Original catalogue drawing - Timken TRB Catalog, page 168
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
42.987
1.6924
D
Outside diameter
79.375
3.125
B
Inner-ring / bearing width
20.638
0.8125
T
Overall assembly width
20.638
0.8125
C
Cup / outer-ring width
15.875
0.625
r
Chamfer (min)
2
0.0787
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)
42.987
Bore d (in)
1.6924
Outside dia. D (mm)
79.375
Outside dia. D (in)
3.1250
Width B (mm)
20.638
Overall width T (mm)
20.638
Overall width T (in)
0.8125
Cup width C (mm)
15.875
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
15500
Basic static load rating Cor (lbs)
18700
Basic dynamic load rating Cr (N)
68900
Basic static load rating C0r (N)
83300
Dynamic rating C1 (N, ISO)
68900
Dynamic rating C1 (lbf, ISO)
15500
Radial rating C90 (N)
17900
Radial rating C90 (lbf)
4020
Thrust rating Ca90 (N)
11200
Thrust rating Ca90 (lbf)
2510
Static rating C0 (N)
83300
Static rating C0 (lbf)
18700
Factor e
0.37
Factor Y
1.64
Factor K
1.60
Geometry factor G1
28.9
Geometry factor G2
17.9
Geometry factor Cg
0.0770
Effective load centre a (mm)
-3.8
Weight
Weight (kg)
0.42
Cone weight (kg)
0.3
Cup weight (kg)
0.13
Total weight (kg)
0.43
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
1.5
Housing fillet r max (mm)
2.0
Shaft shoulder da (mm)
49.0
Shaft shoulder db (mm)
51.0
Housing shoulder Da (mm)
75.0
Housing shoulder Db (mm)
71.0
Cage projection Aa (mm)
1.1
Cage projection Ab (mm)
1.3
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
17,225
102
3,386
6
11,483
392
13,083
8
8,612
1,024
34,133
10
6,890
2,154
71,814
15
4,593
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 68,900 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.168 (dimensions) / p.75 (cone) / p.75 (cup)
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.
