Double Row TDO Series=M991 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 :7.375
D :10.625
T :4.6875
C :3.6875
Load Ratings(N/lbf)
Dynamic(1)
C1(2) :215000
Factors(2)
e :=F991
Y1 :=G991
Y2 :=H991
Dynamic(3)
C90 :32000
Ca90 :18200
C90(2) :55600
Factors(2)
K :=L991
Part Number
Inner :=M991
Outer :=N991
Bearing Dimensions(mm/in.)
Shaft
Max. Shaft Fillet Radius
R(4) :0.14
Backing Shoulder Dia.
db :8.07
Housing
Max. Housing Fillet Radius
r(4) :0.06
Backing Shoulder Dia.
Da :10.08
Pin(mm/in.)
Ka :0.75
Kb :0.31
Geometry Factors
G1 :=U991
G2 :=V991
Cg :=W991
Bearing Weight(kg/lbs.) :44.98
Part Number:
d:
D:
B:
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