Original catalogue drawing - Timken TRB Catalog, page 644
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
346.075
13.625
D
Outside diameter
488.95
19.25
B
Inner-ring / bearing width
174.625
6.875
T
Overall assembly width
174.625
6.875
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)
346.075
Bore d (in)
13.6250
Outside dia. D (mm)
488.950
Outside dia. D (in)
19.2500
Width B (mm)
174.625
Width B (in)
6.8750
Overall width T (mm)
174.625
Overall width T (in)
6.8750
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
676000
Basic dynamic load rating Cr (N)
3010000
Dynamic rating C1 (N, ISO)
3010000
Dynamic rating C1 (lbf, ISO)
676000
Radial rating C90 (N)
448000
Radial rating C90 (lbf)
101000
Thrust rating Ca90 (N)
257000
Thrust rating Ca90 (lbf)
57700
Factor e
0.33
Factor Y1
2.02
Factor Y2
3.00
Factor K
1.74
Geometry factor G1
3646.2
Geometry factor G2
341.8
Geometry factor Cg
0.1999
Weight
Weight (kg)
115.19
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
3.3
Housing fillet r max (mm)
3.3
Housing shoulder Db (mm)
456.0
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
752,500
102
3,386
6
501,667
392
13,083
8
376,250
1,024
34,133
10
301,000
2,154
71,814
15
200,667
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 3,010,000 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.644 (dimensions)
Series type
TDIT
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.
