Merobel
Electromagnetic Powder (EMP) Clutches
EMP clutches are EMP brakes with slip rings and brushes added, so both sides turn. They’re made for jobs where slip speed and slip torque must be controlled independently – something a single motor can’t do.
- 2 – 1,000 Nmrated torque
- 10sizes
- 2cooling levels: EAT and ERAT
The range
The EMP Clutch Range
Sizes and Torque
EAT clutches, and ERAT clutches with cooling fins for more heat dissipation.
| Size | Rated torque |
|---|---|
| 20 | 2 Nm |
| 50 | 5 Nm |
| 120 | 12 Nm |
| 350 | 35 Nm |
| 650 | 65 Nm |
| 1200 | 120 Nm |
| 2002 | 200 Nm |
| 3500 | 350 Nm |
| 5001 | 500 Nm |
| 10001 | 1,000 Nm |
How it works
How It Works
Torque from Magnetic Powder
Between the rotor and the housing is a gap filled with fine magnetic powder. When current flows in the coil, the powder lines up along the magnetic field and binds the two together; the more current, the more torque. With no current the powder is loose and only a small residual torque remains.
Torque depends on current, not speed, so it can be set precisely and held while the unit slips continuously – which is what keeps tension steady as a roll changes size.
Why Merobel EMP clutches
Independent Torque Control
Set Torque, Any Speed
Transmit a set torque whatever the speed difference.
Through Bore
Built on the proven EMP brake design.
Finned Option
ERAT versions with cooling fins dissipate more heat.
Smooth
No grab or chatter at low slip speeds.
How to choose
How to Size One
Torque
Rated torque must exceed the highest torque the job needs – allow for any gear or belt ratio.
Heat
Slip torque × slip speed is heat. It must stay under the rated power of the version you choose.
Residual Torque
Must be lower than the smallest torque the job needs.
Speed
Keep within the size’s minimum and maximum speed.
Literature & related
More Information
- EMP clutches catalogue
Through-bore clutches, EAT and ERAT · PDF, 1.3 MB
Not Sure Which One You Need?
Tell us about the job – the machine, the conditions and what it has to do – and we’ll help you choose the right Merobel product.