Original catalogue drawing - Timken TRB Catalog, page 114
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
31.75
1.25
D
Outside diameter
59.131
2.328
B
Inner-ring / bearing width
16.764
0.66
T
Overall assembly width
15.875
0.625
C
Cup / outer-ring width
11.811
0.465
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)
31.750
Bore d (in)
1.2500
Outside dia. D (mm)
59.131
Outside dia. D (in)
2.3280
Width B (mm)
16.764
Overall width T (mm)
15.875
Overall width T (in)
0.6250
Cup width C (mm)
11.811
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
10500
Basic static load rating Cor (lbs)
10000
Basic dynamic load rating Cr (N)
46700
Basic static load rating C0r (N)
44600
Dynamic rating C1 (N, ISO)
46700
Dynamic rating C1 (lbf, ISO)
10500
Radial rating C90 (N)
12100
Radial rating C90 (lbf)
2720
Thrust rating Ca90 (N)
8550
Thrust rating Ca90 (lbf)
1920
Static rating C0 (N)
44600
Static rating C0 (lbf)
10000
Factor e
0.41
Factor Y
1.46
Factor K
1.42
Geometry factor G1
12.8
Geometry factor G2
9.7
Geometry factor Cg
0.0612
Effective load centre a (mm)
-3.0
Weight
Weight (kg)
0.18
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
3.5
Housing fillet r max (mm)
1.3
Shaft shoulder da (mm)
36.0
Shaft shoulder db (mm)
42.5
Housing shoulder Da (mm)
56.0
Housing shoulder Db (mm)
52.0
Cage projection Aa (mm)
0.7
Cage projection Ab (mm)
0.8
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
11,675
102
3,386
6
7,783
392
13,083
8
5,838
1,024
34,133
10
4,670
2,154
71,814
15
3,113
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 46,700 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.114 (dimensions)
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.
