Original catalogue drawing - Timken TRB Catalog, page 654
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
101.6
4
D
Outside diameter
180.975
7.125
T
Overall assembly width
104.775
4.125
C
Cup / outer-ring width
85.725
3.375
r
Chamfer (min)
1.5
0.0591
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)
101.600
Bore d (in)
4.0000
Outside dia. D (mm)
180.975
Outside dia. D (in)
7.1250
Overall width T (mm)
104.775
Overall width T (in)
4.1250
Cup width C (mm)
85.725
Cup width C (in)
3.3750
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
135000
Basic dynamic load rating Cr (N)
603000
Dynamic rating C1 (N, ISO)
603000
Dynamic rating C1 (lbf, ISO)
135000
Radial rating C90 (N)
89700
Radial rating C90 (lbf)
20200
Thrust rating Ca90 (N)
59200
Thrust rating Ca90 (lbf)
13300
Factor e
0.39
Factor Y1
1.75
Factor Y2
2.61
Factor K
1.51
Weight
Weight (kg)
10.62
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
3.5
Housing fillet r max (mm)
1.5
Shaft shoulder db (mm)
119.0
Housing shoulder Da (mm)
168.0
Pin dimension Ka (mm)
19.05
Pin dimension Kb (mm)
7.13
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
150,750
102
3,386
6
100,500
392
13,083
8
75,375
1,024
34,133
10
60,300
2,154
71,814
15
40,200
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 603,000 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.654 (dimensions)
Series type
TNA
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.
