Rotary unions and hybrid joints
Moog Model 70
Low-speed multi-passage fluid rotary union for gases and liquids.
Key specifications
| Speed (max) | 30 rpm |
|---|---|
| Temperature (max) | 100 °C |
Summarised in our own words from Moog Inc.'s published data; series maxima, individual models vary. Last checked 2026-10-29. Source 1
Notes on this data
Up to 13 channels, 1,000 psi; 100 °C gases / 60 °C liquids.
Specify Motion is not affiliated with Moog Inc.. Moog and Model 70 are used only to identify the product. Comparisons use published figures; always confirm against the current datasheet.
Typical applications
Alternatives that meet or exceed these figures
Engineers often come to us with a Moog part number and leave with an alternative that is easier to source, quicker to deliver or a better fit for the machine. These 2 series from our supply network are the closest match on published figures.
A rotary union that passes air, gases or fluids through rotating interfaces, optionally combined with electrical circuits in one unit. Size, ports and channel count are customised to the machine.
| Published maximum | Model 70 | QR Series Pneumatic/Hydraulic Rotary J… |
|---|---|---|
| Circuits | — | 24 |
| Current per circuit | — | 10 A |
| Speed | 30 rpm | 100 rpm meets or exceeds |
| Voltage | — | 240 V |
Combined units passing hundreds of electrical circuits plus up to 16 gas or liquid channels, with pressures of 10 MPa or more.
| Published maximum | Model 70 | Pneumatic/Hydraulic Integrated Electri… |
|---|---|---|
| Circuits | — | 48 |
| Current per circuit | — | 30 A |
| Speed | 30 rpm | 300 rpm meets or exceeds |
| Bore | — | 85 mm |
Figures are the highest published for each series and are not always measured the same way. A higher figure is not automatically a better choice: mounting, duty cycle, feedback, connectors and approvals matter too. An engineer will check the fit against your application before recommending anything.
Other rotary unions and hybrid joints series
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