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HomeRotary unions, slip rings and sensorsGR-2 rotary unions — 2 hydraulic lines, 240 bar

GR-2 rotary unions — 2 hydraulic lines, 240 bar

GR-2 two-line rotary unions, 240 bar. Seven GR 1, GR 5 and GR 2 part numbers, with 270° or 360° rotation and different mounting drawings.

Number of lines
2 hydraulic lines
Hose diameter
1/4" - DN 6 to 3/4" - DN 19
High pressure
Up to 240 bar

GR-2 rotary unions — 2 hydraulic lines, 240 bar | DEMAC

Technical specifications

Technical specifications

Product type

Rotary union

Number of lines

2 hydraulic lines

Application

High-pressure hydraulics, Mobile machinery and cranes, Oil

Pressure

240 bar

Hose diameter 1/4" - DN 6, 3/8" - DN 10, 1/2" - DN 13, 3/4" - DN 19
ATEX zone

No

Technical drawings View technical drawings

The section GR-2 comprises seven two-line hydraulic rotary unions: GR 1, GR 5 and GR 2. The stated maximum pressure is 24 MPa, equivalent to 240 bar ; the rotation angle depends on the part number.

To identify a replacement

  • Full part number, photograph of the union and its fittings.
  • Angular travel, fluid, working pressure and flow rate.
  • Dimensions, holes and mounting centre distances.

Part numbers and dimensions

Two-line rotary unions in the GR-2 section
Part number Lines / connections Rotation Overall length mm Stated hole diameter mm
GR 1.06 2 × 1/4" 270° 82 Ø 11
GR 1.10 2 × 3/8" 270° 82 Ø 11
GR 1.19 2 × 3/4" 270° 105 Ø 11
GR 5.06 2 × 1/4" 270° 71 Ø 11
GR 5.10 2 × 3/8" 270° 71 Ø 11
GR 2.10 2 × 3/8" 360° 136 Ø 8,5
GR 2.12 2 × 1/2" 360° 123 Ø 11
Dimensions A to D of the GR 1 / GR 5 drawing
Part number A mm B mm C mm D mm
GR 1.06 32 40 74,5 82
GR 1.10 32 40 74,5 82
GR 5.06 27 29 63,5 71
GR 5.10 27 29 63,5 71

Dimensions A to D denote different measurements on the drawing: C must not be equated with overall length D. For an exchange, compare the complete drawing and connections, not just the number of lines.

Unsure about the part number?

Tell us the number of ports, pressure and flow rate, rotational speed and working angle.

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If you know the part number, provide the full code and quantity. For a replacement, send the reel's serial number, which is needed to identify the unit to be replaced. It is shown on the identification label; if this is unavailable, see the illustrated locations on the Contact page. For a new configuration, specify the number of hoses or cables, usable length and available technical data. Tell us what you know; we will help you complete the details.
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For a replacement: a clear photo of the label showing the serial number, plus a view of the reel or its installation. If the label is unavailable, see the illustrated locations on the Contact page. You may also attach a drawing or part number. Up to 3 files, maximum 10 MB per file.

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