The AIST-NEMA rated mill duty brakes are designed for heavy-duty steel mill and other harsh environments and applications which require high integrity products.

The advanced design features, combined with fabricated steel construction, makes this range of brakes suitable for applications requiring reliable braking with the minimum of maintenance and downtime. Applications include steel mills, stacker reclaimers, shiploaders, port cranes, shipyard cranes, offshore drilling rigs, missile assembly cranes, incinerator cranes and large gantry cranes.

5” – 30” diameter
10 – 11,000 lb. ft. torque
AC, DC, hydraulic
Explosion proof
AIST drop-in designs


Spring –applied and electromagnetic release
Replaceable magnet coils
Class F insulation
Shunt: 12V through 350V DC
Series: 5A through 1400A

MBE Options:
Auto-adjuster for lining wear
Forcing rectifier (fast response for crane hoists, etc.)
Constant potential rectifiers (for crane bridges/trolleys)
Terminal box rectifiers
Class H insulation
Nitride Corrosion Protection

Fast response - standard units 2000 cycles per hour
Spring applied and electrically released
Continuously or intermittently rated, Service < 40°C
Class F insulation
AC Supplies: 230-460-575/3Ph/50-60 Hz
DC Supplies: 250V

MBT Options:
Auto-adjuster for lining wear
Adjustable external torque spring with calibrated indicator
Externally adjustable, stepless time delays in both directions (set and release)
Braketronic Controller
Nitride Corrosion Protection
Latching hand release
Up to 3 limit switches to indicate brake position
Available in vertical design – NEW!
Thruster is mounted above the brakewheel
Fits in tight spaces

Hydraulically-applied and spring released
Pedal operation - One (1) or Two (2) Brakes

MBM Options:
Remote bleeding
Nitride Corrosion Protection

Types "MBT" and "MBE can be fitted with Pedal or Power assisted hydraulic over-ride to produce a dual-purpose brake. This hybrid brake is useful for EOT bridges, gantry cranes and similar applications where dual control and/or emergency stopping and parking are required.
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