This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X545S, 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 SU40X545S
The AirTAC Airtac SU32~50 Standard Cylinder SU40X545S is a double-acting profile-type standard cylinder with a Ø40mm bore and 545mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X545S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke545 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X545S
- 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 SU40X545S
The AirTAC SU40X545S is a discontinued double-acting profile-type cylinder with a 40 mm bore, 545 mm stroke, and a 1/4" port. Delivering 628 N push force at 0.5 MPa, it is replaced directly by the SAU40X545S. This direct successor retains the exact bore, stroke, output force, port size, and SC-series mounting, ensuring a seamless retrofit without bracket changes.
The extruded aluminum profile is more compact than a same-bore ISO 15552 unit. For this 545 mm stroke, use external guides to prevent rod bending under side loads. The -S magnet on this legacy unit works with CS1-B/DS1-B switches, but the SAU replacement requires CMSG/DMSG/EMSG sensors. The SAU family also adds a SAUF valve-integrated option the SU lacked.
Airtac SU32~50 Standard Cylinder SU40X545S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X545S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X545S |
| Bore size | Ø40 mm |
| Stroke | 545 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 SAU40X545S 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 SAU40X545S 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 SU40X545S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×545 | 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 SU40X545S Is Used
Package Diverting
Pushes cartons at 30-800 mm/s along sorting lines, using the 545 mm stroke to clear adjacent lanes while the compact profile saves machine footprint.
Long-Reach Ejection
Ejects molded parts from deep press beds, requiring external guide rails to prevent rod bending over the 545 mm extension.
Replacing the Airtac SU32~50 Standard Cylinder SU40X545S with the SAU40X545S
To replace this SU40X545S, order the SAU40X545S. Verify your 1/4" port threads (PT, G, or NPT) and SC-series mounting brackets (LB, FA, FB, CA, CB, TC). Because the -S magnet is present, note that your legacy CS1-B/DS1-B switches must change to CMSG/DMSG/EMSG sensors on the new SAU. If sizing alternatives, a 32 mm bore yields 402 N push at 0.5 MPa, while a 50 mm bore yields 982 N. For this 545 mm stroke, external guides are essential to avoid rod-bending side loads. The cushion only decelerates the piston; it does not hold load on air loss, so add an external rod lock or pilot-operated check valve for suspended loads. If you need self-switching, explore the SAUF variant with its built-in 4M solenoid valve.
Replacement checklist
- ✓ Same bore / stroke → SAU40X545S
- ✓ 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 SU40X545S FAQ
Yes, the SU40X545S is discontinued. The direct replacement is the SAU40X545S. It shares the identical 40 mm bore, 545 mm stroke, 628 N force at 0.5 MPa, 1/4" port, and SC-series mounting, so no mechanical redesign is needed.
The 40 mm 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 SU40X545S has a -S magnet, it used legacy CS1-B/DS1-B switches; the SAU40X545S replacement requires the newer CMSG/DMSG/EMSG sensor family.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X545S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X545S replacement — usually within 7-8 hours.