This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X350SN, 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 SU40X350SN
The AirTAC SU32~50 Standard Cylinder SU40X350SN 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 SAU40X350SN, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke350 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X350SN
- 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 SU40X350SN
The AirTAC SU40X350SN is a discontinued double-acting profile-type cylinder with a 40mm bore and 350mm stroke. Delivering 628 N push and 528 N pull at 0.5 MPa, it is superseded by the SAU40X350SN direct replacement. The SAU maintains the exact 1/4" port, M12x1.25 rod thread, and SC-series mounting, ensuring a seamless swap.
This unit features an NBR seal (-N) for -20 to +70 C operation, and a piston magnet (-S) for legacy CS1-B/DS1-B switches. The SAU upgrade transitions to CMSG/DMSG/EMSG sensors and introduces the SAUF built-in valve option. At 350mm, external guides are advised to prevent rod bending.
Airtac SU32~50 Standard Cylinder SU40X350SN Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X350SN |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X350SN |
| 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 SAU40X350SN 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 SAU40X350SN 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 SU40X350SN
| 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 SU40X350SN Is Used
Package Diverting
Pushes cartons at 90 degrees on sorting lines using the 628 N push force, with the 350mm stroke clearing adjacent conveyor lanes.
Pallet Stopper Gate
Acts as a pneumatic stop for inbound pallets, absorbing kinetic energy via the 21mm adjustable cushion before unloading.
Replacing the Airtac SU32~50 Standard Cylinder SU40X350SN with the SAU40X350SN
To replace this discontinued SU40X350SN, order the SAU40X350SN. Verify your 1/4" port, M12x1.25 rod thread, and SC-series mounts, which all carry over directly. Because this SKU includes a magnet (-S), note that your legacy CS1-B/DS1-B switches must change to CMSG/DMSG/EMSG sensors on the SAU. If checking neighbouring bores, a 32mm bore provides 402 N push at 0.5 MPa, while a 50mm bore offers 982 N. For the 350mm stroke, add external guides to prevent rod bending under side loads. The cylinder does not hold load without live air; use an external rod lock or pilot-operated check valve for safety. The SAUF variant offers a built-in valve if needed.
Replacement checklist
- ✓ Same bore / stroke → SAU40X350SN
- ✓ 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 SU40X350SN FAQ
Yes, the SU40X350SN is discontinued. The direct replacement is the SAU40X350SN. It matches the 40mm bore, 350mm stroke, 1/4" port, output force, and SC-series mounting accessories, so it fits the same application.
It delivers 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. The -S suffix means it has a magnet for legacy CS1-B/DS1-B switches; when upgrading to the SAU replacement, you must switch to CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X350SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X350SN replacement — usually within 7-8 hours.