Technical data sheet Magnetic particle brake Kern Antriebstechnik GmbH Tel.: +49 (0)7541-5016-0 Mail: [email protected]Seite 1 von 7 Gutenbergstraße 11 Fax: +49 (0)7541-5016-28 Web: www.kern-motion.com D-88046 Friedrichshafen db_MPB_en 11/2019 Magnetic patricle brake MPB Effect of the magnetic particle brakes To create a moment, a DC voltage must be applied to the component. The resulting moment is proportional to voltage. There is an air gap between the rotor and the housing. In this air gap, a special abrasion-resistant iron powder is filled. In the housing a coil is installed. This coil generates a magnetic field as a function of the applied voltage. In this magnetic field, the iron powder is aligned and forms chains. These chains transmit the moment between housing and rotor. The higher the current (voltage) the longer and more stable the powder chains become and the more moment can be transferred. When the transmittable torque is exceeded, slip occurs between the housing and the rotor. The brakes are designed for continuous slip. However, the permissible slip power must not be exceeded. Before using the brake, the required slip power must be calculated and compared with the data sheet. Too high average slip power overheats the brake and can damage the brake Field of application Brake and over load protection applications Applications where an adjustable torque is required Advantages and properties Torque is easy to adjust and control High running smoothness at low speed Easy and repretable to control Fast and easy to mount Almost wear and maintenance free Compact dimensions
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Magnetic patricle brake MPB - Kern Antriebstechnik · D-88046 Friedrichshafen db_MPB_en 11/2019 Magnetic patricle brake MPB Effect of the magnetic particle brakes To create a moment,
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Effect of the magnetic particle brakes To create a moment, a DC voltage must be applied to the component. The resulting moment is proportional to voltage. There is an air gap between the rotor and the housing. In this air gap, a special abrasion-resistant iron powder is filled. In the housing a coil is installed. This coil generates a magnetic field as a function of the applied voltage. In this magnetic field, the iron powder is aligned and forms chains. These chains transmit the moment between housing and rotor. The higher the current (voltage) the longer and more stable the powder chains become and the more moment can be transferred. When the transmittable torque is exceeded, slip occurs between the housing and the rotor. The brakes are designed for continuous slip. However, the permissible slip power must not be exceeded. Before using the brake, the required slip power must be calculated and compared with the data sheet. Too high average slip power overheats the brake and can damage the brake
Field of application
Brake and over load protection applications
Applications where an adjustable torque is required
All values at 20°C *Value for torque are minimum value, tolerance of all other values are +/-10% **Power loss must not be exceeded
Curve torque permitted power
Please note: Speeds and torques above the line for the selected brake can only be used for a short time. Continuous operation above the line causes an overheating and a failure of the component.
0
1
2
3
4
5
6
7
8
9
10
11
0 100 200 300 400 500 600 700 800
Dre
hm
om
ent
, To
rqu
e [N
m]
Drehzahl, Speed [U/min]
torque / permitted power MPB 10
MPB / K 10 MPB / K 10 mit Kühlkörper, with heat sink
All values at 20°C *Value for torque are minimum value, tolerance of all other values are +/-10% **Power loss must not be exceeded
Curve torque permitted power
Please note: Speeds and torques above the line for the selected brake can only be used for a short time. Continuous operation above the line causes an overheating and a failure of the component.
0
2
4
6
8
10
12
14
16
18
20
22
24
26
0 100 200 300 400 500 600
Dre
hm
om
ent
, To
rqu
e [N
m]
Drehzahl, Speed [U/min]
torque / permitted power MPB 25
MPB / K 25 MPB / K 25 mit Kühlkörper, with heat sink
All values at 20°C *Value for torque are minimum value, tolerance of all other values are +/-10% **Power loss must not be exceeded
Curve torque permitted power
Please note: Speeds and torques above the line for the selected brake can only be used for a short time. Continuous operation above the line causes an overheating and a failure of the component.
0
5
10
15
20
25
30
35
40
45
50
0 50 100 150 200 250 300 350 400
Dre
hm
om
ent
, To
rqu
e [N
m]
Drehzahl, Speed [U/min]
torque / permitted power MPB 50
MPB / K 50 MPB / K 50 mit Kühlkörper, with heat sink