This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X90S, 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 SU40X90S
The AirTAC Airtac SU32~50 Standard Cylinder SU40X90S is a double-acting profile-type standard cylinder with a Ø40mm bore and 90mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X90S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke90 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X90S
- 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 SU40X90S
The AirTAC SU40X90S is a discontinued double-acting profile-type cylinder with a 40mm bore and 90mm stroke. It delivers 628N push force at 0.5MPa. AirTAC replaced it with the SAU40X90S, a direct upgrade sharing the exact bore, stroke, 1/4" port, and SC-series mounting.
This compact extruded-aluminium body is shorter than an ISO 15552 equivalent. The -S magnet on this legacy unit worked with CS1-B/DS1-B switches, but the SAU replacement uses modern CMSG/DMSG/EMSG sensors.
Airtac SU32~50 Standard Cylinder SU40X90S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X90S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X90S |
| Bore size | Ø40 mm |
| Stroke | 90 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 SAU40X90S 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 SAU40X90S 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 SU40X90S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×90 | 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 SU40X90S Is Used
Small Parts Clamping
Ideal for holding light machining or welding fixtures, using the 628N push force to secure components without crushing them.
Package Diverting
Provides reliable 90mm stroke actuation for routing small cartons on a production line, fitting neatly into tight machinery frames.
Replacing the Airtac SU32~50 Standard Cylinder SU40X90S with the SAU40X90S
To replace this SU40X90S, order the SAU40X90S. Confirm the 1/4" port, M12x1.25 rod thread, and SC-series mounting (LB/FA/FB) match your jig. Because this has an -S magnet, note the sensor family changes from CS1-B/DS1-B to CMSG/DMSG/EMSG. If you need higher force, step up to a 50mm bore (982N push at 0.5MPa); if lower, a 32mm bore gives 402N. The 90mm stroke is under the 1200mm standard max, so no side-load guide is needed. For load holding on air loss, add an external rod lock, as the 21mm cushions only decelerate. The SAU line also offers a SAUF valve-integrated variant if you need self-switching.
Replacement checklist
- ✓ Same bore / stroke → SAU40X90S
- ✓ 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 SU40X90S FAQ
Yes, the SU40X90S is discontinued. The direct replacement is the AirTAC SAU40X90S. It shares the identical 40mm bore, 90mm stroke, 628N force, 1/4" port, and SC-series mounting, so it fits the same application directly.
At 0.5MPa it pushes 628N and pulls 528N; at 0.7MPa it pushes 879N, with a theoretical max of 128kgf at 1.0MPa. Because your SU40X90S has an -S magnet, note that the legacy CS1-B/DS1-B switches are replaced by CMSG/DMSG/EMSG sensors on the SAU.
Request a Quote for the SAU40X90S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X90S replacement — usually within 7-8 hours.