Original catalogue drawing - Timken TRB Catalog, page 118
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
31.75
1.25
D
Outside diameter
73.025
2.875
B
Inner-ring / bearing width
22.225
0.875
T
Overall assembly width
22.225
0.875
C
Cup / outer-ring width
17.462
0.6875
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)
31.750
Bore d (in)
1.2500
Outside dia. D (mm)
73.025
Outside dia. D (in)
2.8750
Width B (mm)
22.225
Overall width T (mm)
22.225
Overall width T (in)
0.8750
Cup width C (mm)
17.462
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
14800
Basic static load rating Cor (lbs)
16800
Basic dynamic load rating Cr (N)
65700
Basic static load rating C0r (N)
74900
Dynamic rating C1 (N, ISO)
65700
Dynamic rating C1 (lbf, ISO)
14800
Radial rating C90 (N)
17000
Radial rating C90 (lbf)
3830
Thrust rating Ca90 (N)
13200
Thrust rating Ca90 (lbf)
2980
Static rating C0 (N)
74900
Static rating C0 (lbf)
16800
Factor e
0.45
Factor Y
1.32
Factor K
1.29
Geometry factor G1
20.6
Geometry factor G2
10.1
Geometry factor Cg
0.0740
Effective load centre a (mm)
-3.8
Weight
Weight (kg)
0.44
Cone weight (kg)
0.29
Cup weight (kg)
0.15
Total weight (kg)
0.44
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
3.5
Housing fillet r max (mm)
3.3
Shaft shoulder da (mm)
39.5
Shaft shoulder db (mm)
45.5
Housing shoulder Da (mm)
68.0
Housing shoulder Db (mm)
62.0
Cage projection Aa (mm)
1.4
Cage projection Ab (mm)
1.0
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
16,425
102
3,386
6
10,950
392
13,083
8
8,212
1,024
34,133
10
6,570
2,154
71,814
15
4,380
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 65,700 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.118 (dimensions) / p.64 (cone) / p.64 (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.
