Original catalogue drawing - Timken TRB Catalog, page 652
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
50.8
2
D
Outside diameter
112.712
4.4375
T
Overall assembly width
65.088
2.5625
C
Cup / outer-ring width
46.038
1.8125
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)
50.800
Bore d (in)
2.0000
Outside dia. D (mm)
112.712
Outside dia. D (in)
4.4375
Overall width T (mm)
65.088
Overall width T (in)
2.5625
Cup width C (mm)
46.038
Cup width C (in)
1.8125
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
41600
Basic dynamic load rating Cr (N)
185000
Dynamic rating C1 (N, ISO)
185000
Dynamic rating C1 (lbf, ISO)
41600
Radial rating C90 (N)
27600
Radial rating C90 (lbf)
6200
Thrust rating Ca90 (N)
41700
Thrust rating Ca90 (lbf)
9380
Factor e
0.88
Factor Y1
0.76
Factor Y2
1.14
Factor K
0.66
Weight
Weight (kg)
2.85
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
2.3
Housing fillet r max (mm)
1.5
Shaft shoulder db (mm)
69.0
Housing shoulder Da (mm)
105.0
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
46,250
102
3,386
6
30,833
392
13,083
8
23,125
1,024
34,133
10
18,500
2,154
71,814
15
12,333
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 185,000 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.652 (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.
