This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUD50X80S, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAU replacement uses the same profile body, bore, stroke, force and SC-series mounting. It moves to the current CMSG / DMSG / EMSG sensor switches (the SU used CS1-B / DS1-B) and adds the SAUF valve-integrated option.
Airtac SUD Series Double Rod Cylinder SUD50X80S
The AirTAC Airtac SUD Series Double Rod Cylinder SUD50X80S is a double-acting profile-type standard cylinder with a Ø50mm bore and 80mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUD50X80S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke80 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUD50X80S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SUD Series Double Rod Cylinder SUD50X80S
The AirTAC SUD50X80S is a double-acting, double-rod profile cylinder featuring an extruded aluminum barrel that is more compact than an ISO 15552 unit of the same bore. Because a rod exits both ends on a single piston, both faces use the rod-side area, meaning push and pull force are equal. This specific SUD model is discontinued and the direct replacement is the SAUD50X80S, which retains the same 50mm bore, 80mm stroke, force, 1/4" port, and FA/LB mounting. The SAUD upgrade utilizes current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches used here, and also offers the SAUF built-in-valve variant the SU line lacked.
With a 20mm rod, M16x1.5 rod-end thread, and 21mm adjustable air cushions at each end, it delivers equal force both ways of 825N at 0.5MPa, 1154N at 0.7MPa, and 1484N at 0.9MPa. The double-rod design provides anti-rotation stability and allows the back rod to carry a sensor cam or drive a second tool simultaneously. Note that a plain cylinder does not hold loads on air loss; the cushion only decelerates near stroke end, so an external rod lock is required for held loads.
Airtac SUD Series Double Rod Cylinder SUD50X80S Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD50X80S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD50X80S |
| Bore size | Ø50 mm |
| Stroke | 80 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M16×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 21 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAUD50X80S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAUD50X80S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SUD Series Double Rod Cylinder SUD50X80S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×80 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SU-family variants: SUD (double rod), SUJ (adjustable stroke) — each maps to its SAU equivalent (SUD→SAUD, SUJ→SAUJ). The current SAU line adds the SAUF valve-integrated option.
Where the Airtac SUD Series Double Rod Cylinder SUD50X80S Is Used
Dual-Tool Drive Station
Simultaneously drives two opposing forming tools from one piston, utilizing the equal both-ways force to ensure perfectly balanced machining pressure on both strokes.
Anti-Rotation Transfer Pusher
Pushes workpieces along a conveyor without rotational drift, using the double-rod geometry to maintain precise alignment during high-speed cycling.
Symmetric Sorting Gate
Actuates a bi-directional sorting gate where the back rod carries a sensor cam, providing reliable position feedback for both the extend and retract movements.
Replacing the Airtac SUD Series Double Rod Cylinder SUD50X80S with the SAUD50X80S
To replace the discontinued SUD50X80S, select the SAUD50X80S, which is a direct upgrade keeping the bore, stroke, 1/4" port, and FA/LB mounting identical. When sizing both ways, verify the equal force both ways (825N at 0.5MPa, 1154N at 0.7MPa, 1484N at 0.9MPa) meets your needs, or step to neighboring bores (40mm or 63mm) if a different capacity is required. A double rod is the right choice when you need anti-rotation stability or want to drive two tools from one cylinder. Because this unit has the -S magnet option, you must change from the legacy CS1-B/DS1-B switches to the modern CMSG/DMSG/EMSG sensors used on the SAUD. For strokes of 300mm or longer, carefully manage side-load to prevent guide bearing wear. Mounting compatibility is strictly with the AirTAC SC series.
Replacement checklist
- ✓ Same bore / stroke → SAUD50X80S
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S): sensor family CS1-B → CMSG
- ✓ Mounting reused (FA/FB/CA/CB/LB)
- ✓ Need a built-in valve? → SAUF
Airtac SUD Series Double Rod Cylinder SUD50X80S FAQ
Yes, the SUD50X80S is discontinued. The direct replacement is the SAUD50X80S. It keeps the same 50mm bore, 80mm stroke, equal both-ways force, 1/4" port, and FA/LB mounting. You will need to upgrade the sensors from the legacy CS1-B/DS1-B to the current CMSG/DMSG/EMSG switches.
Because it is a double-rod cylinder, the force is equal both ways: 825N at 0.5MPa, 1154N at 0.7MPa, and 1484N at 0.9MPa. The air port is 1/4" (default PT thread). It operates at 0.15-1.0MPa with a speed range of 30-800mm/s.
Related AirTAC SAU Cylinders
Request a Quote for the SAUD50X80S
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