Double Row TDIT Series688TD Bearing

Double row tapered roller bearing TDIT is a double inner-ring bearing with a tapered bore.  It is comprised of a one-piece (double) inner ring and two  single outer rings. TDIT bearings are typically supplied complete with an  outer-ring spacer as a pre-set assembly. Contact your VAFEM engineer for spacer confifi guration information. These can be used in  fixed (locating) positions on rotating shaft applications. The tapered inner-ring bore allows for easy removal where  interference  fits are necessary and frequent removal of the  bearing from the shaft is desired.

VAFEM (Shang Hai) Bearing Technology Co.,Ltd
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Double Row TDIT Series

Dimension and Parameters

Bearing Dimensions(mm/in.)
d :3.9453
Taper :1:19.2
D :6.625
T :3.75
B :3.75
Load Ratings(N/lbf)
Dynamic(1)
C1(2) :97800
Factors(2)
e :0.47
Y1 :1.43
Y2 :2.14
Dynamic(3)
C90 :14600
Ca90 :11700
C90(2) :25400
Factors(2)
K :1.24
Part Number
Inner :688TD
Outer :672
Bearing Dimensions(mm/in.)
Shaft
Max. Shaft Fillet Radius
R(4) :0.03
Housing
Max. Housing Fillet Radius
r(4) :0.13
Backing Shoulder Dia.
Db :5.87
Geometry Factors
G1 :182.5
G2 :37.3
Cg :0.1056
Bearing Weight(kg/lbs.) :18.46
Part Number:
d:
D:
B:
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