This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X240, 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 SU40X240
The AirTAC SU32~50 Standard Cylinder SU40X240 is a double-acting profile-type standard cylinder with a Ø40mm bore and 240mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X240, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke240 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X240
- 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 SU40X240
The AirTAC SU40X240 is a discontinued double-acting profile-type cylinder with a 40mm bore and 240mm stroke. Built with an extruded aluminum barrel, it is more compact than an ISO 15552 unit of the same bore. It delivers a push force of 628 N and a pull force of 528 N at 0.5 MPa, utilizing a 1/4" port and a 16mm piston rod with an M12x1.25 thread.
AirTAC replaced this legacy unit with the SAU40X240 direct replacement. The SAU maintains the exact same body dimensions, output force, 1/4" port, and SC-series mounting accessories. A key upgrade is that the SAU uses current CMSG/DMSG/EMSG sensors, whereas this SU version lacks a magnet entirely and cannot accept any sensing switches. Furthermore, the SAU line introduces the SAUF variant with a built-in 4M solenoid valve, a feature the SU series never offered.
Airtac SU32~50 Standard Cylinder SU40X240 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X240 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X240 |
| Bore size | Ø40 mm |
| Stroke | 240 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 SAU40X240 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 SAU40X240 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 SU40X240
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×240 | 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 SU40X240 Is Used
Package Diverting
Pushes medium-weight cartons off a main conveyor line using 628 N of thrust, with the 240mm stroke clearing adjacent guide rails.
Clamp Actuation
Secures aluminum extrusions during a machining cut, applying a safe 377 N working load without distorting the workpiece.
Vertical Lifting
Raises lightweight tote bins up to 32 kg in a pick-and-place routine, relying on external guidance to prevent rod bending.
Replacing the Airtac SU32~50 Standard Cylinder SU40X240 with the SAU40X240
To replace this discontinued SU40X240, order the SAU40X240 direct equivalent, confirming the 1/4" port, M12x1.25 rod thread, and PT/G/NPT thread standard. Because this specific SKU has no magnet (-S), it cannot support position sensing; if you require switches on the new unit, you must order an SAU40X240S and use CMSG/DMSG/EMSG sensors. If you need higher force, the neighboring 50mm bore offers 982 N push at 0.5 MPa, while dropping to a 32mm bore reduces it to 402 N. For any load holding, note that a standard cylinder drifts on air loss—the 21mm adjustable cushions only decelerate near stroke ends, so add an external rod lock or pilot-operated check valve for secure positioning. At 240mm stroke, side-load and rod-bending risks are moderate, so ensure proper guide alignment to prevent premature seal wear.
Replacement checklist
- ✓ Same bore / stroke → SAU40X240
- ✓ 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 SU40X240 FAQ
Yes, the AirTAC SU40X240 is discontinued and end-of-life. The direct replacement is the SAU40X240. It shares the same 40mm bore, 240mm stroke, 628 N output force, 1/4" port, and SC-series mounting hardware, fitting directly into your existing application.
At 0.5 MPa it provides 628 N push and 528 N pull; at 0.7 MPa it pushes 879 N, and the theoretical maximum is 128 kgf at 1.0 MPa. This specific SKU has no magnet and cannot accept sensors. If sensing is required on the SAU replacement, order the -S version and use CMSG/DMSG/EMSG switches.
Request a Quote for the SAU40X240
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X240 replacement — usually within 7-8 hours.