Nok Corporation
Nok Conductive Ring
Manufacturer: Nok.
Features
- The shaft and housing are conducted, and electromagnetic noise generation due to charging of the shaft and electrolytic corrosion of the bearing part are suppressed.
- Compared to conventional structures (earth brushes, knuckle grounds, etc.), it is possible to save space and reduce costs.
- Conductivity can be ensured even in the dynamic environment associated with rotation.
Comparison with conventional structures
| Product Name | Earth Brush / Knuckle Earth | Oil Seal + Conductive PTFE (None-Side Lip) | Oil Seal + Conductive PTFE (Have Side Lip) | Conductive PTFE |
|---|---|---|---|---|
| Structure Type | Currently Structure | Conductive Ring | Conductive Ring | Conductive Ring |
| Operating Environment | Both Side Air | One Side Oil | One Side Oil | Both Side Oil (or Air) |
| Overview | Connects to motor / body earth via Earth Brush and Knuckle | Conductive bus integrated with seal | Conductive bus with side lip integrated | Full PTFE integrated conductive path |
| Conductive Performance | +++ | ++ (5Ω/degree) | ++ (5Ω/degree) | ++ (5Ω/degree) |
| Space Saving | + | ++ | +++ | ++ |
