Rotary Unions SPS Series

SPS Series 1-Passage Rotary Unions & Joints

SPS Series 1-Passage Rotary Unions & Joints
Maximum Pressure See Other Pressure Options
Maximum Speed See Other Speed Options
Connection Type See Other Connection Options
Suitable Media See Other Media Options

The SPS Series single passage rotary unions are compact, lightweight and corrosion-resistant featuring a stainless steel shaft and aluminum housing. All SPS Series models come standard with a male threaded shaft and a female threaded housing for easy mounting.

Need to combine fluid with electrical power, signal and/or data transfer? No problem. The SPS Series rotary unions are designed to integrate directly with our standard electrical slip rings. See options.

Available Configurations

Part # Connection Passage Size Diameter Length Through Bore Min. Torque* Part Downloads Information
SPS-5110 [SPSM-5110]1/8"-27 NPT [Rc1/8"-28 BSPT]0.156" [3.962 mm]1.500" [38.1 mm]2.380" [60.452 mm]None8 in-lbs [0.9 Nm] Buy Now
SPS-5210 [SPSM-5210]1/4"-18 NPT [Rc1/4"-19 BSPT]0.250" [6.35 mm]1.500" [38.1 mm]2.380" [60.452 mm]None8 in-lbs [0.9 Nm] Buy Now
SPS-5310 [SPSM-5310]3/8"-18 NPT [Rc3/8"-19 BSPT]0.375" [9.525 mm]1.750" [44.45 mm]2.630" [66.802 mm]None12 in-lbs [1.36 Nm] Buy Now
SPS-5410 [SPSM-5410]1/2"-14 NPT [Rc1/2"-14 BSPT]0.500" [12.7 mm]1.750" [44.45 mm]2.630" [66.802 mm]None12 in-lbs [1.36 Nm] Buy Now
SPS-5510 [SPSM-5510]3/4"-14 NPT [Rc3/4"-14 BSPT]0.750" [19.05 mm]2.750" [69.85 mm]3.130" [79.502 mm]None16 in-lbs [1.81 Nm] Buy Now
SPS-5610 [SPSM-5610]1"-11.5 NPT [Rc1"-11 BSPT]1.000" [25.4 mm]2.750" [69.85 mm]3.130" [79.502 mm]None16 in-lbs [1.81 Nm] Buy Now

*Minimum torque required to rotate based on zero pressure with oil/hydraulic media. Required torque to rotate may be greater when using other media types or dry running. For specific torque requirements, please contact DSTI to discuss your application.

Technical Specifications

Maximum Pressure 600 PSI [40 BAR]
Maximum Speed 500 RPM
Maximum Vacuum 30 HG
Temperature Range 0° F to 220° F [-18° C to 105° C]
Suitable Media Air/Gas
Connection Type NPT, BSPT
SPS Series Rotary Unions - Housing Material
Housing: Material (Plating/Coating) Aluminum (Blue Anodize)
SPS Series Rotary Unions - Shaft Material
Shaft: Material (Plating/Coating) Stainless Steel

All values listed under Technical Specifications are dependent on a combination of all application parameters. Please note operational life is dependent upon both rotational speed and duty cycle. Contact DSTI if your application requires operating close to the maximum rotational speed with a continuous duty cycle. Applications with temperatures above 220° F (105° C) require alternative seal materials. Please consult with DSTI regarding your specific application requirements.

Available Options

Available Custom Modifications for SPS Series Rotary Unions

Custom Modifications

Easier and less expensive than you may think. We can modify our standard products to fit your project requirements.

Learn More
Electrical Slip Rings for SPS Series Rotary Unions

Electrical Slip Ring Integration

Get the complete package. With the purchase of a shaft extension, the SPS Series will integrate with our electrical slip rings for power, signal and data transfer.

View Options


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