Technical Description; General Description; Delivery Condition Of The Gear Unit - Siemens KMS Assembly And Operating Instructions Manual

5.

Technical description

Observe the instructions in section 3. "Safety instructions"!
5.1

General description

The gear unit described is a "FLENDER Bevel- helical gear unit" of the type "KMS" designed for driving
a vertical mill.
The axial and radial forces resulting from the grinding process are led into the foundation through the gear
unit housing.
A detailed illustration of the gear unit is contained the drawings in the gear unit documentation.
NOTICE
Property damage
Destruction of the gear unit or gear unit parts from wrong rotation direction is possible.
The gear unit is approved for one direction of rotation only.
Observe the direction-of-rotation arrows on the housing.
5.2

Delivery condition of the gear unit

The input shaft of the gear unit is equipped with a radial shaft sealing ring (1), which is installed hidden and
ensures the necessary airtight sealing of the gear unit interior for the specified preservation period
(see Figure 5). Removing the radial shaft sealing ring during the start-up is not required. Should the radial
shaft sealing ring no longer fulfil its sealing function after start-up, this does not impede the reliability of the
shaft sealing.
A round cord hollow profile (2) is used as sealing between the gear unit housing and the output flange. This
seal additionally serves for the airtight sealing of the gear unit interior for the specified preservation period.
If the gear unit is opened (e.g. by removing the adhesive tape on the labyrinth seal of the input shaft and/or
the output flange, by removing the round cord hollow profile (2) or by opening a lid or screw plug), the
start-up must take place within one week or the gear unit must be re-preserved according to item 4.4.3.
1
1 Radial shaft sealing ring
Fig. 5: Arrangement of the round cord hollow profile and radial shaft sealing ring (schematic
illustration)
NOTICE
Property damage
Corrosion is possible when the gear unit is opened too early.
Any opening of the gear unit (e.g. by removing the adhesive tape on the input shaft or on the output
flange, removing the round cord hollow profile, or by opening a lid or a screw plug) reduces the
guaranteed preservation period. If the gear unit is opened, it must be taken into operation within one
week. If the start-up is delayed, special measures are necessary to maintain preservation (see
item 4.4.3).
2
BA 9137 en 12/2015
32 / 89
Round cord hollow profile
2