4
Mechanical installation
Accessory equipment
Assembly and Operating Instructions – Explosion-Proof Gear Units
88
4.18
Accessory equipment
4.18.1
Oil drain valve
The gear unit is equipped with an oil drain plug as standard. An oil drain valve can op-
tionally be installed, that enables attaching a drain pipe for changing the gear unit oil.
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4.18.2
Oil expansion tank
The oil expansion tank allows the lubricant or air space of the gear unit to expand.
This means no lubricant can escape the breather valve at high operating temperat-
ures.
SEW‑EURODRIVE recommends to use oil expansion tanks for gear units and gear-
motors in M4 mounting position and for input speeds > 2000 min
-1
.
The following figure shows the oil expansion tank of a gearmotor.
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The oil expansion tank is delivered as assembly kit for mounting onto the gearmotor.
In case of limited space or of gear units without motor, the oil expansion tank can also
be mounted to nearby machine parts.
INFORMATION
Transverse acceleration is not permitted for gear units with expansion tank with fixed
piping for third party motors and servomotors.
For further information, contact your SEW‑EURODRIVE sales representative.
4.18.3
Agitator design
Relubrication of the agitator design
A relubrication of the output shaft bearing is offered as an option for the agitator drives
FM.., FAM.., KM.. and KAM...
24804134/EN – 05/2018