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The Koshin Seikosho HC4-4J (also distributed under licenses/partnerships such as MAGPOWR Perma-Tork) is a permanent magnet hysteresis torque limiter, tension control brake, and slip clutch designed for continuous industrial applications.
Key Features & Operating Principles
Permanent Magnet Hysteresis Design: Uses internal high-energy permanent magnets and a central hysteresis disk. It requires no external power source or wiring to operate.
Consistent Torque: Delivers smooth, repeatable torque that is independent of slip speed (RPM).
Zero Wear Parts: Because torque is transmitted magnetically across an air gap rather than through mechanical friction plates, there are no brake pads or friction discs to wear out or replace.
Dual Functionality (Brake/Clutch): Can be shaft-mounted and configured as a slip clutch or as a stationary tensioning brake.
Technical SpecificationsFeature / Seikosho Co., Ltd. (Japan)Model CodeHC4-4JSeriesPerma-Tork HC4 SeriesTorque Control TypeMagnetic Hysteresis / Permanent Magnet SlipBore Size / MountingStandard HC4 frame / Hollow shaft mountingTypical ApplicationsWire/film tensioning, overload protection, capping, industrial windersInstallation & Maintenance Notes
Setting Torque: Adjustable via the outer scale ring to dial in exact slip torque for line tension control.
Cogging / Memory Effect: When reducing torque settings from high to low, slowly rotate the shaft (25–250 RPM) while adjusting the dial to clear magnetic memory detents.
Thermal Dissipation: For continuous slip duty at speeds above 450 RPM, heat dissipation should be monitored (HC4 size frame typically rated up to ~22 W maximum continuous heat dissipation).
The Koshin Seikosho HC4-4J Torque Limiter Perma-Tork is a high-quality industrial product designed to provide reliable torque control. With a 30-day warranty, this torque limiter offers peace of mind for businesses in need of precise and durable equipment. The brand, Koshin Seikosho, is known for producing top-notch industrial components, making this product a valuable addition to any machinery or system requiring torque control.
Sold as shown
053225G1
