This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X334S, 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 SU40X334S
The AirTAC SU32~50 Standard Cylinder SU40X334S is a double-acting profile-type standard cylinder with a Ø40mm bore and 334mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X334S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke334 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X334S
- 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 SU40X334S
The AirTAC SU40X334S is a discontinued double-acting profile-type cylinder with a 40mm bore and 334mm stroke. Built with an extruded aluminum barrel, it is shorter and more compact than an ISO 15552 unit of the same bore. AirTAC's direct replacement is the SAU40X334S, preserving the exact bore, stroke, 1/4" port, and SC-series mounting.
Because this SKU includes the -S magnet, it originally used legacy CS1-B/DS1-B reed switches. When upgrading to the SAU40X334S, you must switch to the current CMSG/DMSG/EMSG sensor family. The SAU line also introduces the SAUF variant with a built-in 4M solenoid valve, a self-switching option the SU series never offered. Note that a plain cylinder does not hold load on air loss; the 21mm adjustable cushions only decelerate near stroke end, so use an external rod lock for vertical holding.
Airtac SU32~50 Standard Cylinder SU40X334S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X334S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X334S |
| Bore size | Ø40 mm |
| Stroke | 334 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 SAU40X334S 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 SAU40X334S 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 SU40X334S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×334 | 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 SU40X334S Is Used
Compact Clamping
Secures aluminum extrusions in a tight machining cell where the shorter profile body saves space compared to standard ISO cylinders.
Replacing the Airtac SU32~50 Standard Cylinder SU40X334S with the SAU40X334S
To replace the discontinued SU40X334S, order the SAU40X334S direct equivalent, verifying your 1/4" port thread (PT, G, or NPT), M12x1.25 rod-end thread, and SC-series mounting (LB, FA, FB, CA, CB, TC). If your machine relied on the -S magnet, remember the SAU uses CMSG/DMSG/EMSG sensors instead of the older CS1-B/DS1-B switches. For sizing alternatives, a 32mm bore provides 402 N push at 0.5 MPa, while a 50mm bore increases output to 982 N. Given the 334mm stroke, prevent rod bending by guiding the load externally to avoid side-load forces. If you need true load holding on air loss, add a pilot-operated check valve or external rod lock, as the cushions only decelerate. For faster cycling without external valves, consider the SAUF built-in-valve variant.
Replacement checklist
- ✓ Same bore / stroke → SAU40X334S
- ✓ 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 SU40X334S FAQ
Yes, the AirTAC SU40X334S is discontinued and end-of-life. The direct replacement is the SAU40X334S. It matches the 40mm bore, 334mm stroke, 1/4" port, output force, and SC-series mounting accessories, so it fits the same application directly.
The SAU40X334S 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. If upgrading from the -S magnet model, the legacy CS1-B/DS1-B switches are replaced by the current CMSG/DMSG/EMSG sensor family.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X334S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X334S replacement — usually within 7-8 hours.