Looking for stable and precise hysteresis clutch and brake for your roll-to-roll applications?
author: Sunrise Group
2025-12-19
Structure and Operating Principle of Hysteresis Clutch & Brake
Figures 1–4 illustrate the typical configurations of hysteresis clutches and brakes.
1. Structure
A hysteresis clutch consists of three core components: stator, primary rotor, and secondary rotor. The stator houses an excitation coil, while the primary rotor integrates inner and outer magnetic poles. A cup-shaped unmagnetized permanent magnet (part of the secondary rotor) is inserted between these magnetic poles.
Key Specifications
-
Model: YHSA-1A
-
Operating Voltage: DC 24V
-
Rated Current: 1.0 A
-
Rated Power: 24 W
-
Torque Range: 1–6 Nm
-
Maximum Speed: 3000 r/min
-
Shaft Diameter: 14 mm
-
Weight: 3.5 kg
YHSA Hysteresis clutch: Advantages & Specs for Winding & Unwinding Equipment
Core Advantages for Winding & Unwinding Equipment
-
Slip-speed independent constant torque (1–6 Nm), ensuring stable tension control during winding diameter variation
-
Zero-contact torque transmission, avoiding material damage caused by mechanical friction
-
Smooth & silent operation, no friction noise to interfere with winding precision
-
No stick-slip effect, wear-free design, adapting to long-term continuous winding operations
-
Rapid response & high repeatability, matching dynamic winding diameter adjustment requirements
-
Torque available at standstill, facilitating stable startup of winding diameter equipment
-
Tool-free installation, no on-site adjustments, improving equipment deployment efficiency
-
2. Operating Principle
When the primary rotor rotates and the excitation coil is energized, a rotating magnetic field is generated in the air gap formed by the inner and outer magnetic poles of the primary rotor. The secondary rotor’s permanent magnet located in this gap becomes magnetized. Due to the hysteresis characteristic of the permanent magnet, its polarity change lags behind that of the primary rotor’s magnetic poles—this magnetic coupling enables torque transmission between the primary and secondary rotors.A hysteresis brake is constructed by fixing the stator and primary rotor (integrated as a stationary assembly).
Sunrise Group Culture!
With us, your money in safe, your business in safe! Our products will give you an edge over your competitors.
Industrial-Grade Pneumatic Air Shaft Core Adapter: Small-to-Large Diameter Upgrade Solution
What You Need to Know About Hysteresis Brakes
Related Article
Sunrise Group industrial strip-type pneumatic air shaft core adapter provides a high-reliability, cost-optimized solution for upgrading small-diameter pneumatic air shafts to large diameters, specifically tailored for winding diameter equipment applications.
Industrial-Grade Pneumatic Air Shaft Core Adapter: Small-to-Large Diameter Upgrade Solution
Sunrise Group Hysteresis Brakes produce torque without friction plates or magnetic particles. Torque is instead produced magnetically across an air gap...
What You Need to Know About Hysteresis Brakes
Sunrise Flange Mounted Power on Electromagnetic clutch engages instantly when energized to transmit rotary motion. Supports static & dynamic engagement, available in multiple sizes and torque levels. Optional multipole high-torque design for stronger performance in a compact size.
What's Sunrise Flange Mounted Power on Electromagnetic clutch
Sunrise Group PCO magnetic powder clutch is different from other brands—it offers faster response, less friction, and super stable torque! Perfect for tension control and high-speed Roll-to-Roll Application...
What's the different between Sunrise Group PCO magnetic powder clutch and other brand?