5
B
Inner-ring / bearing width
31
1.2205
T
Overall assembly width
30.162
1.1875
C
Cup / outer-ring width
22.225
0.875
r
Chamfer (min)
3.3
0.1299
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)
77.788
Bore d (in)
3.0625
Outside dia. D (mm)
127.000
Outside dia. D (in)
5.0000
Width B (mm)
31.000
Overall width T (mm)
30.162
Overall width T (in)
1.1875
Cup width C (mm)
22.225
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
36200
Basic static load rating Cor (lbs)
49800
Basic dynamic load rating Cr (N)
161000
Basic static load rating C0r (N)
222000
Dynamic rating C1 (N, ISO)
161000
Dynamic rating C1 (lbf, ISO)
36200
Radial rating C90 (N)
41800
Radial rating C90 (lbf)
9390
Thrust rating Ca90 (N)
29900
Thrust rating Ca90 (lbf)
6730
Static rating C0 (N)
222000
Static rating C0 (lbf)
49800
Factor e
0.42
Factor Y
1.43
Factor K
1.39
Geometry factor G1
96.2
Geometry factor G2
28.6
Geometry factor Cg
0.1197
Effective load centre a (mm)
-2.8
Weight
Weight (kg)
1.37
Cone weight (kg)
0.95
Cup weight (kg)
0.43
Total weight (kg)
1.38
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
3.5
Housing fillet r max (mm)
3.3
Shaft shoulder da (mm)
85.0
Shaft shoulder db (mm)
91.0
Housing shoulder Da (mm)
121.0
Housing shoulder Db (mm)
114.0
Cage projection Aa (mm)
3.3
Cage projection Ab (mm)
0.9
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
40,250
102
3,386
6
26,833
392
13,083
8
20,125
1,024
34,133
10
16,100
2,154
71,814
15
10,733
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 161,000 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.272 (dimensions) / p.91 (cone) / p.91 (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.
