Original catalogue drawing - Timken TRB Catalog, page 386
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
673.1
26.5
D
Outside diameter
793.75
31.25
B
Inner-ring / bearing width
61.912
2.4375
T
Overall assembly width
66.675
2.625
C
Cup / outer-ring width
49.212
1.9375
r
Chamfer (min)
6.4
0.252
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)
673.100
Bore d (in)
26.5000
Outside dia. D (mm)
793.750
Outside dia. D (in)
31.2500
Width B (mm)
61.912
Overall width T (mm)
66.675
Overall width T (in)
2.6250
Cup width C (mm)
49.212
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
249000
Basic static load rating Cor (lbs)
707000
Basic dynamic load rating Cr (N)
1110000
Basic static load rating C0r (N)
3140000
Dynamic rating C1 (N, ISO)
1110000
Dynamic rating C1 (lbf, ISO)
249000
Radial rating C90 (N)
287000
Radial rating C90 (lbf)
64600
Thrust rating Ca90 (N)
177000
Thrust rating Ca90 (lbf)
39800
Static rating C0 (N)
3140000
Static rating C0 (lbf)
707000
Factor e
0.36
Factor Y
1.67
Factor K
1.62
Geometry factor G1
8762.7
Geometry factor G2
1649.9
Geometry factor Cg
0.2659
Effective load centre a (mm)
53.8
Weight
Weight (kg)
51.8
Cone weight (kg)
35.99
Cup weight (kg)
16.27
Total weight (kg)
52.26
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
6.4
Housing fillet r max (mm)
6.4
Shaft shoulder da (mm)
690.0
Shaft shoulder db (mm)
702.0
Housing shoulder Da (mm)
771.0
Housing shoulder Db (mm)
765.0
Cage projection Aa (mm)
4.0
Cage projection Ab (mm)
1.6
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
277,500
102
3,386
6
185,000
392
13,083
8
138,750
1,024
34,133
10
111,000
2,154
71,814
15
74,000
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 1,110,000 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.386 (dimensions) / p.187 (cone) / p.187 (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.
