This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X370S, 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 SU40X370S
The AirTAC SU32~50 Standard Cylinder SU40X370S is a double-acting profile-type standard cylinder with a Ø40mm bore and 370mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X370S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke370 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X370S
- 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 SU40X370S
The AirTAC SU40X370S is a discontinued double-acting profile-type cylinder with a 40mm bore and 370mm stroke. It delivered 628 N push force at 0.5 MPa through a 1/4" port. AirTAC replaced this EOL unit with the SAU40X370S, a direct upgrade retaining the exact bore, stroke, force, port size, and SC-series mounting footprint.
The SAU upgrade introduces CMSG/DMSG/EMSG sensors, replacing the legacy CS1-B/DS1-B switches used on this -S magnet model. Note that standard cylinders drift without live air; the cushions only decelerate, so add an external rod lock for holding.
Airtac SU32~50 Standard Cylinder SU40X370S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X370S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X370S |
| Bore size | Ø40 mm |
| Stroke | 370 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 SAU40X370S 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 SAU40X370S 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 SU40X370S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×370 | 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 SU40X370S Is Used
Package Diverting
Pushes light-to-medium cartons at 30-800 mm/s across sorting lines, utilizing the 628 N push force effectively.
Component Ejection
Ejects machined parts from fixtures, where the 21mm adjustable cushions ensure soft, impact-free end stops.
Replacing the Airtac SU32~50 Standard Cylinder SU40X370S with the SAU40X370S
To replace this SU40X370S, order the SAU40X370S. Verify your 1/4" port thread (PT, G, or NPT) and SC-series mounting (LB, FA, FB, CA, CB, TC). Because this is an -S magnet model, you must switch your legacy CS1-B/DS1-B switches to the current CMSG/DMSG/EMSG family. The 370mm stroke exceeds 300mm, so use external guides to prevent rod bending under side loads. If you need higher force, the 50mm bore offers 982 N push at 0.5 MPa; if lower, the 32mm bore provides 402 N. For load holding on air loss, add a pilot-operated check valve or external rod lock, as the cushion only decelerates. The SAUF variant adds a built-in 4M solenoid valve if you need self-switching.
Replacement checklist
- ✓ Same bore / stroke → SAU40X370S
- ✓ 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 SU40X370S FAQ
Yes, the AirTAC SU40X370S is discontinued. The direct replacement is the SAU40X370S. It shares the same 40mm bore, 370mm stroke, 628 N force at 0.5 MPa, 1/4" port, and SC-series mounting accessories, fitting directly into your existing application.
The bore 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. Because this is an -S model with a magnet, the legacy CS1-B/DS1-B switches must be upgraded to CMSG/DMSG/EMSG sensors on the new SAU replacement.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X370S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X370S replacement — usually within 7-8 hours.