Slip rings & brush holders
Self-assembly systems and bearing slip rings
Slip rings or slip ring collectors are used in rotating electric machines. This segment includes 3-phase AC motors, asynchronous motors or slip ring rotor motors that are among the main fields of application.Schleifringe oder Schleifringkörper kommen in elektrischen, umlaufenden Maschinen zum Einsatz. 
Working, control, signal and measuring currents are thus transmitted from stationary to rotating components. The current is tapped by our brush holders that are also used, for example, in the SEA and SER systems. Precious metals are used here again for data streams.
As different manufacturing methods are employed for the slip ring collectors, we distinguish between the following versions:
Press-fit slip ring collectors
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High resistance to vibration 
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High shock resistance
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Good thermal endurance, max. up to 200° C
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Highly tropic proof
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Circumferential speeds of up to 40 m/s
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Max. diameter of the slip rings 350 mm
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Max. insulator length 420 mm
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Max. filling weight of the pellets approx. 45 kg
Injection-moulded slip ring collectors
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Max. wall thickness 10 mm
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Max. outside diameter 100 mm
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Max. filling weight from 0.4 up to 0.6 kg
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Plastic with 30% glass fibre reinforcement
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Steady-state temperatures of max. 120 °C
Shrink-fit slip ring collectors
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Dimensions up to 1 metre diameter
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Current carrying capacity up to 10,000 ampere
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High current voltages can be transmitted
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Exposed slip rings are ventilated and cooled during rotation => Advantages for heavy-duty operating conditions in enclosed motors
Application examples
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Stationary and mobile slewing cranes (mobile cranes)
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Cable drums
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Road construction machinery, e.g. soil tampers, concrete laying machines
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Plastic, textile and printing machines (heated rolls)
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Electromagnetic clutches
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Electroplating
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Cable stranding machines
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Winding machines
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Operating theatre lights and monitors
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Fork-lift trucks
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Shredders and crushers
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Fans
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Splitting machines
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Refining machines
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Mixing machines
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Pumps
When submitting enquiries, please use the following sketch and indicate the main dimensions of your interference edges as well as the required currents and voltages. These data will enable us to offer you one of our numerous standard collectors.
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