Original catalogue drawing - Timken TRB Catalog, page 650
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
39.687
1.5625
D
Outside diameter
88.5
3.4843
T
Overall assembly width
55.562
2.1875
C
Cup / outer-ring width
39.688
1.5625
r
Chamfer (min)
0.6
0.0236
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)
39.687
Bore d (in)
1.5625
Outside dia. D (mm)
88.500
Outside dia. D (in)
3.4843
Overall width T (mm)
55.562
Overall width T (in)
2.1875
Cup width C (mm)
39.688
Cup width C (in)
1.5625
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
32900
Basic dynamic load rating Cr (N)
147000
Dynamic rating C1 (N, ISO)
147000
Dynamic rating C1 (lbf, ISO)
32900
Radial rating C90 (N)
21800
Radial rating C90 (lbf)
4910
Thrust rating Ca90 (N)
29200
Thrust rating Ca90 (lbf)
6560
Factor e
0.78
Factor Y1
0.86
Factor Y2
1.29
Factor K
0.75
Weight
Weight (kg)
1.48
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
2.3
Housing fillet r max (mm)
0.6
Shaft shoulder db (mm)
56.0
Housing shoulder Da (mm)
84.0
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
36,750
102
3,386
6
24,500
392
13,083
8
18,375
1,024
34,133
10
14,700
2,154
71,814
15
9,800
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 147,000 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.650 (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.
