5
Installation/assembly
Installing the gear unit
Assembly and Operating Instructions – M1..N Series Single-Stage Helical Gear Units
44
5.5.2
Mounting gear units with solid shaft
INFORMATION
Before mounting the gear unit, check the dimensions of the foundation. For detailed
information, refer to chapter
) and the dimension
sheets in your order documents.
Assemble the gear unit in the following order:
1. Secure the gear unit at the selected positions on the base support using three
foundation bolts. Position the foundation bolts at the maximum distance possible
(2 bolts on one side of the gear unit and 1 on the other side). Align the gear unit as
follows:
•
Vertically by lifting, lowering or tilting the unit using the nuts of the foundation
screws
•
Horizontally by tapping the foundation bolts slightly into the required direction
2. After having aligned the gear unit, tighten the 3 nuts of the foundation screws used
for alignment. Carefully insert the fourth foundation screw into the base support
and tighten it securely. When doing so, make sure that the position of the gear unit
does not change. If necessary, align the gear unit again.
3. Tack-weld the ends of the foundation screws to the base support (at least 3 weld-
ing spots per foundation screw). Tack-weld the foundation screws alternately in
both directions (starting from the center) and symmetrically to the gear unit's cen-
ter line. This way, misalignment caused by the welding process is avoided. After
having tack-welded all screws, they must be welded all the way round in the above
mentioned order. Adjust the nuts on the foundation bolts to ensure that the welded
foundation bolts do not twist the gear unit housing.
4. After the nuts of the retaining screws of the gear unit have been tack-welded,
check the mounting work again and then cast the enclosure.
5. When the second layer of concrete has hardened, check the assembly a last time
and adjust, if necessary.
29203856/EN – 03/2020
