Magnetic Couplings and Clutches

When frequent disengagements wear too heavily on mechanical couplings, an application is best served by magnetic couplings, which work without the physical contact that leads to wear with mechanical couplings.

Techna's new Rimtec range includes magnetic servo clutches which smoothly and cost-effectively transmit torque with servo-quality overload protection for almost any type of industrial manufacturing, without the physical contact which leads to wear in mechanical couplings.

Magnetic couplings are designed as two parts that nestle together, producing a magnetic field across the air gap between them. The result is an extremely smooth, constant torque.

Following an overload, long-life maintenance-free magnetic couplings safely disengage without the abrasions and jerks that limit the wear life of conventional torque limiters.

Advantages
- Smooth disengagement, even during high torque
- Maintenance-free for exceptionally long-life
- No abrasion during disengagement
- Easy to assemble and adjust
- High stiffness and low inertia
- Exact transmission of the rotational movement even under extreme temperatures and environments
- Use for unique applications requiring reliability, precision, power and repeatability within the same package
- Available in shaft-to-shaft, disc or shaft-flange styles
- All magnetic clutches are available in full stainless steel


Hysteresis Magnetic Couplings
Offer extremely smooth constant torque while providing servo-quality overload protection. Following an overload, the torque transmitted remains at the set torque level, which holds the tension. Ideal for applications with constant slipping.

These maintenance-free magnetic safety clutches are designed as two parts that nestle together, but without physical contact. The clutches are available in shaft-to-shaft, disk or shaft-flange styles.

Hysteresis clutches offer extremely smooth constant torque, available over the motor’s entire speed range. The torque is produced by the magnetic field across the air gap between the two sections of the clutch. In case of overload, hysteresis magnetic clutches disengage without the abrasion and jerks that limit the wear life of conventional mechanical-type clutches.

These special clutches are ideal for applications such as bottle capping, unwind/rewind, brakes, and test equipment that require constant slipping with some torque.


Synchronous Magnetic Couplings
Provide servo-quality overload protection for applications with frequent high-torque operations, but with less requirement for positioning accuracy. These couplings disengage without transmitting any torque.

Available in shaft-to-shaft, disk or shaft-flange styles, these clutches transmit force with no physical contact. They are even capable of safely transmitting torque through a wall. High-torque transmission is accomplished by the synchronous clutches’ permanent-magnet design, which consists of two multiple-pole magnetic cylinders. Torque is produced by the magnetic field across the air gap between the two cylinders.

Transmit torque from 10 lb-in (1.2 Nm) to
1328 lb-in (150 Nm) on shafts from 0.125" (3 mm) to 1.575" (40 mm). Following an overload, the clutch disengages and slips. This reduces the risk of damage to connected equipment.

Transmit torque from 18 lb-in (2 Nm) to 265 lb-in (30 Nm) on shafts from 0.25" (6 mm) to 1.125" (28 mm).
Following an overload, these clutches disengage and slip, even when used with a barrier, thus reducing the risk of damage to connected equipment.

Transmit torque from 443 lb-in (50 Nm) to
8851 lb-in (1000 Nm) on shafts from 0.75" (20 mm) to 2.6" (65 mm). These barrier-type clutches - which can be hermetically sealed - slip when overloaded, thus reducing the risk to connected chemical pumps or other equipment.

Transmit torque from 0.9 lb-in (0.1 Nm) to 80 lb-in (9.0 Nm) on shafts from 0.125" (3 mm) to 1.575" (40 mm). Following an overload, the torque transmitted remains at the rated torque level. The overload energy is converted into heat which is safely dissipated.

Transmit torque from 0.9 lb-in (0.1 Nm) to 36 lb-in (4.0 Nm). These special clutches are ideal for applications such as bottle capping, unwind/rewind, brakes, and test equipment that require constant slipping with some torque. A special HSV Bottle Capping Clutch is also available (PDF 234KB)

Also Available...

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