This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X180, 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 SU40X180
The AirTAC SU32~50 Standard Cylinder SU40X180 is a double-acting profile-type standard cylinder with a Ø40mm bore and 180mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X180, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke180 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X180
- 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 SU40X180
The AirTAC SU40X180 is a discontinued double-acting profile-type cylinder with a 40mm bore and 180mm stroke. Built with an extruded aluminum barrel, it is more compact than an ISO 15552 unit of the same bore and delivers 628 N push force at 0.5 MPa. AirTAC replaced this end-of-line model with the SAU40X180, a direct upgrade retaining the exact 1/4" port, M12x1.25 rod thread, and SC-series mounting footprint.
When upgrading to the SAU40X180, your body dimensions and 21mm adjustable cushions remain unchanged, but you gain compatibility with current CMSG/DMSG/EMSG sensors. This original SU SKU lacks a magnet (-S) and therefore cannot accept any position switch.
Airtac SU32~50 Standard Cylinder SU40X180 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X180 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X180 |
| Bore size | Ø40 mm |
| Stroke | 180 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 SAU40X180 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 SAU40X180 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 SU40X180
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×180 | 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 SU40X180 Is Used
Package Diverting
Pushes lightweight cartons off a sorting line using 628 N thrust at 0.5 MPa, fitting neatly within existing SC-series clevis mounts.
Pallet Stops
Acts as a pneumatic stop for low-inertia pallets, where the 21mm adjustable air cushions absorb the end-of-stroke impact safely.
Clamp Actuation
Provides reliable clamping force for small machined parts, with a compact profile body that saves space in tight cell fixtures.
Replacing the Airtac SU32~50 Standard Cylinder SU40X180 with the SAU40X180
To replace this SU40X180, order the SAU40X180 and confirm your 1/4" port thread (PT, G, or NPT) plus your SC-series mounting hardware (LB, FA, FB, CA, CB, or TC) carry over directly. Because this SKU has no magnet, you cannot mount a sensor; if you need position detection on the new unit, specify an SAU40X180S and migrate to CMSG/DMSG/EMSG switches (the legacy CS1-B/DS1-B will not fit). For loads requiring 879 N at 0.7 MPa, this 40mm bore is adequate, but if you need less force, a 32mm bore provides 402 N; if you need more, step up to a 50mm bore for 982 N. Remember that a standard cylinder drifts on air loss—the cushions only decelerate the stroke end—so fit an external rod lock or pilot-operated check valve for secure load holding. At 180mm stroke, side-load and rod-bending risks are low, but always guide the load to prevent piston binding.
Replacement checklist
- ✓ Same bore / stroke → SAU40X180
- ✓ 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 SU40X180 FAQ
Yes, the AirTAC SU40X180 is discontinued and end-of-life. The direct replacement is the SAU40X180. It shares the same 40mm bore, 180mm stroke, 1/4" port, output force, and SC-series mounting accessories, so it fits the same application without mechanical modifications.
The 40mm bore provides 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, 1130 N at 0.9 MPa, and a theoretical max of 128 kgf at 1.0 MPa. A plain cylinder does not hold a load on air loss—the cushions only decelerate near stroke end—so use an external rod lock or pilot-operated check valve for holding.
Request a Quote for the SAU40X180
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X180 replacement — usually within 7-8 hours.