Original catalogue drawing - Timken TRB Catalog, page 366
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
314.325
12.375
D
Outside diameter
495.3
19.5
B
Inner-ring / bearing width
119.062
4.6875
T
Overall assembly width
120.65
4.75
C
Cup / outer-ring width
88.9
3.5
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)
314.325
Bore d (in)
12.3750
Outside dia. D (mm)
495.300
Outside dia. D (in)
19.5000
Width B (mm)
119.062
Overall width T (mm)
120.650
Overall width T (in)
4.7500
Cup width C (mm)
88.900
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
440000
Basic static load rating Cor (lbs)
889000
Basic dynamic load rating Cr (N)
1960000
Basic static load rating C0r (N)
3950000
Dynamic rating C1 (N, ISO)
1960000
Dynamic rating C1 (lbf, ISO)
440000
Radial rating C90 (N)
508000
Radial rating C90 (lbf)
114000
Thrust rating Ca90 (N)
500000
Thrust rating Ca90 (lbf)
113000
Static rating C0 (N)
3950000
Static rating C0 (lbf)
889000
Factor e
0.58
Factor Y
1.04
Factor K
1.01
Geometry factor G1
2954.9
Geometry factor G2
250.1
Geometry factor Cg
0.2225
Effective load centre a (mm)
8.4
Weight
Weight (kg)
83.09
Cone weight (kg)
54.29
Cup weight (kg)
28.46
Total weight (kg)
82.75
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
6.4
Housing fillet r max (mm)
6.4
Shaft shoulder da (mm)
344.8
Shaft shoulder db (mm)
361.0
Housing shoulder Da (mm)
473.0
Housing shoulder Db (mm)
439.0
Cage projection Aa (mm)
17.7
Cage projection Ab (mm)
3.7
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
490,000
102
3,386
6
326,667
392
13,083
8
245,000
1,024
34,133
10
196,000
2,154
71,814
15
130,667
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 1,960,000 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.366 (dimensions) / p.218 (cone) / p.218 (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.
