Rotary electrical joint with hollow shaft

Through-bore Slip Rings

  • Through-bore 3 to 100mm
  • Many sizes
  • Combination power and signals
  • Protection up to IP65
  • Description
  • Good to know

  • Downloads

Hollow shaft slip rings - for price sensitive applications, quick delivery

The C Series Hollow Shaft Slip Rings are cost effective and short lead time solutions when applications require a through bore that can be easily mounted on the customer's application. These electrical rotary joints are available in a very wide range of sizes, hollow shaft diameters (3mm up to 100mm) and countless combinations of power and signal rings. The used proven fiber brush technology and the gold-gold contacts for the signal rings, ensure long life and low electrical noise, which also enables high data rate (up to 1Gbps) fieldbus transmission. Customized configurations such as special connectors and cables, as well as combinations with media rotary unions (air, water, oil, etc.) and fiber optics rotary joints can be easily implemented.

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Slip rings from TDS Precision Products GmbH: Highest quality for highest requirements

General description of slip rings

Slip rings transmit signals or electrical power from a fixed structure to a movable one, ensuring continuous rotation and preventing that the electrical conductors are stressed by mechanical torsion. The slip rings are also known as: electric rotary joint, electric collector, electric joint or electric coupling

What are slip rings made of?

Slip rings consist of two parts: an outer one called STATOR (because it is normally stationary) consisting of brushes made of precious material (gilded or silver plated copper) and an internal part called ROTOR (because it normally rotates) also consisting of rings made with precious materials. Operation is reversible, i.e. the external part, which is normally fixed, can be made to rotate and, as a result, the internal part (which normally rotates) can be kept fixed.

What is special about slip rings from TDS Precision Products GmbH?

Our electrical slip rings are characterized by particularly high-quality brushes and rings: We use special precious metals and bearings to manufacture these components. The high quality of the materials and the special geometry of the components make them very robust. As a customer, you benefit from these ideal properties thanks to a product service life of up to 50 million revolutions.

Slip rings for numerous applications

We offer slip rings for transmitting power and signals in various designs, each optimized for specific applications. These include electrical slip rings with hollow shafts as well as slip ring bodies with Ethernet cables or open, encapsulated and protected models. Our supplier factories manufacture these products under strict quality criteria and subject them to regular testing.

How do I install/mount my slip ring in my system?

CAUTION: Because of possible geometric mismatching between the customer’s application and the slip ring, “hard mounting” of both ends of the slip ring (i.e., securing the rotor and stator such that there is NO floating during operation) is not recommended and may cause premature failure..

Capsule slip rings, flange mount:

1) The slip ring enclosure is designed to be flange mounted with a cantilevered housing.
2) The rotor must be driven with a flexible coupling (e.g., rubber hose, spiral, or bellows) to compensate for any eccentricities during assembly. The rotor strands can be used as a flexible coupling for operation at speeds up to 5 rpm.
3) Use 3 bolts with washers to secure the slip ring. If lock washers are also used, flat washers should be installed between the lock washers and the flange. (Screws and washers are not included in the delivery)
4) The slip ring is not designed to support the weight of the unit to which it is connected. Rotating units should be secured so that no axial or radial load is applied to the rotary electrical rotary joint.
5) The slip ring should be protected from dust and moisture. For outdoor installations, the slip ring should be installed in a weatherproof enclosure.
6) Secure all wiring so that it does not rub against any surface when the unit is rotating. When routing and securing the cables, ensure that there is no side loading of the slip ring.

Mounting hollow shaft slip rings (rotary unions with through hole):

SHAFT MOUNTED UNITS
1) Position the slip ring at the desired location and tighten the two set screws on the shaft equally at both ends of the joint. 
2) Route the wiring and make the necessary connections. Make sure that the wiring does not restrict the free rotation of the slip ring.
3) Insert a screw or dowel (not supplied) into the anti-rotation device.

FLANGED UNITS

1) Align the mounting holes in the flange with the mounting base and install washers and thread forming screws (NOT IN SUPPLY) for plastic. Tighten the screws securely.
2) Route the wiring and make the necessary connections. The wiring must not restrict the free rotation of the slip ring.
3) Insert a screw or dowel (not supplied) into the anti-rotation device.

Article No. Through-bore Diameter No. of circuits Current Voltage Feature/Option Images 3D Data sheet Order Wishlist
SVTS C 01 3mm 17mm up to 8 2A 240V Cable length selectable Order
SVTS C 02 4.5mm 22mm up to 12 2A 240V Flange selectable Order
GT0729 7mm 29mm up to 12 5 or 10A 240V High speed Order
GT1235 12.7mm 35mm up to 24 5A 240V High speed Order
SVTS C 03 12.7mm 54mm up to 24 5A 240V High speed Order
GT2045 20mm 45mm up to 24 5A 240V High speed Order
SVTS C 04 25.4mm 78mm up to 48 2 or 15A up to 600V IP65, Ethernet Order
SVTS C 05 38.1mm 99mm up to 48 2 or 15A up to 600V Ethernet, IP65, pneumatic Order
SPT050-104 50mm 104mm up to 24 10A 500V Signal or power Order
SVTS C 06 50mm 120mm up to 72 5 or 20A up to 600V IP65, Ethernet Order
SVTS C 07 60mm 135mm up to 96 5 or 20A up to 600V IP65 Order
SVTS C 08 70mm 155mm up to 96 5 or 20A up to 600V IP65 Order
SVTS C 09 80mm 180mm up to 96 5 or 20A up to 600V IP65 Order
SVTS C 10 90mm 190mm up to 96 5 or 20A up to 600V IP65 Order
SVTS C 11 100mm 203mm up to 80 5 or 20A up to 600V IP65 Order