Original catalogue drawing - Timken TRB Catalog, page 84
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
11.987
0.4719
D
Outside diameter
31.991
1.2595
B
Inner-ring / bearing width
10.785
0.4246
T
Overall assembly width
10.008
0.394
C
Cup / outer-ring width
7.938
0.3125
r
Chamfer (min)
1.3
0.0512
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)
11.987
Bore d (in)
0.4719
Outside dia. D (mm)
31.991
Outside dia. D (in)
1.2595
Width B (mm)
10.785
Overall width T (mm)
10.008
Overall width T (in)
0.3940
Cup width C (mm)
7.938
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
2430
Basic static load rating Cor (lbs)
2070
Basic dynamic load rating Cr (N)
10800
Basic static load rating C0r (N)
9230
Dynamic rating C1 (N, ISO)
10800
Dynamic rating C1 (lbf, ISO)
2430
Radial rating C90 (N)
2800
Radial rating C90 (lbf)
630
Thrust rating Ca90 (N)
1940
Thrust rating Ca90 (lbf)
437
Static rating C0 (N)
9230
Static rating C0 (lbf)
2070
Factor e
0.41
Factor Y
1.48
Factor K
1.44
Geometry factor G1
1.7
Geometry factor G2
3.2
Geometry factor Cg
0.0308
Effective load centre a (mm)
-3.0
Weight
Weight (kg)
0.04
Cone weight (kg)
0.03
Cup weight (kg)
0.02
Total weight (kg)
0.05
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
0.8
Housing fillet r max (mm)
1.3
Shaft shoulder da (mm)
15.5
Shaft shoulder db (mm)
16.5
Housing shoulder Da (mm)
29.0
Housing shoulder Db (mm)
26.0
Cage projection Aa (mm)
-0.3
Cage projection Ab (mm)
1.5
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
2,700
102
3,386
6
1,800
392
13,083
8
1,350
1,024
34,133
10
1,080
2,154
71,814
15
720
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 10,800 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.84 (dimensions) / p.49 (cone) / p.49 (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.
