This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X20S, 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 SU32~50 Standard Cylinder SU50X20S
The AirTAC SU32~50 Standard Cylinder SU50X20S is a double-acting profile-type standard cylinder with a Ø50mm bore and 20mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X20S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke20 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X20S
- 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 SU32~50 Standard Cylinder SU50X20S
The AirTAC SU50X20S is a discontinued double-acting profile-type cylinder with a 50mm bore and 20mm stroke. Delivering 982 N push force at 0.5 MPa, it features a 1/4" port and an extruded aluminum body that is more compact than an ISO 15552 cylinder of the same bore. AirTAC replaced this legacy unit with the SAU50X20S, a direct replacement retaining the exact same bore, stroke, output force, port size, and SC-series mounting.
The SAU upgrade introduces current CMSG/DMSG/EMSG sensors, whereas this -S SKU relied on legacy CS1-B/DS1-B switches. The new SAU line also offers a SAUF variant with a built-in 4M solenoid valve, an option the SU series never had.
Airtac SU32~50 Standard Cylinder SU50X20S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X20S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X20S |
| Bore size | Ø50 mm |
| Stroke | 20 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 SAU50X20S 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 SAU50X20S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SU32~50 Standard Cylinder SU50X20S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×20 | 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 SU32~50 Standard Cylinder SU50X20S Is Used
Part Ejection
Provides a fast 20mm ejection thrust to push finished components out of automated assembly presses without extending the overall machine envelope.
Gate Diverting
Actuates small pneumatic diverter gates on conveyor lines, where the compact profile body and 982 N push force easily handle light package routing.
Replacing the Airtac SU32~50 Standard Cylinder SU50X20S with the SAU50X20S
To replace this SU50X20S, order the SAU50X20S direct equivalent, confirming the 50mm bore, 20mm stroke, 1/4" port, M16x1.5 rod thread, and SC-series mounting. Because this is a -S magnet model, you must upgrade your sensors: the legacy CS1-B/DS1-B switches will not fit the SAU, so switch to CMSG/DMSG/EMSG sensors. If your application needs true load holding on air loss, note that neither this nor the SAU locks the piston—the cushion only decelerates—so add an external rod lock or pilot-operated check valve. For higher force needs, the neighboring 63mm bore provides 1559 N push at 0.5 MPa, while a 40mm bore offers 628 N if you want a smaller footprint. The 20mm stroke is very short, so side-load risks are minimal, but always verify rod alignment.
Replacement checklist
- ✓ Same bore / stroke → SAU50X20S
- ✓ 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 SU32~50 Standard Cylinder SU50X20S FAQ
Yes, the SU50X20S is discontinued. The direct replacement is the AirTAC SAU50X20S. It matches the original 50mm bore, 20mm stroke, 982 N output force at 0.5 MPa, 1/4" port, and SC-series mounting accessories. You will need to upgrade from the old CS1-B/DS1-B switches to the new CMSG/DMSG/EMSG sensors.
This double-acting cylinder has a 50mm bore and 20mm stroke. It generates 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and a theoretical maximum of 200 kgf at 1.0 MPa. It operates at 30-800 mm/s, uses a 1/4" port, and has a 21mm adjustable air cushion at both ends.
Request a Quote for the SAU50X20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X20S replacement — usually within 7-8 hours.