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
309.88
12.2
D
Outside diameter
501.65
19.75
B
Inner-ring / bearing width
98.425
3.875
T
Overall assembly width
98.425
3.875
C
Cup / outer-ring width
79.375
3.125
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)
309.880
Bore d (in)
12.2000
Outside dia. D (mm)
501.650
Outside dia. D (in)
19.7500
Width B (mm)
98.425
Overall width T (mm)
98.425
Overall width T (in)
3.8750
Cup width C (mm)
79.375
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
585000
Basic static load rating Cor (lbs)
848000
Basic dynamic load rating Cr (N)
2600000
Basic static load rating C0r (N)
3770000
Dynamic rating C1 (N, ISO)
2600000
Dynamic rating C1 (lbf, ISO)
585000
Radial rating C90 (N)
675000
Radial rating C90 (lbf)
152000
Thrust rating Ca90 (N)
346000
Thrust rating Ca90 (lbf)
77900
Static rating C0 (N)
3770000
Static rating C0 (lbf)
848000
Factor e
0.30
Factor Y
2.00
Factor K
1.95
Geometry factor G1
3153.6
Geometry factor G2
239.4
Geometry factor Cg
0.1837
Effective load centre a (mm)
11.9
Weight
Weight (kg)
77.17
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
6.4
Housing fillet r max (mm)
3.3
Shaft shoulder da (mm)
339.0
Shaft shoulder db (mm)
348.0
Housing shoulder Da (mm)
475.0
Housing shoulder Db (mm)
468.0
Cage projection Aa (mm)
3.6
Cage projection Ab (mm)
6.7
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
650,000
102
3,386
6
433,333
392
13,083
8
325,000
1,024
34,133
10
260,000
2,154
71,814
15
173,333
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 2,600,000 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)
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.
