This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X30S, 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 SU40X30S
The AirTAC Airtac SU32~50 Standard Cylinder SU40X30S is a double-acting profile-type standard cylinder with a Ø40mm bore and 30mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X30S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke30 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X30S
- 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 SU40X30S
The AirTAC SU40X30S is a discontinued double-acting profile cylinder with a 40mm bore and 30mm stroke. Delivering 628 N push force at 0.5 MPa, it is replaced by the SAU40X30S direct equivalent. The SAU matches the original 1/4" port, M12x1.25 rod thread, and SC-series mounting. The extruded aluminum body is more compact than an ISO 15552 cylinder of the same bore.
The -S magnet on this legacy unit worked with CS1-B/DS1-B switches; the SAU replacement upgrades to CMSG/DMSG/EMSG sensors. The SAU line also adds a SAUF built-in valve option the SU lacked. A plain cylinder drifts without live air, so use an external rod lock for load holding.
Airtac SU32~50 Standard Cylinder SU40X30S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X30S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X30S |
| Bore size | Ø40 mm |
| Stroke | 30 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 SAU40X30S 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 SAU40X30S 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 SU40X30S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 SU40X30S Is Used
Short-Stroke Clamping
Ideal for holding small parts during machining, using the 628 N push force at 0.5 MPa to secure workpieces firmly within a compact 30mm travel.
Package Diverting
Provides rapid 30mm actuation to push small cartons off a conveyor belt, taking advantage of the 30-800 mm/s speed range and 528 N pull force.
Ejector Mechanism
Delivers fast ejection of lightweight components from assembly stations, where the short 30mm stroke and profile body save valuable machine space.
Replacing the Airtac SU32~50 Standard Cylinder SU40X30S with the SAU40X30S
To replace this SU40X30S, order the SAU40X30S keeping the 40mm bore, 30mm stroke, 1/4" port, and SC mounting. Because this is an -S model, note the sensor family changes from CS1-B/DS1-B to CMSG/DMSG/EMSG. If you need less force, a 32mm bore offers 402 N push at 0.5 MPa; for more force, a 50mm bore provides 982 N. The 30mm stroke is very short so side-load risk is minimal, but always guide the load. The air cushion only decelerates the piston; it does not hold the load on air loss, so add a pilot-operated check valve if needed. The SAUF variant offers a built-in 4M solenoid valve if you need self-switching.
Replacement checklist
- ✓ Same bore / stroke → SAU40X30S
- ✓ 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 SU40X30S FAQ
Yes, the AirTAC SU40X30S is discontinued and end-of-life. The direct replacement is the SAU40X30S. It shares the same 40mm bore, 30mm stroke, 628 N push force at 0.5 MPa, 1/4" port, and SC-series mounting accessories. You can order the SAU40X30S as a direct fit.
The cylinder provides 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, 1130 N push at 0.9 MPa, and a theoretical max of 128 kgf at 1.0 MPa. Because your SU40X30S has a magnet (-S), note that the legacy CS1-B/DS1-B switches are replaced by current CMSG/DMSG/EMSG sensors on the SAU model.
Request a Quote for the SAU40X30S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X30S replacement — usually within 7-8 hours.