HFZ Asynchronous three-phase brake motor with d.c. brake

Brake motors in a wide and comprehensive series of sizes and designs, suitable to solve every application problem of the drives with asynchronous three-phase brake motor with braking in case of supply failure
Strong and reliable product
Innovating, complete and rigorous documentation






Sizes 63 .. 200
Powers 0,045 & 37 kW
Single-speed 2, 4, 6, 8 poles 230 Y 400 V 50 Hz (sizes 63 & 160S) and 400 V 50 Hz (sizes 100 & 200)
Two-speed 2.4, 4.6, 4.8, 6.8 poles 400 V 50 Hz (sizes 63 & 200) and 2.6, 2.8, 2.12 poles 400 V 50 Hz (sizes 100 & 200)
Sizes 63 & 132 available also with higher powers than the ones foreseen by the standards
Class F insulation, temperature rise class B/F for all single-speed motors at standardized power, F for remaining motors
Mounting positions IM B3, IM B5 standard and non-standard, IM B14 and corresponding vertical mounting positions
IP 54 protection for sizes 63 & 160S and IP 55 for sizes 160 & 200
Particularly strong construction (both electrical and mechanical) to withstand alternating torsional and thermic stresses of starting and braking; duly proportioned bearings
«Supported» tightening attachments of endshields and flanges fitted on casing with «tight» coupling
Electromagnetic sizing especially studied to allow high acceleration capacity and uniform starting (slightly «sagged» characteristic curves)
Double braking surface, braking torque proportioned to motor torque () and adjustable per step
Maximum reduced noise level and operation progressivity (both at starting and braking) thanks to a lower rapidity (typical of d.c. brake) of the anchor (which is lighter and less quick in the impact): motor starts slightly braked i.e. with greater progressivity; good release and braking rapidity; possibility to increase rapidity, both in releasing (with rapid rectifier) and braking, with supply opening on d.c. side
High braking capacity but lower than the one of HFF type in case of very high frequencies of starting
Wide range of non-standard designs (flywheel, encoder, independent cooling fan, independent cooling fan and encoder, hand lever for manual release with automatic return, etc.)
Particularly suitable for applications requiring regular and low noise starting and braking with good rapidity and precision and high number of starts
Asbestos-free friction surfaces
Wide metallic terminal box, IP 55 protection
Suitable for operations with inverter
Designs available for every application need

Motor sizes 63 & 160S can be supplied in certified design to CSA and UL standards


Independent cooling fan
Independent cooling fan and encoder