Double Row TDI SeriesM257248D Bearing

Double row tapered roller bearing TDI style consists of a single-piece (double) inner ring plus two single outer rings. It is normally supplied complete with an outer-ring spacer as a pre-set assembly. To suit the application duty, the builtin setting value needs to be established by your VAFEM engineer before an order is placed. A groove and holes can be supplied in the outerring spacer to allow lubricant to pass from the bearing  housing. Contact your VAFEM engineer for spacer information.

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

Dimension and Parameters

Bearing Dimensions(mm/in.)
d :304.902
D :412.648
T :128.588
B :128.588
Load Ratings(N/lbf)
Dynamic(1)
C1(2) :1940000
Factors(2)
e :0.3
Y1 :2.1
Y2 :3.2
Dynamic(3)
C90 :289000
Ca90 :158000
C90(2) :504000
Factors(2)
K :1.83
Part Number
Inner :M257248D
Outer :M257210
Bearing Dimensions(mm/in.)
Shaft
Max. Shaft Fillet Radius
R(4) :3.3
Backing Shoulder Dia.
da :325
Housing
Max. Housing Fillet Radius
r(4) :3.3
Backing Shoulder Dia.
Db :388
Geometry Factors
G1 :2336.4
G2 :320.3
Cg :0.169
Bearing Weight(kg/lbs.) :50.79
Part Number:
d:
D:
B:
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