Electromagnetic clutches and brakes

Electromagnetic clutches and brakes

SUCO electromagnetic clutches and brakes are used in construction machines, agricultural machinery, machine tools, pumps and compressors, centrifuges, belt conveyors and cleaning machines.

How do electromagnetic clutches work?

The working principles of electromagnetic clutches and brakes are very similar. The stator body contains the field coil, which is a copper coil cast in synthetic resin. The clutch is activated by applying a direct current to the field coil. This creates a magnetic field, which electromagnetically attracts the armature plate towards the input drive hub with its friction lining, and so allows torque to be transmitted from the input side to the output. The axially-located output drive hub separates from the input side when the current is cut off . A return spring ensures that the armature plate separates from the input hub.

How do electromagnetic brakes work?

The stator body contains the field coil, which is a copper coil cast in synthetic resin. When current is applied a magnetic fi eld is created, which attracts the armature plate to wards the friction lining, and so transmits a braking torque to the output hub. When the current is off, the return spring pulls the armature plate back to its original position.

Typical applications

Among many other applications, SUCO electromagnetic clutches and brakes are used in construction machines, agricultural machinery, machine tools, pumps and compressors, centrifuges, belt conveyors and cleaning machines.
Category:

When assembling, the stator body must be accurately centered on the input drive hub; otherwise, the hub may rub on the stator body and cause damage to the clutch.

Depending on the size of the clutch, the installation must provide for an air gap of between 0.2 and 0.5 mm between the drive hub and the armature disc.

If a SUCO output drive hub is not used, it is important to ensure that there are clearance holes to accommodate the rivet heads when installing the armature disc. The armature disc is centered by the screws which hold the return spring to the output component. When the armature disc is installed, it must remain free to move axially against the return spring.

suco-clutch-g-type

Construction and mode of operation

The basic model of the electromagnetic clutch without bearings consists of

  1. stator body with cast-in coil and
  2. connection cable,
  3. the input drive hub and the
  4. armature disc to which the
  5. return spring is riveted.
construction-e-type
1
stator body
2
connection cable
3
input drive hub
4
armature disc
5
return spring

Model A

Clutch with input drive hub

Basic version without output drive hub.

Connection to output side by screws.

Model A cross section and sketch

Model C

Clutch with input & output drive hub

Basic version with axial output drive (shaft – shaft).

Model C cross section and sketch

Performance data and dimensions

Size E02 E03 E04 E05 E06 E07 E08 E09
Torque [Nm] For reference purposes 1) 1.0 4.5 8.0 20.0 38.0 80.0 150.0 280.0
Speed of rotation max. [rpm] 10.000 8.000 6.000 5.000 4.000 3.000 3.000 2.000
Power [W] T = 20° C 9 12 20 23 32 40 55 72
d max. [mm] 2) 10 20 25 30 40 50 70 80
D [mm] 60 80 100 125 150 190 230 290
L1 [mm] 26.5 28.0 31.0 36.0 40.5 46.5 55.4 64.0
L2 [mm] 38.5 43.0 51.0 61.0 70.5 84.5 103.0 119.0
B [mm] 52 72 90 112 137 175 215 270
F [mm] 42 63 80 100 125 160 200 250
H [mm] 29 46 60 76 95 120 158 210

1) Depending on design of installation, operating and ambient conditions
2) Keyway to DIN 6885/1

Depending on the size of the clutch, the installation must provide for an air gap of between 0.2 and 0.5 mm between the drive hub and the armature disc.

If a SUCO output drive hub is not used, it is important to ensure that there are clearance holes to accommodate the rivet heads when installing the armature disc. The armature disc is centered by the screws which hold the spring disc to the output component.

When the armature disc is installed, it must remain free to move axially against the return spring.

suco-clutch-g-type

Construction and mode of operation

The basic model of electromagnetic clutch with bearing consists of

  1. stator body with cast-in coil and
  2. connection cable, the
  3. input drive hub with support bearing, and the
  4. armature disc to which the
  5. return spring is riveted.

Because it contains a bearing, it is not necessary to center the stator body on the input drive hub when using this model.

construction-g-type
1
stator body
2
connection cable
3
input drive hub
4
armature disc
5
return spring

Model A

Model A cross section and sketch

Clutch with input drive hub

Basic version without output drive hub.

Connection to output side by screws.

Model C

Model C cross section and sketch

Clutch with input and output drive hub

Basic version with axial output drive (mounted on one shaft).

Output drive hub with bearings.

Model D

Model D cross section and sketch

Clutch with input & output drive hub

Basic version with axial output drive (shaft – shaft).

Performance data and dimensions

Size G03 G04 G05 G06 G07 G08 G09
Torque [Nm] For reference purposes 1) 4.5 8.0 20.0 38.0 80.0 150.0 280.0
Speed of rotation max. [rpm] 8.000 6.000 5.000 4.000 3.000 3.000 2.000
Power [W] T = 20° C 12 20 23 32 40 55 72
d max. [mm] 2) 20 25 30 40 50 70 80
D [mm] 80 100 125 150 190 230 290
L1 [mm] 41.0 45.0 52.0 56.5 67.0 75.4 90.0
L2 [mm] 68.0 72.5 92.0 102.5 112.0 130.5 153.0
L3 [mm] 56.0 65.0 77.0 86.5 105.0 123.4 145.0
B [mm] 72 90 112 137 175 215 270
F [mm] 63 80 100 125 160 200 250
H [mm] 46 60 76 95 120 158 210

1) Depending on design of installation, operating and ambient conditions
2) Keyway to DIN 6885/1

The stator body must be installed so that it is concentric with the output side.

Depending on the size of the brake, the installation must provide for an air gap of between 0.2 and 0.5 mm between the friction lining and the armature disc.

If a SUCO output drive hub is not used, it is important to ensure that there are clearance holes to accommodate the rivet heads, when installing the armature disc. The armature disc is centered by the screws which hold the spring disc to the output component. When the armature disc is installed, it must remain free to move axially against the return spring.

Electromagnetic brakes b-type

Construction and mode of operation

The basic model of electromagnetic brake consists of

  1. stator body with cast-in coil and
  2. connection cable, and the
  3. armature disc to which the
  4. return spring is riveted.
  5. The friction lining is bonded directly to the stator body.
construction-b-type
1
stator body
2
connection cable
3
friction lining
4
armature disc
5
return spring

Model A

Model A cross section and sketch

Brake without hub

Basic version without drive hub.

Connection to output side by screws.

Model B

Model B cross section and sketch

Brake with internal hub

Basic version with axial output drive.

Internal hub.

Model C

Model C cross section and sketch

Brake with external hub

Basic version with axial output drive.

External hub.

Performance data and dimensions

Size B02 B03 B04 B05 B06 B07 B08 B09
Torque [Nm] For reference purposes 1) 1.0 4.5 8.0 20.0 38.0 80.0 150.0 280.0
Speed of rotation max. [rpm] 10.000 8.000 6.000 5.000 4.000 3.000 3.000 2.000
Power [W] T = 20° C 9 12 20 23 32 40 55 72
d max. [mm] 2) 8 17 20 30 35 42 50 75
D [mm] 60 80 100 125 150 190 230 290
L1 [mm] 21.0 22.0 24.5 28.0 31.0 35.0 41.5 48.0
L2 [mm] 24.0 25.5 28.5 33.0 37.5 42.0 50.4 59.0
L3 [mm] 33.0 37.0 44.5 53.0 61.0 73.0 89.5 103.0
B [mm] 52 72 90 112 137 175 215 270
F [mm] 42 63 80 100 125 160 200 250
H [mm] 29 46 60 76 95 120 158 210

1) Depending on design of installation, operating and ambient conditions
2) Keyway to DIN 6885/1

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