Original catalogue drawing - Timken TRB Catalog, page 322
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
139.7
5.5
D
Outside diameter
307.975
12.125
B
Inner-ring / bearing width
93.662
3.6875
T
Overall assembly width
88.9
3.5
C
Cup / outer-ring width
66.675
2.625
r
Chamfer (min)
6.8
0.2677
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)
139.700
Bore d (in)
5.5000
Outside dia. D (mm)
307.975
Outside dia. D (in)
12.1250
Width B (mm)
93.662
Overall width T (mm)
88.900
Overall width T (in)
3.5000
Cup width C (mm)
66.675
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
259000
Basic static load rating Cor (lbs)
354000
Basic dynamic load rating Cr (N)
1150000
Basic static load rating C0r (N)
1580000
Dynamic rating C1 (N, ISO)
1150000
Dynamic rating C1 (lbf, ISO)
259000
Radial rating C90 (N)
299000
Radial rating C90 (lbf)
67200
Thrust rating Ca90 (N)
167000
Thrust rating Ca90 (lbf)
37500
Static rating C0 (N)
1580000
Static rating C0 (lbf)
354000
Factor e
0.33
Factor Y
1.84
Factor K
1.79
Geometry factor G1
718.4
Geometry factor G2
62.1
Geometry factor Cg
0.1157
Effective load centre a (mm)
-26.4
Weight
Weight (kg)
31.27
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
9.7
Housing fillet r max (mm)
6.8
Shaft shoulder da (mm)
167.9
Shaft shoulder db (mm)
180.0
Housing shoulder Da (mm)
285.5
Housing shoulder Db (mm)
276.1
Cage projection Aa (mm)
10.5
Cage projection Ab (mm)
1.1
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
287,500
102
3,386
6
191,667
392
13,083
8
143,750
1,024
34,133
10
115,000
2,154
71,814
15
76,667
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 1,150,000 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.322 (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.
