This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU32X390S, 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 SU32X390S
The AirTAC SU32~50 Standard Cylinder SU32X390S is a double-acting profile-type standard cylinder with a Ø32mm bore and 390mm stroke, 1/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU32X390S, which matches its bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke390 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAU32X390S
- 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 SU32X390S
The AirTAC SU32X390S is a discontinued double-acting profile-type cylinder featuring a 32mm bore, 390mm stroke, and a 1/8" port. Delivering 402 N of push force at 0.5 MPa, its extruded aluminum body is more compact than an ISO 15552 cylinder of the same bore while sharing AirTAC SC-series mounting accessories.
AirTAC replaced this end-of-life unit with the SAU32X390S, a direct replacement retaining the exact bore, stroke, output force, port size, and mounting footprint. The SAU upgrade introduces current CMSG/DMSG/EMSG sensors to replace this model's legacy CS1-B/DS1-B switches, and offers a new SAUF built-in-valve variant.
Airtac SU32~50 Standard Cylinder SU32X390S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU32X390S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU32X390S |
| Bore size | Ø32 mm |
| Stroke | 390 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 1000 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAU32X390S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The SAU32X390S 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 SU32X390S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×390 | 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 SU32X390S Is Used
Small Part Ejection
Ejects machined components from a fixture using 402 N of push force at 0.5 MPa, cycling reliably at speeds between 30-800 mm/s.
Replacing the Airtac SU32~50 Standard Cylinder SU32X390S with the SAU32X390S
To replace this SU32X390S, order the SAU32X390S direct equivalent, verifying your 1/8" port threads (PT/G/NPT) and SC-series mounting (LB/FA/FB/CA/CB). Because this SKU includes a magnet (-S), note that your legacy CS1-B/DS1-B switches must change to the SAU's CMSG/DMSG/EMSG sensor family. If your application needs integrated flow control, the SAUF variant adds a built-in 4M solenoid valve the SU line lacked. For sizing alternatives, the neighboring 40mm bore yields 628 N push at 0.5 MPa, while dropping to a lower pressure reduces output accordingly. With a 390mm stroke, use external guides to prevent rod bending and side-load damage. A plain cylinder drifts on air loss—the cushions only decelerate—so add an external rod lock or pilot-operated check valve for load holding.
Replacement checklist
- ✓ Same bore / stroke → SAU32X390S
- ✓ 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 SU32X390S FAQ
Yes, the AirTAC SU32X390S is discontinued. The direct replacement is the SAU32X390S. It matches the 32mm bore, 390mm stroke, 1/8" port, output force, and SC-series mounting. You simply order the SAU32X390S, but note that the -S magnet sensor family changes from legacy CS1-B/DS1-B to the current CMSG/DMSG/EMSG switches.
The 1/8" port is fixed by the 32mm bore. It delivers 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, 724 N push at 0.9 MPa, and a theoretical maximum of 82 kgf at 1.0 MPa. The piston rod is 12mm with an M10x1.25 thread, and the adjustable air cushion is 21mm at each end.
Related AirTAC SAU Cylinders
Request a Quote for the SAU32X390S
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