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HF 3 Flow Passage Rotary Unions

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Rotary Union Info

  • 3 Flow Passages
  • Large Flow Path
  • High Flow Volume
  • Protected Ball Bearings
  • SAE Thread Connections
Part #Overall LengthBody DiameterPassage SizeConnection TypeThru-boreSlip Ring OptionGet Quote
HF-35319.5506.4380.750#12 SAE0.750Get Quote
HF-363110.3036.4380.875#16 SAE0.750Get Quote
HF-373111.3707.4381.250#20 SAE0.750Get Quote
HF-383112.2938.9381.500#24 SAE0.750Get Quote

NOTE: All dimensions are shown in inches.

Electrical slip ring options available

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Plating and Coatings
Body Material Type: Alloy Steel - QPQ Plating

Mounting
Shaft configuration: bolt slots for flange mounting. Housing: tapped holes on end of the housing for mounting assembly.

Media Types
Air, Gas, Coolant*, Oil/Hydraulic*, Water/Glycol*

*Suitable Water/Glycol or Coolant media must have rust inhibitors present. Oil/Hydraulic media must be petroleum-based. Please consult with SRS.

Max. Pressure *
5000 PSI (345 BAR)

Max. Vacuum *
30 HG

Max. Rotational Speed *
up to 50 RPM

Temperature Range *
0° F to 220° F (-18° C to 105° C)

Min. Torque Required *
HF-3531: 50 lbs-ft
HF-3631: 50 lbs-ft
HF-3731: 150 lbs-ft
HF-3831: 150 lbs-ft

* Values are dependent on a combination of all application parameters.

Temperatures outside of the recommended range may require alternative seal materials. Please consult with SRS.

Part # PDF 2D Drawing (.pdf) DWG 2D Drawing (.dwg) STEP 3D CAD (.stp)
HF-3531PDFDWGSTP
HF-3631PDFDWGSTP
HF-3731PDFDWGSTP
HF-3831PDFDWGSTP

The HF Series rotary unions are available with a number of standard slip ring options (up to 56 circuits) for power, signal and data transfer. Slip ring assemblies are also available with protective aluminum covers for use in demanding environments and applications.

Please let us know your electrical requirements and we can make a recommendation for the best slip ring to integrate with your HF Series rotary union.

Electrical Slip Ring Information Needed:

  • Total Number of Circuits
  • Amperage Requirements per Circuit
  • Voltage Requirements per Circuit

Standard Electrical Slip Ring Options:

part # Circuits Amps/Circuit Voltage Lead Wire Length Capsule Length
ES6A¹ 6 2 120 48" 0.58"
ES6 6 2 240 48" 0.57"
ES12A¹ 12 2 120 48" 0.83"
ES12 12 2 240 48" 0.84"
ES18 18 2 240 48" 1.11"
ES24 24 2 240 48" 1.38"
ES36 36 2 240 48" 2.60"
ES56 56 2 240 48" 3.50"
ESM36 9 (3x) 10A (6x) 2A 240 48" 1.375"
ESM312 15 (3x) 5A (12x) 2A 240 48" 1.375"
ESM420 24 (4x) 10A (20x) 2A 240 48" 2.06"
ESM428 32 (4x) 5A (28x) 2A 240 48" 2.06"
ESM440 44 (4x) 10A (40x) 2A 240 48" 2.96"
ESM448 52 (4x) 5A (48x) 2A 240 48" 2.96"
ESE224²8(2x) 2A, (2x) 10A, (1x) Ethernet24048"1.680"
ESE64²10(6x) 2A, (1x) Ethernet24048"1.410"
ESE264²12(6x) 2A, (2x) 5A, (1x) Ethernet24048"1.680"
ESE284²14(8x) 2A, (2x) 10A, (1x) Ethernet24048"1.950"
ESE2124²18(12x) 2A, (2x) 5A, (1x) Ethernet24048"1.950"
ESE24278³41(27x) 2A, (4x) 5A, (2x) 10A, (1x) Ethernet24048"3.500"
ESE8278³43(27x) 2A, (8x) 5A, (1x) Ethernet24048"3.500"
ESE2358³45(35x) 2A, (2x) 10A, (1x) Ethernet24048"3.500"
ESE4358³47(35x) 2A, (4x) 5A, (1x) Ethernet24048"3.500"
ESE438³51(43x) 2A, (1x) Ethernet24048"3.500"

¹ES6A and ES12A only available for AP-1x1 models
²100 BaseT Ethernet Connections
³1000 BaseT Ethernet Connections

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