The most popular brake motor with AC brake, with fast intervention times and high braking capacities. Also available in the version with DC brake.
BA-BAX series main features are a very quick braking action, both in realeasing and braking operation, a high brake torque, a constant braking time and a very high number of start/stop cycles also under severe applications.
BM-BMX series main features are a low braking noise, a gradual acceleration during the motor start and stop and reduced overall dimensions.
BA electric brake motors are supplied as standard as BAH series starting from the frame size 225 up to 315 mm and on request starting from the frame size 80 up to 200. BAH series brake motors are proposed in the BAHX version for continuous duty with efficiency class IE2 / IE3 (compliant with EU regulation 2019/1781), alternatively they can be supplied in the BAH ‘Enhanced Power’ version only for intermittent service (S3 60%).
The BAH series brake motors have the same characteristics of the BA-BAX serie-motors. The difference essentially consists in the casing of the brake assembly designed to give greater strenght and protection against the entry of dust and liquids (IP degree). The BAH serie-motors are supplied as standard with IP55 protection degree and, on request, with IP56-65-66 protection degree.
Starting from frame size 160 casing, shields, flanges, brake friction surface and the brake protective cover are made of cast iron in order to provide a greater mechanical strenght and to be suitable for harsh environment (i.e. marine application). Upon request, starting from frame size 225, the motor body can be made of ductile cast iron. Starting from frame size 160 shafts are made of 39NiCrMo3 steel.
The standard brake release is the locking type (on request it’s possible to have the unlocking one). The locking type brake release is realized by means of 1 central screw for sizes 80÷112, 2 side screws for sizes 132÷315.
The BAH series motors are also available in the BAHS execution without cooloing fan.
BMBM series includes three-phase asynchronous brake motors with twin DC brakes working independently of each other, starting from 63 up to 315 frame sizes and power range from 0.08 kW up to 132 kW. BMBM series motors are designed for intermittent duty S3 25% (see technical data). BMBMX series electric brake motors for intermittent duty S3 40% are also available.
BMBM series main feature is a very high reliability in those lifting applications where there are high demands of safety and silence. For these reasons BMBM series motors are particularly suitable to be used in TV-cine studios and theatre stages. The motor brakes in case of power supply failure. The braking action is always secured through a very quick and precise stop assuring a safe and a prompt stop in case of unintentional power supply failure. The brake torque remains the same in both directions of rotation and the braking action occurs without shaft axial sliding. The brake components and assembly are designed with special features to be noiseless during stops.
The manual brake release is made up of two levers (one for each brake) so to avoid unwanted starts.
It’s possible to release the brakes just using one hand. The two brakes are supplied through independent rectifiers which are positioned in the terminal box.
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