This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X40S, 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 SU40X40S
The AirTAC Airtac SU32~50 Standard Cylinder SU40X40S is a double-acting profile-type standard cylinder with a Ø40mm bore and 40mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X40S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke40 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X40S
- 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 SU40X40S
The AirTAC SU40X40S is a discontinued double-acting profile-type cylinder. It delivers 628 N push force at 0.5 MPa through a 16 mm rod. AirTAC replaced it with the SAU40X40S, a direct alternative retaining the 40 mm bore, 40 mm stroke, 1/4" port, and SC-series mounting.
This compact extruded-aluminium body is shorter than an ISO 15552 unit. The built-in magnet (-S) works with legacy CS1-B/DS1-B switches, whereas the SAU replacement uses CMSG/DMSG/EMSG sensors.
Airtac SU32~50 Standard Cylinder SU40X40S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X40S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X40S |
| Bore size | Ø40 mm |
| Stroke | 40 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 SAU40X40S 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 SAU40X40S 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 SU40X40S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 SU40X40S Is Used
Small Part Clamping
Ideal for securing light electronics or plastic housings during machining, utilizing the 628 N push force at 0.5 MPa for firm, stable holding.
Package Diverting
Short 40 mm stroke perfectly suited for actuating small pusher arms to redirect lightweight cartons on a high-speed packaging line.
Bin Gate Control
Provides reliable actuation for small hopper or bin gates in material handling, dispensing granular goods with precise 40 mm travel.
Replacing the Airtac SU32~50 Standard Cylinder SU40X40S with the SAU40X40S
To replace this SU40X40S, order the SAU40X40S. Verify your 1/4" port, M12x1.25 rod thread, and SC-series mount. Because this SKU has a magnet (-S), note the sensor family changes from CS1-B/DS1-B to CMSG/DMSG/EMSG. If you need higher force, the 50 mm bore yields 982 N push at 0.5 MPa; if lower, the 32 mm bore gives 402 N. For load holding on air loss, add an external rod lock or pilot-operated check valve, as cushions only decelerate. The SAUF variant adds a built-in valve the SU lacked. With a 40 mm stroke, side-load risks are minimal.
Replacement checklist
- ✓ Same bore / stroke → SAU40X40S
- ✓ 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 SU40X40S FAQ
Yes, the SU40X40S is discontinued. The direct replacement is the AirTAC SAU40X40S. It shares the exact same 40 mm bore, 40 mm stroke, 628 N output force, 1/4" port, and SC-series mounting accessories, so it fits the same application.
At 0.5 MPa it provides 628 N push and 528 N pull; 879 N push at 0.7 MPa; 1130 N at 0.9 MPa; with a 128 kgf max at 1.0 MPa. The -S suffix denotes a piston magnet for legacy CS1-B/DS1-B switches; the SAU replacement upgrades these to CMSG/DMSG/EMSG sensors.
Request a Quote for the SAU40X40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X40S replacement — usually within 7-8 hours.