This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X625S, 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 SU40X625S
The AirTAC SU32~50 Standard Cylinder SU40X625S is a double-acting profile-type standard cylinder with a Ø40mm bore and 625mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X625S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke625 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X625S
- 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 SU40X625S
The AirTAC SU40X625S is a discontinued double-acting profile cylinder featuring a 40mm bore and 625mm stroke. Delivering 628 N push force at 0.5 MPa, it uses an extruded aluminum barrel that is shorter and more compact than an ISO 15552 cylinder of the same bore. AirTAC replaced this legacy unit with the SAU40X625S, a direct replacement retaining the exact bore, stroke, 1/4" port, and SC-series mounting.
When upgrading to the SAU40X625S, the body, force, and M12x1.25 rod thread remain unchanged, but the legacy CS1-B/DS1-B sensors on this -S magnet model must transition to the current CMSG/DMSG/EMSG switches. The SAU line also introduces a SAUF variant with a built-in 4M solenoid valve the SU lacked.
Airtac SU32~50 Standard Cylinder SU40X625S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X625S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X625S |
| Bore size | Ø40 mm |
| Stroke | 625 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 SAU40X625S 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 SAU40X625S 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 SU40X625S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×625 | 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 SU40X625S Is Used
Carton Diverting
Uses the 628 N push force at 0.5 MPa to push packages across transfer belts without overwhelming lightweight packaging materials.
Component Ejection
Ejects machined parts from fixtures using the 40mm bore, relying on adjustable 21mm cushions to decelerate the rod at stroke end.
Replacing the Airtac SU32~50 Standard Cylinder SU40X625S with the SAU40X625S
To replace this discontinued SU40X625S, order the SAU40X625S direct equivalent, verifying your 1/4" port thread (PT, G, or NPT) and SC-series mounting accessories. Because the -S magnet is present, prepare to swap legacy CS1-B/DS1-B switches for SAU-compatible CMSG/DMSG/EMSG sensors. If you need higher force, the neighboring 50mm bore provides 982 N push at 0.5 MPa; if less is required, the 32mm bore offers 402 N. For the 625mm stroke, use external guides to prevent rod bending and side-load damage. Note that neither cylinder holds load without live air—the cushions only decelerate—so add an external rod lock or pilot-operated check valve for suspended loads. The SAUF valve-integrated option is available if you need self-switching.
Replacement checklist
- ✓ Same bore / stroke → SAU40X625S
- ✓ 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 SU40X625S FAQ
Yes, the SU40X625S is discontinued. The direct replacement is the AirTAC SAU40X625S. It shares the identical 40mm bore, 625mm stroke, 1/4" port, output force, and SC-series mounting, so it fits the same application directly.
The 40mm bore provides 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, and a 128 kgf maximum at 1.0 MPa. Because this is a -S magnet model, the legacy CS1-B/DS1-B switches are replaced by CMSG/DMSG/EMSG sensors on the SAU upgrade.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X625S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X625S replacement — usually within 7-8 hours.