2122.6-0000010 OM
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Table 4.4.10 – Basic parameters and coupling dimensions of the coupling ball
KB8329NB33
Standard size (configuration)
Coupling ball KB8329NB33
1 Mounting location
Rear lifting device
2 Design features
Towing ball Ø80, located on the lifting
device, with the possibility of height ad-
justment
3 Function
To connect and couple agricultural
trailed and semi-trailed machines with
running wheels, including the type of
tractor trailers and semi-trailers
4 DH yoke dimensions, mm:
а
) connecting ball diameter
80
87
b) ball height
c) jaw depth
65
d) position of the coupling ball
1)
for ma-
chines with rear PTO drive
Lower position
5 Towing device for coupling to DH:
а
) type
Rigid, with a coupling semi-sphere
b) vertical load in the hitch point, kN
20
c) turning angle of the machine towing de-
vice in horizontal plane, degrees, at least
±60
d) protective device type
Chain or safety rope
е
) relative calculated value of axial forces
(D), kN, not more than
70.1
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1)
Recommended.
1 – ball; 2 – rest; 3 – pin.
Figure 4.4.13 – Coupling ball KB8329NB33
To connect agricultural machines to the coupling ball, it is required to extract pin 3 (fig-
ure 4.4.13), turn rest 2 in the horizontal direction, mount the coupling semi-sphere of the agri-
cultural machine onto ball 1, set rest 2 and pin 3 in the initial position.
On agreement with MTW, the customer is allowed to purchase the coupling ball manu-
factured by another company rather than “Walterscheid” and mount it onto the tractor, if the
parameters and coupling dimensions of this coupling ball comply with the parameters and
coupling dimensions set forth in Table 4.4.10.
ATTENTION: WHEN COUPLING TRAILERS, TRAILED MACHINES, SEMI-TRAILERS
AND SEMI-TRAILED MACHINES TO THE COUPLING BALL AS A PART OF DRAWBAR
HITCH, IT IS REQUIRED TO TAKE INTO ACCOUNT THAT PERMISSIBLE LOAD IN THE
HITCH POINT IN THE LONGITUDINAL DIRECTION SHALL CONSTITUTE NOT MORE
THAN 70.1 kN AND PERMISSIBLE VERTICAL LOAD IN THE HITCH POINT SHALL CON-
STITUTE NOT MORE THAN 20 kN (INDICATED ON THE LIFTING DEVICE SIDE MEM-
BERS), REGARDLESS OF THE VALUES INDICATED ON THE COUPLING BALL PLATE!
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