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Spring-Applied, Electrohydraulic-Released Drum Brakes

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.
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HYDRASTOP Alternating Current (AC) Thruster Brakes

HYDRASTOP 170 Inch (in) Dimension Bd Alternating Current (AC) Thruster Brake
HYDRASTOP Alternating Current (AC) Thruster Brakes

HYDRASTOP 220 Inch (in) Dimension Bd Alternating Current (AC) Thruster Brake
HYDRASTOP Alternating Current (AC) Thruster Brakes

HYDRASTOP 240 Inch (in) Dimension Bd Alternating Current (AC) Thruster Brake
HYDRASTOP Alternating Current (AC) Thruster Brakes

HYDRASTOP 640 Inch (in) Dimension Bd Alternating Current (AC) Thruster Brake
HYDRASTOP Alternating Current (AC) Thruster Brakes

HYDRASTOP 1,190 Inch (in) Dimension Bd Alternating Current (AC) Thruster Brake
Description N/A Spring-Applied, Electrohydraulic-Released Drum Brakes

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.
Brands N/A Force Control®
Torque (Association for Iron & Steel Technology (AIST)) N/A N/A 100 lb·ft N/A 200 lb·ft N/A 550 lb·ft N/A 1,000 lb·ft
Torque (Non Association for Iron & Steel Technology (AIST)) N/A 170 lb·ft N/A 220 lb·ft N/A 240 lb·ft N/A 640 lb·ft N/A 1,190 lb·ft
Thruster N/A HT2 N/A HT3 N/A HT3 N/A HT4 N/A HT6
Dimension Bd N/A 6 in N/A 8 in N/A 10 in N/A 13 in N/A 16 in
Dimension Bh N/A N/A 7.00 in N/A 8.39 in N/A 9.88 in N/A 12.13 in
Dimension A1 N/A N/A 26.64 in N/A 26.50 in N/A 34.42 in N/A 38.79 in
Dimension A1 (ALT)1 N/A N/A 23.85 in N/A 23.71 in N/A 31.63 in N/A 36.00 in
Dimension A2 N/A N/A 6.25 in N/A 7.54 in N/A 8.68 in N/A 11.47 in
Dimension C1 N/A N/A 6.30 in N/A 6.30 in N/A 6.30 in N/A 8.50 in
Dimension C1 (ALT)2 N/A N/A 9.10 in N/A 9.10 in N/A 9.10 in N/A 11.93 in
Dimension D1 N/A N/A 3.25 in N/A 4.00 in N/A 5.75 in N/A 7.50 in
Dimension D2 N/A N/A 2.88 in N/A 3.12 in N/A 4.50 in N/A 5.37 in
Dimension D4 N/A N/A 0.88 in N/A 0.88 in N/A 0.88 in N/A 1.13 in
Dimension E1 N/A N/A 0.69 in N/A 0.69 in N/A 0.82 in N/A 1.06 in
Dimension F1 N/A N/A 7.25 in N/A 7.71 in N/A 10.84 in N/A 12.84 in
Dimension H1 N/A N/A 16.69 in N/A 19.71 in N/A 24.11 in N/A 29.73 in
Phase N/A 3
Alternating Current (AC) Voltage N/A 460 V
Frequency N/A 60 Hz
Certifications N/A Certified Medical Equipment Technician (cMET)/Medical Equipment Technician (MET) Ingress Protection (IP66) Pending
Features N/A
  • 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
  • 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
Design and Function N/A 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.
Options and Accessories N/A
  • Auto-Adjuster Mechanism
  • Thruster Heater (<0º 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
  • 1 A1 ALT Are for Alternate Electrical Box and Flow Control Housing Build Configurations as Determined in Thruster Part Number
  • 2 C1 ALT Are for Alternate Electrical Box and Flow Control Housing Build Configurations as Determined in Thruster Part Number