This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X240S, 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 SU40X240S
The AirTAC SU32~50 Standard Cylinder SU40X240S 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 SAU40X240S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke240 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X240S
- 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 SU40X240S
The AirTAC SU40X240S is a discontinued double-acting profile-type cylinder with a 40mm bore and 240mm stroke. It delivers 628N push force at 0.5MPa via a 1/4" port. AirTAC replaced this unit with the SAU40X240S, a direct alternative retaining the exact body, stroke, force, and SC-series mounting footprint.
When upgrading to the SAU40X240S, your bore and force remain identical, but the legacy CS1-B/DS1-B switches used on this -S magnet model are replaced by modern CMSG/DMSG/EMSG sensors. The SAU family also introduces a SAUF variant with a built-in 4M solenoid valve, an option the original SU line never offered.
Airtac SU32~50 Standard Cylinder SU40X240S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X240S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X240S |
| 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 SAU40X240S 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 SAU40X240S 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 SU40X240S
| 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 SU40X240S Is Used
Package Diverting
Actuates diverting arms on packaging lines, utilizing the 240mm stroke to push cartons cleanly into secondary lanes without overloading the 628N force capacity.
Pallet Stopper Gate
Controls pallet flow on roller conveyors by raising and lowering a stop gate, safely handling loads up to the 32kg vertical lift threshold.
Component Clamping
Secures medium-sized aluminum housings during light machining, providing reliable clamping force while fitting into compact machinery envelopes.
Replacing the Airtac SU32~50 Standard Cylinder SU40X240S with the SAU40X240S
To replace the SU40X240S, order the SAU40X240S and verify your 1/4" port, M12x1.25 rod thread, and SC-series mounting accessories. Because this SKU includes a magnet (-S), you must update your position sensing: the SU used CS1-B/DS1-B switches, whereas the SAU requires CMSG/DMSG/EMSG sensors. If you need more force, the 50mm bore provides 982N push at 0.5MPa; if less is required, the 32mm bore offers 402N. Remember that a standard cylinder drifts without live air—the 21mm cushions only decelerate the piston, so add an external rod lock or pilot-operated check valve for secure load holding. At 240mm stroke, ensure adequate guidance to prevent rod bending under side loads.
Replacement checklist
- ✓ Same bore / stroke → SAU40X240S
- ✓ 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 SU40X240S FAQ
Yes, the SU40X240S is discontinued. The direct replacement is the AirTAC SAU40X240S. It shares the same 40mm bore, 240mm stroke, 628N force, 1/4" port, and SC-series mounting, so it drops right into your existing application.
At 0.5MPa it provides 628N push and 528N pull; at 0.7MPa it pushes 879N, with a theoretical max of 128kgf at 1.0MPa. Because this is an -S magnet model, the legacy CS1-B/DS1-B switches are obsolete; the SAU replacement requires CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X240S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X240S replacement — usually within 7-8 hours.