LT 2 Passage Rotary Union
Designed for air, vacuum and fluid use, the 2 passage LT Series rotary unions are ideal for a number of automation and robotic applications. All LT Series rotating union designs feature aluminum construction for low weight and excellent durability.
| part # | thru bore | overall diameter | overall length | min torque* | passage size | slip ring option | |
|---|---|---|---|---|---|---|---|
| LT-2121 | 0.375 | 2.187 | 2.596 | 3 | 0.156 | View Model | |
| LT-2321 | 0.375 | 3.437 | 4.624 | 8 | 0.375 | View Model |
All dimensions are shown in inches. Click here to convert to Metric
*This is the minimum torque required to rotate based on zero pressure measured in inch-pounds
Standard electrical slip ring options available.
| Max. Pressure¹ | 600 PSI (40 BAR) |
| Max. Vacuum¹ | 30 HG |
| Max. Rotational Speed¹ | up to 500 RPM |
| Temperature Range¹ | 0° F to 220° F (-18° C to 105° C)² |
¹Values are dependent on a combination of all application parameters. Please consult with DSTI.
²Applications with temperatures above 220° F (105° C) require alternative seal materials. Please consult with DSTI.
Performance Data: Pressure vs Speed (Continuous)
This data is to be used as a general guideline. Please consult DSTI about your specific application.
LT-21xxx Series
LT-23xxx Series
Performance Data: Pressure vs Torque
This data is to be used as a general guideline. Please consult DSTI about your specific application.
*Torque data based on all passages (ports) pressurized.
LT-21xxx Series
LT-23xxx Series
| Connection Sizes | 1/8" & 3/8" - Other sizes available upon request. |
| Connection Type | NPT, Rc BSPT, O-ring Face Seal |
| Plating and Coatings | Body Material Type: Aluminum
Shaft: E-Nickel Housing: Blue Anodize |
| Mounting Options | 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. To request this option add -F to end of product part number. |
| Slip Ring Options | The LT Series unions are available with a number of Electrical Slip Ring options for power, signal and data transfer. The assembly is available with an aluminum cover to protect the slip ring during use in demanding environments. |
| Media Types | Coolant, Gases, Oil, Steam¹, Water |
| Seal Type | PTFE Filled Nitrile O-Ring (Alternative seal types available. Please consult with DSTI) |
| O-ring Face Seal Options | O-ring face seal options available for all LT Series models. Please add "-OF" to the part number. Example: LT-2121-OF |
¹High temperature applications may require alternative seal materials. Please consult with DSTI.
Note: O-ring face seal options are available for face-mounting a LT Series rotary union. Please add "-OF" to the part number --- Example: LT-2121-OF. For questions, please consult DSTI.
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