Original catalogue drawing - Timken TRB Catalog, page 386
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
646.112
25.4375
D
Outside diameter
857.25
33.75
B
Inner-ring / bearing width
141.288
5.5625
T
Overall assembly width
141.288
5.5625
C
Cup / outer-ring width
109.538
4.3125
r
Chamfer (min)
6.4
0.252
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)
646.112
Bore d (in)
25.4375
Outside dia. D (mm)
857.250
Outside dia. D (in)
33.7500
Width B (mm)
141.288
Overall width T (mm)
141.288
Overall width T (in)
5.5625
Cup width C (mm)
109.538
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
1060000
Basic static load rating Cor (lbs)
2330000
Basic dynamic load rating Cr (N)
4700000
Basic static load rating C0r (N)
10400000
Dynamic rating C1 (N, ISO)
4700000
Dynamic rating C1 (lbf, ISO)
1060000
Radial rating C90 (N)
1220000
Radial rating C90 (lbf)
274000
Thrust rating Ca90 (N)
694000
Thrust rating Ca90 (lbf)
156000
Static rating C0 (N)
10400000
Static rating C0 (lbf)
2330000
Factor e
0.33
Factor Y
1.80
Factor K
1.76
Geometry factor G1
14763.0
Geometry factor G2
920.6
Geometry factor Cg
0.3153
Effective load centre a (mm)
3.0
Weight
Weight (kg)
219.31
Cup weight (kg)
63.18
Mounting dimensions (fillets / shoulders)
Shaft fillet R max (mm)
6.4
Housing fillet r max (mm)
6.4
Shaft shoulder da (mm)
678.0
Shaft shoulder db (mm)
684.0
Housing shoulder Da (mm)
824.5
Housing shoulder Db (mm)
810.0
Cage projection Aa (mm)
13.3
Cage projection Ab (mm)
7.5
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
1,175,000
102
3,386
6
783,333
392
13,083
8
587,500
1,024
34,133
10
470,000
2,154
71,814
15
313,333
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 4,700,000 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.386 (dimensions) / p.168 (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.
