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Rotary Union Info
- 12 Flow Passages
- Lightweight, Compact Design
- Low Torque Seals
- Corrosion Resistance
- NPT or BSPT Thread Connections
- Customizable Options
Part # | Overall Length | Body Diameter | Passage Size | Connection Type | Thru-bore | Slip Ring Option | Get Quote |
---|---|---|---|---|---|---|---|
UL-21121 | 6.806 | 2.187 | 0.156 | 1/8 NPT | 0.375 | Get Quote | |
UL-23121 | 14.070 | 4.438 | 0.375 | 3/8 NPT | 0.440 | Get Quote |
NOTE: All dimensions are shown in inches.
Electrical slip ring options available
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Plating and Coatings
Body Material Type: Aluminum, Shaft: E-Nickel, Housing: Red Anodize
Mounting
Tapped holes are provided on both the housing and shaft for mounting the assembly.
Available Aluminum flange can be bolted onto the end of the housing assembly for optional electrical slip ring mounting.
The flange can also be bolted to the shaft end for additional mounting configurations.
Media Types
Air, Gas
Max. Pressure *
600 PSI (40 BAR)
Max. Vacuum *
30 HG
Max. Rotational Speed *
up to 500 RPM
Temperature Range *
0° F to 220° F (-18° C to 105° C)
Min. Torque Required *
UL-21121: 8 lbs-in
UL-23121: 32 lbs-in
* 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) |
---|---|---|---|
UL-21121 | DWG | STP | |
UL-23121 | DWG | STP |
The UL Series rotary unions are available with a number of mounting flange and 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 UL 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" |
ESE224² | 8 | (2x) 2A, (2x) 10A, (1x) Ethernet | 240 | 48" | 1.680" |
ESE64² | 10 | (6x) 2A, (1x) Ethernet | 240 | 48" | 1.410" |
ESE264² | 12 | (6x) 2A, (2x) 5A, (1x) Ethernet | 240 | 48" | 1.680" |
ESE284² | 14 | (8x) 2A, (2x) 10A, (1x) Ethernet | 240 | 48" | 1.950" |
ESE2124² | 18 | (12x) 2A, (2x) 5A, (1x) Ethernet | 240 | 48" | 1.950" |
ESE24278³ | 41 | (27x) 2A, (4x) 5A, (2x) 10A, (1x) Ethernet | 240 | 48" | 3.500" |
ESE8278³ | 43 | (27x) 2A, (8x) 5A, (1x) Ethernet | 240 | 48" | 3.500" |
ESE2358³ | 45 | (35x) 2A, (2x) 10A, (1x) Ethernet | 240 | 48" | 3.500" |
ESE4358³ | 47 | (35x) 2A, (4x) 5A, (1x) Ethernet | 240 | 48" | 3.500" |
ESE438³ | 51 | (43x) 2A, (1x) Ethernet | 240 | 48" | 3.500" |
¹ES6A and ES12A only available for AP-1x1 models
²100 BaseT Ethernet Connections
³1000 BaseT Ethernet Connections