DEMAC range · Quotations and technical advice on request
HD rotary unions with 1 to 12 lines. Selection by part number and passage: pressure, flow rate, speed, temperature, fittings and any drain.
| Product type | Rotary union |
|---|---|
| Number of lines | 1 line, 2 hydraulic lines, 3 hydraulic lines, 4 hydraulic lines, 5 hydraulic lines, 6 hydraulic lines, 8 hydraulic lines, 12 hydraulic lines |
| Application | High-pressure hydraulics, Mobile machinery and cranes, Oil |
| Pressure | 300 bar, 350 bar, 400 bar |
| Fitting type | BSP 60° |
| Maximum fluid temperature | 80 °C, 85 °C |
| Technical drawings | View the HD schematic diagram Component identification without dimensions. Number and arrangement of ports depend on the part number. |
The rotary unions HD are selected by part number and hydraulic passage. The specialist catalogue presents versions with 1, 2, 3, 4, 5, 6, 8 and 12 lines; pressure, flow rate, speed, materials and drawing vary with the configuration.
Rotor and stator BSP fittings are identical for each passage in the table. Flow rate is stated per passage. Working and test pressures are shown separately.
| Part number | Lines | BSP rotor / stator | DN mm | Working / test bar | Max. flow rate l/min | Max. speed rpm | Mass kg |
|---|---|---|---|---|---|---|---|
| HD36.E/IV | 1 | 1" | 25 | 350 / 400 | 200 | 150 | 5.5 |
| HD36.2A | 2 | 1/4" | 7 | 300 / 400 | 40 | 30 | 2.5 |
| HD36.2B | 2 | 3/8" | 10 | 400 / 430 | 60 | 30 | 3 |
| HD36.2B/E | 2 | 3/8" | 10 | 400 / 430 | 60 | 30 | 3 |
| HD36.2C | 2 | 1/2" | 12 | 400 / 420 | 80 | 30 | 3 |
| HD36.2D | 2 | 3/4" | 19 | 300 / 350 | 150 | 15 | 5 |
| HD75.2E | 2 | 1" | 25 | 350 / 400 | 200 | 150 | 20 |
| HD36.3B | 3 | 3/8" | 10 | 350 / 400 | 80 | 15 | 4.5 |
| HD50.3D | 3 | 3/4" | 19 | 350 / 400 | 150 | 150 | 12 |
| HD75.3E | 3 | 1" | 25 | 350 / 400 | 200 | 150 | 30 |
| HD36.4B | 4 | 3/8" | 10 | 350 / 400 | 60 | 15 | 5 |
| HD36.4B/E | 4 | 3/8" | 10 | 350 / 400 | 60 | 15 | 5 |
| HD36.4C | 4 | 1/2" | 12 | 350 / 400 | 80 | 15 | 8 |
| HD75.4C | 4 | 1/2" | 12 | 350 / 400 | 80 | 15 | 16 |
| HD50.4D | 4 | 3/4" | 19 | 350 / 400 | 150 | 150 | 16 |
| HD75.4D | 4 | 3/4" | 19 | 350 / 400 | 150 | 15 | 21 |
| HD95.4E | 4 | 1" | 25 | 350 / 400 | 200 | 15 | 36 |
| HD36.5B | 5 | 3/8" | 10 | 300 / 400 | 60 | 15 | 7 |
| HD36.5C | 5 | 1/2" | 12 | 300 / 400 | 80 | 15 | 8 |
| HD10004 | 6 | 3/8" | 10 | 300 / 400 | 60 | 15 | 7 |
| HD42.6C | 6 | 1/2" | 12 | 300 / 400 | 80 | 15 | 9 |
| Part number | Passages | BSP rotor / stator | DN mm | Working / test bar | Max. flow rate per passage l/min |
|---|---|---|---|---|---|
| HD145.DE2F | 1–2 | 1 1/4" | 32 | 350 / 400 | 220 |
| HD145.DE2F | 3 | 1" | 25 | 350 / 400 | 200 |
| HD145.DE2F | 4 | 3/4" | 19 | 350 / 400 | 150 |
| HD95.3C2E | 1–3 | 1/2" | 12 | 350 / 400 | 80 |
| HD95.3C2E | 4–5 | 1" | 20 | 350 / 400 | 200 |
| HD145.D2F2G | 1 | 3/4" | 19 | 350 / 400 | 150 |
| HD145.D2F2G | 2–3 | 1 1/4" | 32 | 350 / 400 | 220 |
| HD145.D2F2G | 4–5 | 1 1/2" | 38 | 350 / 400 | 250 |
| HD100.2C2D2E | 1–2 | 1" | 22 | 300 / 350 | 200 |
| HD100.2C2D2E | 3–4 | 3/4" | 18 | 300 / 350 | 150 |
| HD100.2C2D2E | 5 | 1/2" | 14 | 300 / 350 | 80 |
| HD100.2C2D2E | 6 — drain | 1/2" | 14 | 10 / 50 | 80 |
| HD145.2BC2D2EF | 1–2 | 3/8" | 10 | 350 / 400 | 60 |
| HD145.2BC2D2EF | 3 | 1/2" | 12 | 350 / 400 | 80 |
| HD145.2BC2D2EF | 4–5 | 3/4" | 19 | 350 / 400 | 150 |
| HD145.2BC2D2EF | 6–7 | 1" | 25 | 350 / 400 | 200 |
| HD145.2BC2D2EF | 8 | 1 1/4" | 32 | 350 / 400 | 220 |
| HD105.4D4C4B | 1–4 | 3/4" | 18 | 350 / 420 | 150 |
| HD105.4D4C4B | 5–8 | 1/2" | 14 | 350 / 420 | 80 |
| HD105.4D4C4B | 9–12 | 3/8" | 10 | 350 / 420 | 60 |
| Part number | Lines | Max. speed rpm | Temperature °C | Mass kg |
|---|---|---|---|---|
| HD145.DE2F | 4 | 15 | −20/+80 | 64 |
| HD95.3C2E | 5 | 15 | −20/+80 | 31 |
| HD145.D2F2G | 5 | 15 | −20/+80 | 90 |
| HD100.2C2D2E | 6 | 12 | −10/+85 | 50 |
| HD145.2BC2D2EF | 8 | 15 | −20/+80 | 94 |
| HD105.4D4C4B | 12 | 12 | −10/+80 | 72 |
HD100.2C2D2E: passage 6 is a drain with a working pressure of 10 bar, distinct from passages 1 to 5 rated at 300 bar. A single pressure therefore does not describe this part number.
Part numbers in the first table are rated for −20 to +80 °C. HD36.E/IV is stainless steel, for hydraulic oil or water. Other sheets specify hydraulic oil and describe materials and finishes specific to each part number; HD100.2C2D2E and HD105.4D4C4B are painted.
The configurations HDAtex have a specific designation and documentation. A standard HD part number does not become HDAtex merely because its drawing is similar.
Tell us the number of ports, pressure and flow rate, rotational speed and working angle.
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