MGM BMO, Использование и обслуживание

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BMO air gap range values
Brake assembly type 65 80 100 125 160
Nominal air gap value (mm) 0,2-0,3 0,2-0,3 0,2-0,3 0,3-0,4 0,3-0,4
Maximum air gap value (mm) 0,6 0,8 1,0 1,2 1,2
Table 1
Note: Table 1 refers to the brake groups usually used. For special execution motors, a different
association might be used. For further information, please contact MGM.
Air Gap Adjustment
The air gap between the BMO brake moving element (136) and brake friction surface on the
electromagnetic group (134) must mandatorily remain within the maximum values shown in table 1.
The air gap is measurable via a feeler gauge. In case these values are exceeded, it is necessary to
readjust the air gap to the nominal values. To do so, it is necessary to operate on the self-locking
ferrule (137). To facilitate locking operations, an in-built hexagon or a flattening are present on the
shaft, allowing to lock the shaft with an allen key or with a fork wrench. Once completed the
operation, please check again the air gap and if necessary, repeat the operations.
Electromagnetic group replacement
Unscrew the fixing screws (82) from the fan cover (76) hence remove it. After having removed the fan
snap ring (72), and the fan (71), unscrew the self-locking ferrule (137). To facilitate locking operations,
an in-built hexagon or a flattening are present on the shaft, allowing to lock the shaft with an allen key
or with a fork wrench.
Once having removed the self-locking ferrule, remove the BMO brake moving element (136) hence
unscrew the brake fixing screws (135). Remove the electromagnetic group (134) and replace with the
new one. Please ensure that the electromagnetic group is inserted correctly into the seat. For re-
assembly proceed backwards, completing also an air gap adjustment procedure. Make sure to handle
the electromagnetic group with clean hands, as any trace of oil diminishes the brake torque and
increases noise.