AC Thruster Brakes | Spring-Applied, Electrohydraulic-Released Drum Brakes

  • MADE IN AMERICA – Meets BABAA domestic content requirements
  • Designed to AIST Technical Report 11
  • Improved environmentally-sealed self-adjuster mechanism
  • Torque Range from 35 – 2,140 Lb-Ft
  • 6 to 19” drum sizes currently available
  • Lubrication-free bushings in all major pivot locations

Overview

The HYDRASTOP is a Fail-Safe drum brake used to statically hold and/or dynamically stop a load for various industrial applications including cranes, conveyors and moveable bridges. Key markets include Iron & Steel, Infrastructure, Mining, Material Handling and Energy.

Design & Function

A self-contained, electrohydraulic thruster device is supplied with a 3-Phase/460VAC/60Hz power supply. The internal impeller construction and motor are both bi-directional, so the power connection is not critical. When supplied with power, an internal motor spins the connected impeller to produce pressure in the piston chamber. This pressure then pushes on the face of the piston which then moves the connected piston rod out, extending the rod to its designed maximum stroke.

Thruster Off = Brake Set                       Thruster On = Brake Released

The thruster will stay in the extended state until power is removed. When power is removed, an external or internal spring returns the piston and rod to its retracted position. This design implies a fail-safe principal were, in the case of power loss, the brake sets – preventing uncontrolled movement.

Technical Specifications

Coming Soon

Features

  • HEAVY DUTY, LIGHT-WEIGHT HOUSINGS – Cast aluminum housings are IP66 rated and anodized for corrosion protection
  • SUPERIOR HEAT DISSIPATION – Finned housings allow for radiant heat transfer
  • INTERNAL BI-DIRECTIONAL BYPASS PISTON DESIGN – Bypass labyrinth seal eliminates internal wear components compared to conventional thruster designs resulting in smooth, precise piston travel and long service life
  • FLOW CONTROL VALVES – Internal check valves control the flow rate between each housing allowing for a wide range of lifting and lowering times
  • INTERNAL WET MOTOR DESIGN
  • CERTIFICATIONS – cMET/MET, IP66 pending

 

Options & Accessories

  • Auto-adjuster Mechanism
  • Thruster Heater (<0° ambient)
  • Flow Controls – Lifting/lowering valves
  • Corrosion Protection – Stainless hardware & Steel-It® epoxy paint
  • Piston Rod Dust Boot
  • Internal C-Spring
  • Limit Switches (for Brake-Released, Brake-Engaged & Manually-Released)
  • NEMA 3R & 4X Brake Enclosures
  • Manual Hand Release
  • Brake Wheels