This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X140S, 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 SU40X140S
The AirTAC SU32~50 Standard Cylinder SU40X140S is a double-acting profile-type standard cylinder with a Ø40mm bore and 140mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X140S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke140 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X140S
- 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 SU40X140S
The AirTAC SU40X140S is a discontinued double-acting profile-type cylinder with a 40mm bore and 140mm stroke. Built with an extruded aluminum barrel, it is more compact than an ISO 15552 cylinder of the same bore.
Because this SU model is end-of-life, AirTAC replaced it with the exact direct replacement SAU40X140S. You get the same body profile, 1/4" port, M12x1.25 rod thread, and SC-series mounting accessories. The SAU upgrade uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches found on this -S SKU, and it introduces the SAUF built-in 4M solenoid valve variant that the SU line never offered.
Airtac SU32~50 Standard Cylinder SU40X140S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X140S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X140S |
| Bore size | Ø40 mm |
| Stroke | 140 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| 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 1200 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAU40X140S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
The SAU40X140S 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 SU40X140S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×140 | 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 SU40X140S Is Used
Package Diverting
Pushes lightweight cartons off a sorting line using the 628 N push force at 0.5 MPa, with the 140mm stroke clearing guide rails.
Clamp Actuation
Secures medium workpieces in a machining fixture, where the 528 N pull force at 0.5 MPa holds the part firmly against the stop.
Replacing the Airtac SU32~50 Standard Cylinder SU40X140S with the SAU40X140S
To replace this discontinued SU40X140S, order the SAU40X140S direct equivalent, verifying your 1/4" port, M12x1.25 rod thread, 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 CMSG/DMSG/EMSG family on the new SAU cylinder. For sizing both ways: a 32mm bore provides 402 N push at 0.5 MPa (smaller), while a 50mm bore offers 982 N (larger). Remember that a plain cylinder does not hold load without live air; the 21mm adjustable cushion only decelerates. For suspended loads, add an external rod lock or pilot-operated check valve. If you need self-switching, consider the SAUF valve-integrated option.
Replacement checklist
- ✓ Same bore / stroke → SAU40X140S
- ✓ 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 SU40X140S FAQ
Yes, the SU40X140S is discontinued. The direct replacement is the AirTAC SAU40X140S. It matches the 40mm bore, 140mm stroke, 628 N output force, 1/4" port, and SC-series mounting. You simply order the SAU equivalent.
The SAU40X140S provides 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, and a theoretical max of 128 kgf at 1.0 MPa. Because your old SU used a magnet with CS1-B/DS1-B switches, you must upgrade to CMSG/DMSG/EMSG sensors on the SAU replacement.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X140S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X140S replacement — usually within 7-8 hours.