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
121.442
4.7812
B
Inner-ring / bearing width
23.012
0.906
T
Overall assembly width
24.608
0.9688
C
Cup / outer-ring width
17.462
0.6875
r
Chamfer (min)
2
0.0787
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)
121.442
Outside dia. D (in)
4.7812
Width B (mm)
23.012
Overall width T (mm)
24.608
Overall width T (in)
0.9688
Cup width C (mm)
17.462
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
27200
Basic static load rating Cor (lbs)
30600
Basic dynamic load rating Cr (N)
121000
Basic static load rating C0r (N)
136000
Dynamic rating C1 (N, ISO)
121000
Dynamic rating C1 (lbf, ISO)
27200
Radial rating C90 (N)
31400
Radial rating C90 (lbf)
7060
Thrust rating Ca90 (N)
24200
Thrust rating Ca90 (lbf)
5450
Static rating C0 (N)
136000
Static rating C0 (lbf)
30600
Factor e
0.45
Factor Y
1.33
Factor K
1.30
Geometry factor G1
69.3
Geometry factor G2
27.0
Geometry factor Cg
0.1093
Effective load centre a (mm)
1.5
Weight
Weight (kg)
0.9
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
3.5
Housing fillet r max (mm)
2.0
Shaft shoulder da (mm)
84.0
Shaft shoulder db (mm)
91.0
Housing shoulder Da (mm)
116.0
Housing shoulder Db (mm)
110.0
Cage projection Aa (mm)
2.6
Cage projection Ab (mm)
2.1
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
30,250
102
3,386
6
20,167
392
13,083
8
15,125
1,024
34,133
10
12,100
2,154
71,814
15
8,067
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 121,000 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)
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.
