This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X500S, 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 SU40X500S
The AirTAC SU32~50 Standard Cylinder SU40X500S is a double-acting profile-type standard cylinder with a Ø40mm bore and 500mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X500S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke500 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X500S
- 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 SU40X500S
The AirTAC SU40X500S is a discontinued double-acting profile-type cylinder with a 40 mm bore and 500 mm stroke. It delivers 628 N push force at 0.5 MPa through a 1/4" port. AirTAC replaced this unit with the SAU40X500S, a direct replacement retaining the exact bore, stroke, output force, and SC-series mounting footprint.
The SAU upgrade switches the -S magnet compatibility from legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors, and introduces the SAUF built-in-valve variant the SU line lacked.
Airtac SU32~50 Standard Cylinder SU40X500S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X500S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X500S |
| Bore size | Ø40 mm |
| Stroke | 500 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 SAU40X500S 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 SAU40X500S 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 SU40X500S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×500 | 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 SU40X500S Is Used
Long-Stroke Diversion
Pushes packages across a 500 mm transfer gap with a safe 377 N working load, utilizing the adjustable 21 mm cushions to stop smoothly.
Component Ejection
Cycles parts out of a machining zone at 30-800 mm/s, requiring external guide rails to prevent rod bending over the long stroke.
Replacing the Airtac SU32~50 Standard Cylinder SU40X500S with the SAU40X500S
To replace the SU40X500S, order the SAU40X500S and confirm the 1/4" port, M12x1.25 rod thread, and SC-series mounting. Because the -S magnet is present, note that your legacy CS1-B/DS1-B switches must change to CMSG/DMSG/EMSG sensors on the SAU. If you need integrated flow control, the SAUF variant adds a built-in 4M solenoid valve the original SU lacked. For a 500 mm stroke, use an external guide to prevent rod bending and side-load wear. If dropping to a 32 mm bore yields too little force, step up to a 50 mm bore (982 N push @0.5 MPa). A plain cylinder drifts on air loss—the cushion only decelerates—so add an external rod lock or pilot-operated check valve for load holding.
Replacement checklist
- ✓ Same bore / stroke → SAU40X500S
- ✓ 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 SU40X500S FAQ
Yes, the SU40X500S is discontinued. The direct replacement is the SAU40X500S. It matches the 40 mm bore, 500 mm stroke, 1/4" port, and SC-series mounting. The SAU body is identical, but the -S magnet now requires CMSG/DMSG/EMSG sensors instead of the old CS1-B/DS1-B switches.
The 40 mm bore uses a 1/4" port with an M12x1.25 rod thread. At 0.5 MPa it provides 628 N push and 528 N pull force. At 0.7 MPa push is 879 N, and at 0.9 MPa it is 1130 N. The theoretical maximum force is 128 kgf at 1.0 MPa.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X500S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X500S replacement — usually within 7-8 hours.