Original catalogue drawing - Timken TRB Catalog, page 430
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
300
11.811
D
Outside diameter
420
16.5354
B
Inner-ring / bearing width
76
2.9921
T
Overall assembly width
76
2.9921
C
Cup / outer-ring width
57
2.2441
r
Chamfer (min)
3
0.1181
Notes
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)
300.000
Bore d (in)
11.8110
Outside dia. D (mm)
420.000
Outside dia. D (in)
16.5354
Width B (mm)
76.000
Overall width T (mm)
76.000
Overall width T (in)
2.9921
Cup width C (mm)
57.000
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
265000
Basic static load rating Cor (lbs)
547000
Basic dynamic load rating Cr (N)
1180000
Basic static load rating C0r (N)
2430000
Dynamic rating C1 (N, ISO)
1180000
Dynamic rating C1 (lbf, ISO)
265000
Radial rating C90 (N)
306000
Radial rating C90 (lbf)
68700
Thrust rating Ca90 (N)
207000
Thrust rating Ca90 (lbf)
464000
Static rating C0 (N)
2430000
Static rating C0 (lbf)
547000
Factor e
0.39
Factor Y
1.52
Factor K
1.48
Geometry factor G1
2228.2
Geometry factor G2
250.1
Geometry factor Cg
0.1790
Effective load centre a (mm)
4.3
Weight
Weight (kg)
31.23
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
4.0
Housing fillet r max (mm)
3.0
Shaft shoulder da (mm)
318.0
Shaft shoulder db (mm)
324.0
Housing shoulder Da (mm)
405.5
Housing shoulder Db (mm)
393.0
Cage projection Aa (mm)
7.9
Cage projection Ab (mm)
6.1
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
295,000
102
3,386
6
196,667
392
13,083
8
147,500
1,024
34,133
10
118,000
2,154
71,814
15
78,667
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 1,180,000 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.430 (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.
