This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X350, 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 SU40X350
The AirTAC SU32~50 Standard Cylinder SU40X350 is a double-acting profile-type standard cylinder with a Ø40mm bore and 350mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X350, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke350 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X350
- 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 SU40X350
The AirTAC SU40X350 is a discontinued double-acting profile-type cylinder with a 40mm bore and 350mm stroke. It delivers 628N push and 528N pull at 0.5MPa, using a 1/4" port and M12x1.25 rod thread. AirTAC replaced this unit with the SAU40X350, a direct upgrade retaining the exact body dimensions, force, and SC-series mounting.
Because this SKU lacks a magnet, it cannot accept a sensor. The SAU replacement adds modern CMSG/DMSG/EMSG switch compatibility and an optional SAUF built-in valve. The 350mm stroke requires external guides to prevent rod bending under side loads.
Airtac SU32~50 Standard Cylinder SU40X350 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X350 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X350 |
| Bore size | Ø40 mm |
| Stroke | 350 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 SAU40X350 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 SAU40X350 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 SU40X350
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×350 | 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 SU40X350 Is Used
Package Diverting
Pushes cartons at 90 degrees on a sorting line with a safe 377N working load, utilizing the 350mm stroke to clear the belt path.
Pallet Stopper Gate
Acts as an indexing stop for lightweight pallets, though external guides are mandatory to absorb pallet impact over the long 350mm extension.
Component Ejector
Ejects machined parts from a fixture, taking advantage of the adjustable 21mm cushions to decelerate the 16mm rod smoothly at cycle end.
Replacing the Airtac SU32~50 Standard Cylinder SU40X350 with the SAU40X350
To replace this discontinued SU40X350, order the SAU40X350. Verify your 1/4" port, M12x1.25 thread, and SC-series mounts (LB/FA/FB/CA/CB), which carry over directly. Since this specific SKU has no magnet, you cannot mount a sensor; if sensing is needed, specify an SAU40X350-S and upgrade to CMSG/DMSG/EMSG switches (the SU used legacy CS1-B/DS1-B). For the 350mm stroke, add external guides to prevent rod bending. A plain cylinder drifts on air loss, so use a pilot-operated check valve or rod lock for load holding. If you need more force, the 50mm bore yields 982N push at 0.5MPa; if less is acceptable, the 32mm bore provides 402N. The SAUF variant integrates a 4M valve if you want to simplify piping.
Replacement checklist
- ✓ Same bore / stroke → SAU40X350
- ✓ 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 SU40X350 FAQ
Yes, the SU40X350 is discontinued. The direct replacement is the AirTAC SAU40X350. It matches the 40mm bore, 350mm stroke, 628N push force at 0.5MPa, 1/4" port, and SC-series mounting accessories.
It provides 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, and a 128kgf maximum at 1.0MPa. Because this specific SKU lacks the -S magnet, it cannot accept sensors; the SAU-S replacement uses CMSG/DMSG/EMSG switches.
Request a Quote for the SAU40X350
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X350 replacement — usually within 7-8 hours.