SPS Series 1-Passage Rotary Unions & Joints
The SPS Series single passage rotary unions are compact, lightweight and corrosion-resistant featuring a stainless steel shaft and hardcoat anodized aluminum housing. All models come standard with a male NPT threaded shaft connection, a female NPT threaded housing connection and two tapped holes on the end of housing for easy equipment integration.
The shaft, housing and seal materials and design makes this an excellent solution when transferring water, coolant, hydraulic oil or air/gas (under pressure or vacuum) from a stationary source to a rotating component.
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 thru-bore electrical slip rings. See options.
|Part #||Connection||Passage Size||Diameter||Length||Through Bore||Min. Torque*||Part Downloads||Information|
|SPS-5210||1/4"-18 NPT||0.250" [6.35 mm]||1.500" [38.1 mm]||2.380" [60.452 mm]||None||1 in-lbs [0.11 Nm]||Buy Now|
|SPS-5410||1/2"-14 NPT||0.500" [12.7 mm]||1.750" [44.45 mm]||2.630" [66.802 mm]||None||2 in-lbs [0.23 Nm]||Buy Now|
|SPS-5610||1"-11.5 NPT||1.000" [25.4 mm]||2.750" [69.85 mm]||3.130" [79.502 mm]||None||3 in-lbs [0.34 Nm]||Buy Now|
|SPS-5910||2"-11.5 NPT||2.000" [50.8 mm]||3.940" [100.076 mm]||3.690" [93.726 mm]||None||4 in-lbs [0.45 Nm]||Buy Now|
*Minimum torque required to rotate based on zero pressure with Oil/Hydraulic media (or Air/Gas media for SPS Series). 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.
*Oil/Hydraulic media must be petroleum-based. The use of Water media with temperatures above 212° F (100° C) requires alternative seal materials. Please consult with DSTI for approval. 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. The use of Water media with temperatures above 212° F (100° C) require alternative seal materials. Please consult with DSTI regarding your specific application requirements.
Easier and less expensive than you may think. We can modify our standard products to fit your project requirements.Learn More
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