This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X350S, 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 SU40X350S
The AirTAC SU32~50 Standard Cylinder SU40X350S 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 SAU40X350S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke350 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X350S
- 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 SU40X350S
The AirTAC SU40X350S 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 through a 1/4-inch port. AirTAC replaced this unit with the SAU40X350S direct replacement, matching the exact body, force, and SC-series mounting accessories.
The SAU upgrade switches the magnet sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches, and introduces the SAUF built-in-valve option. The extruded aluminum profile is more compact than an ISO 15552 cylinder of the same bore.
Airtac SU32~50 Standard Cylinder SU40X350S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X350S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X350S |
| 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 SAU40X350S 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 SAU40X350S 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 SU40X350S
| 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 SU40X350S Is Used
Package Diverting
Pushes medium-weight cartons off a sorting line using 628N of thrust, with the 350mm stroke clearing adjacent lane traffic.
Component Ejection
Ejects machined aluminum parts from a fixture, utilizing the compact profile body to fit tight machine envelopes.
Replacing the Airtac SU32~50 Standard Cylinder SU40X350S with the SAU40X350S
To replace this discontinued SU40X350S, order the SAU40X350S keeping the 40mm bore, 350mm stroke, M12x1.25 rod thread, 1/4-inch port, and SC-series mounting. Because this SKU has the -S magnet, you must upgrade your sensors: the old CS1-B/DS1-B switches will not fit, so use CMSG/DMSG/EMSG sensors on the SAU. If you need a neighboring bore, a 32mm bore yields 402N push while a 50mm bore yields 982N push at 0.5MPa. The 350mm stroke requires an external guide to prevent rod bending under side loads. For load holding during air loss, add an external rod lock or pilot-operated check valve, as the 21mm adjustable cushion only decelerates and cannot lock the piston. If self-switching is needed, explore the SAUF variant with its built-in 4M solenoid valve.
Replacement checklist
- ✓ Same bore / stroke → SAU40X350S
- ✓ 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 SU40X350S FAQ
Yes, the AirTAC SU40X350S is discontinued. The direct replacement is the SAU40X350S. It provides the same 40mm bore, 350mm stroke, 628N push force at 0.5MPa, 1/4-inch port, and SC-series mounting compatibility.
The 40mm bore provides 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, and a 128kgf theoretical max at 1.0MPa. Because this is an -S magnet model, the old CS1-B/DS1-B switches are obsolete; the SAU replacement requires CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X350S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X350S replacement — usually within 7-8 hours.