This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X45S, 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 SU40X45S
The AirTAC Airtac SU32~50 Standard Cylinder SU40X45S is a double-acting profile-type standard cylinder with a Ø40mm bore and 45mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X45S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke45 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X45S
- 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 SU40X45S
The AirTAC SU40X45S is a discontinued double-acting profile-type cylinder featuring a 40mm bore, 45mm stroke, and a built-in piston magnet. It delivers 628N push force at 0.5MPa through a 1/4" port. AirTAC replaced this legacy unit with the SAU40X45S, a direct upgrade retaining the exact bore, stroke, force, and SC-series mounting footprint.
When migrating to the SAU40X45S, your 16mm rod and 21mm cushions remain identical, but the legacy CS1-B/DS1-B switches must change to the current CMSG/DMSG/EMSG sensor family. The SAU line also introduces the SAUF variant with a built-in 4M solenoid valve, an option the SU series never offered.
Airtac SU32~50 Standard Cylinder SU40X45S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X45S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X45S |
| Bore size | Ø40 mm |
| Stroke | 45 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 SAU40X45S 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 SAU40X45S 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 SU40X45S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×45 | 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 SU40X45S Is Used
Small Parts Clamping
Ideal for holding light machining or welding fixtures, utilizing the 628N push force at 0.5MPa to secure components firmly during automated processing.
Package Diverting
Provides reliable actuation for short-stroke sorting gates on packaging lines, where the 45mm stroke and 32kg vertical lift capacity handle light product routing efficiently.
Bin Push-Off
Deploys smoothly to push small totes or bins from gravity conveyors, taking advantage of the compact profile body to fit within tight transfer station clearances.
Replacing the Airtac SU32~50 Standard Cylinder SU40X45S with the SAU40X45S
To replace the SU40X45S, order the SAU40X45S and confirm the 1/4" port, M12x1.25 rod thread, and SC-series mounting. Because this SKU includes the -S magnet, you must upgrade your position sensing from the old CS1-B/DS1-B switches to the modern CMSG/DMSG/EMSG family. If you need higher force, the 50mm bore provides 982N push at 0.5MPa; if you need less, the 32mm bore offers 402N. Remember that a standard cylinder drifts without live air—the cushion only decelerates near stroke end—so add an external rod lock or pilot-operated check valve for secure load holding. For self-switching needs, consider the new SAUF valve-integrated variant.
Replacement checklist
- ✓ Same bore / stroke → SAU40X45S
- ✓ 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 SU40X45S FAQ
Yes, the AirTAC SU40X45S is discontinued. The direct replacement is the SAU40X45S. It shares the same 40mm bore, 45mm stroke, 628N force, 1/4" port, and SC-series mounting. You simply order the SAU equivalent.
At 0.5MPa it provides 628N push and 528N pull force, 879N push at 0.7MPa, and a theoretical max of 128kgf at 1.0MPa. Because this is an -S magnet model, the legacy CS1-B/DS1-B switches are obsolete; the SAU replacement requires the current CMSG/DMSG/EMSG sensor family.
Request a Quote for the SAU40X45S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X45S replacement — usually within 7-8 hours.