Through bore slip rings are used in applications where e.g. medium needs to flow through the slip ring as in circular reclaimers or the inner space is needed for different parts or equipment. These slip ring types are used also e.g. in many cranes.
Through bore slip rings produced by Combinent have typically through bore size between 0.5m to 2m.
Split versions may have through bore with diameter of several meters. Combinent through bore slip rings are ready for installation units including enclosure, bearings, wiring, connectors, terminal boxes and requested optional equipment.
Specifications | |
Power | No. of ways: any Voltage: up to 690V Current: typically 100- 400A, also >1000A possible |
Signal | No. of ways: any Current: up to 10A |
Size | Inner diameter: typically 0.5m – 2m. Also larger diameters available. |
Enclosure & accessories | Includes enclosure, bearings, wiring, connectors and terminal boxes.IP rating typically up to 54. Also higher ratings available. |
Other spesific features | ATEX-proof designs available.Revolving monitor sensors and cabinet heaters available. For low speed applications. Low maintenance need. |
Project examples
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Type:
Large through bore slip rings
Application:
Stackers and Reclaimers
Number of rings:
43 signal, 4+3 power
Voltage:
230 V signal, 690 V power
Current:
10A signal, 40+100A power
Size (mm):
1000x1000x1200 (WxLxH)
Through bore (mm):
ø700
Speed:
max. 25 rpm
Ex II 3D Ex tc IIIC 80°C, speed&location monitoring

Type:
Large through bore slip rings
Application:
Stackers and Reclaimers
Number of rings:
32 signal, 4 power
Voltage:
690 V
Current:
10 A signal, 250 A power
Size (mm):
ø1200, height 1200
Through bore (mm):
ø605
Speed:
max. 25 rpm
Optional: speed&location monitoring

Type:
Large through bore slip rings
Application:
Offshore Cranes
Number of rings:
24
Voltage:
690 V
Current:
10 A
Size (mm):
900x900x570 (WxLxH)
Through bore (mm):
ø400
Speed:
max. 5 rpm
Optional; hydraulic swivel, heater, speed&location monitoring

Type:
Large through bore slip rings
Application:
Stackers and Reclaimers
Number of rings:
21 signal, 4 power
Voltage:
690 V
Current:
10 A signal, 100 A power
Size (mm):
1150x1150x910 (WxLxH)
Through bore (mm):
ø505
Speed:
max. 25 rpm
Optional; speed&location monitoring

Type:
Large through bore slip rings
Application:
Stackers and Reclaimers
Number of rings:
25 signal, 4 power
Voltage:
690 V
Current:
10 A signal, 100 A power
Size (mm):
846x846x1000 (WxLxH)
Through bore (mm):
ø505
Speed:
max. 25 rpm
Optional: heaters, speed&location monitoring

Type:
Large through bore slip rings
Application:
Stackers and Reclaimers
Number of rings:
21 signal, 4 power
Voltage:
690 V
Current:
10 A signal, 200 A power
Size (mm):
1300x1300x910 (WxLxH)
Through bore (mm):
ø710
Speed:
max. 25 rpm
Optional; speed&location monitoring

Type:
Large through bore slip rings
Application:
Stackers and Reclaimers
Number of rings:
24 signal, 4 power
Voltage:
690 V
Current:
10 A, signal 400 A
Size (mm):
1200x1200x1200 (WxLxH)
Through bore (mm):
ø670
Speed:
max. 25 rpm
Optional: heaters, speed&location monitoring

Type:
Large through bore slip rings
Application:
Marine Propulsion Systems
Number of rings:
12
Voltage:
24 V / 690 V
Current:
10 A
Size (mm):
1350x1350x410 (WxLxH)
Through bore (mm):
ø926
Speed:
max. 25 rpm
Optional; speed&location monitoring

Type:
Large through bore slip rings
Application:
Stackers and Reclaimers
Number of rings:
20 signal, 4 power
Voltage:
690 V
Current:
10 A signal, 200 A power
Size (mm):
1342x1342x680 (WxLxH)
Through bore (mm):
ø854
Speed:
max. 25 rpm
Optional: heaters, speed&location monitoring

Type:
Large through bore slip rings
Application:
Stackers and Reclaimers
Number of rings:
20 signal, 4 power
Voltage:
690 V
Current:
10 A signal, 100 A power
Size (mm):
810x810x715 (WxLxH)
Through bore (mm):
ø505
Speed:
max. 25 rpm
Optional: heaters, speed&location monitoring

Type:
Large through bore slip rings
Application:
Stackers and Reclaimers
Number of rings:
22 signal, 4 power
Voltage:
690 V
Current:
10 A signal, 200 A power
Size (mm):
1000x1000x783 (WxLxH)
Through bore (mm):
ø700
Speed:
max. 25 rpm
Optional: heaters, speed&location monitoring

Type:
Large through bore slip rings
Application:
Stackers and Reclaimers
Number of rings:
23 signal, 4 power
Voltage:
690 V
Current:
10 A signal, 200 A power
Size (mm):
1000x1000x100 (WxLxH)
Through bore (mm):
ø700
Speed:
max. 25 rpm
Optional: heaters, speed&location monitoring