Original catalogue drawing - Timken TRB Catalog, page 148
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
38.1
1.5
D
Outside diameter
81.755
3.2187
B
Inner-ring / bearing width
30.391
1.1965
T
Overall assembly width
29.37
1.1563
C
Cup / outer-ring width
23.812
0.9375
r
Chamfer (min)
3.3
0.1299
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)
38.100
Bore d (in)
1.5000
Outside dia. D (mm)
81.755
Outside dia. D (in)
3.2187
Width B (mm)
30.391
Overall width T (mm)
29.370
Overall width T (in)
1.1563
Cup width C (mm)
23.812
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
25800
Basic static load rating Cor (lbs)
29100
Basic dynamic load rating Cr (N)
115000
Basic static load rating C0r (N)
129000
Dynamic rating C1 (N, ISO)
115000
Dynamic rating C1 (lbf, ISO)
25800
Radial rating C90 (N)
29800
Radial rating C90 (lbf)
6700
Thrust rating Ca90 (N)
13900
Thrust rating Ca90 (lbf)
3130
Static rating C0 (N)
129000
Static rating C0 (lbf)
29100
Factor e
0.27
Factor Y
2.20
Factor K
2.14
Geometry factor G1
34.6
Geometry factor G2
12.1
Geometry factor Cg
0.0744
Effective load centre a (mm)
-10.9
Weight
Weight (kg)
0.71
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
3.5
Housing fillet r max (mm)
3.3
Shaft shoulder da (mm)
44.5
Shaft shoulder db (mm)
51.0
Housing shoulder Da (mm)
75.0
Housing shoulder Db (mm)
71.0
Cage projection Aa (mm)
1.8
Cage projection Ab (mm)
1.1
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
28,750
102
3,386
6
19,167
392
13,083
8
14,375
1,024
34,133
10
11,500
2,154
71,814
15
7,667
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 115,000 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.148 (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.
