Original catalogue drawing - Timken TRB Catalog, page 348
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
234.95
9.25
D
Outside diameter
327.025
12.875
B
Inner-ring / bearing width
52.388
2.0625
T
Overall assembly width
52.388
2.0625
C
Cup / outer-ring width
36.512
1.4375
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)
234.950
Bore d (in)
9.2500
Outside dia. D (mm)
327.025
Outside dia. D (in)
12.8750
Width B (mm)
52.388
Overall width T (mm)
52.388
Overall width T (in)
2.0625
Cup width C (mm)
36.512
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
126000
Basic static load rating Cor (lbs)
240000
Basic dynamic load rating Cr (N)
558000
Basic static load rating C0r (N)
1070000
Dynamic rating C1 (N, ISO)
558000
Dynamic rating C1 (lbf, ISO)
126000
Radial rating C90 (N)
145000
Radial rating C90 (lbf)
32500
Thrust rating Ca90 (N)
101000
Thrust rating Ca90 (lbf)
22700
Static rating C0 (N)
1070000
Static rating C0 (lbf)
240000
Factor e
0.41
Factor Y
1.48
Factor K
1.44
Geometry factor G1
1050.5
Geometry factor G2
172.4
Geometry factor Cg
0.1401
Effective load centre a (mm)
7.6
Weight
Weight (kg)
12.32
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
6.4
Housing fillet r max (mm)
3.3
Shaft shoulder da (mm)
248.0
Shaft shoulder db (mm)
259.0
Housing shoulder Da (mm)
313.0
Housing shoulder Db (mm)
305.0
Cage projection Aa (mm)
7.0
Cage projection Ab (mm)
2.2
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
139,500
102
3,386
6
93,000
392
13,083
8
69,750
1,024
34,133
10
55,800
2,154
71,814
15
37,200
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 558,000 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.348 (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.
