Double Row TDO Series=M1121 Bearing

Double row tapered roller bearing TDO consists of a single-piece (double)  outer ring and two single inner rings.  This confifi guration offers a wide  effective bearing spread to support  loads created by overturning moments. These bearings can be used at  fixed  positions or allowed to float in the housing  bore to compensate for shaft expansion.


Double row tapered roller bearing TDO bearings are usually supplied complete with an inner-ring  spacer as a pre-set assembly.   To suit the application duty, the built-in setting value needs to be  established by your VAFEM engineer before an order is placed. For spacer confifi guration information, contact your Timken  engineer. Double outer ring can be used with any single inner ring from  the same series. The tables list regularly specififi ed inner-ring part numbers.

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

Dimension and Parameters

Bearing Dimensions(mm/in.)
d :9.5
D :12.875
T :4.5
C :3.25
Load Ratings(N/lbf)
Dynamic(1)
C1(2) :206000
Factors(2)
e :=F1121
Y1 :=G1121
Y2 :=H1121
Dynamic(3)
C90 :30700
Ca90 :21400
C90(2) :53500
Factors(2)
K :=L1121
Part Number
Inner :=M1121
Outer :=N1121
Bearing Dimensions(mm/in.)
Shaft
Max. Shaft Fillet Radius
R(4) :0.25
Backing Shoulder Dia.
db :10.39
Housing
Max. Housing Fillet Radius
r(4) :0.06
Backing Shoulder Dia.
Da :12.28
Pin(mm/in.)
Ka :0.75
Kb :0.31
Geometry Factors
G1 :=U1121
G2 :=V1121
Cg :=W1121
Bearing Weight(kg/lbs.) :52.86
Part Number:
d:
D:
B:
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