This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X340S, 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 SU40X340S
The AirTAC Airtac SU32~50 Standard Cylinder SU40X340S is a double-acting profile-type standard cylinder with a Ø40mm bore and 340mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X340S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke340 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X340S
- 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 SU40X340S
The AirTAC SU40X340S is a discontinued double-acting profile-type cylinder with a 40mm bore and 340mm stroke. Built with an extruded aluminium barrel, it is more compact than an ISO 15552 unit of the same bore and delivers 628N push / 528N pull at 0.5MPa. AirTAC replaced this with the SAU40X340S, a direct upgrade retaining the exact 1/4 port, M12x1.25 rod thread, force and SC-series mounting.
The SAU body switches to current CMSG/DMSG/EMSG sensors (this legacy SU-S used CS1-B/DS1-B switches) and introduces the SAUF built-in-valve variant the original line lacked. Note that a plain cylinder drifts on air loss; the cushions only decelerate, so fit an external rod lock for held loads.
Airtac SU32~50 Standard Cylinder SU40X340S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X340S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X340S |
| Bore size | Ø40 mm |
| Stroke | 340 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 SAU40X340S 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 SAU40X340S 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 SU40X340S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×340 | 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 SU40X340S Is Used
Package Diversion
Pushes lightweight totes on a packaging line using the 628N push force at 0.5MPa, with the 340mm stroke clearing adjacent conveyor lanes.
Press Ejection
Ejects machined parts from a fixture using the compact profile body, saving space compared to standard ISO cylinders of the same 40mm bore.
Replacing the Airtac SU32~50 Standard Cylinder SU40X340S with the SAU40X340S
To replace this discontinued SU40X340S, order the SAU40X340S direct equivalent, verifying your 1/4 port thread (PT/G/NPT) and SC-series mounting (LB/FA/FB/CA/CB). Because the -S magnet is present, you must upgrade your legacy CS1-B/DS1-B switches to the SAU-compatible CMSG/DMSG/EMSG family. For sizing alternatives, a 32mm bore yields 402N push at 0.5MPa while a 50mm bore provides 982N. At 340mm stroke, prevent rod bending by guiding the load externally to avoid side-load damage. If you need positive holding, add a pilot-operated check valve or rod lock, as the cylinder alone cannot hold a load without live air. For self-switching needs, explore the new SAUF valve-integrated option.
Replacement checklist
- ✓ Same bore / stroke → SAU40X340S
- ✓ 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 SU40X340S FAQ
Yes, the SU40X340S is discontinued. The direct replacement is the AirTAC SAU40X340S. It matches the 40mm bore, 340mm stroke, 1/4 port, force output and SC-series mounting, but requires upgrading your -S magnet sensors from the old CS1-B/DS1-B to the current CMSG/DMSG/EMSG family.
The 40mm bore features a 1/4 port and M12x1.25 rod thread. Force output is 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, 1130N push at 0.9MPa, and a theoretical maximum of 128kgf at 1.0MPa. Operating speed is 30-800mm/s.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X340S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X340S replacement — usually within 7-8 hours.