This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X30, 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 SU40X30
The AirTAC Airtac SU32~50 Standard Cylinder SU40X30 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 SAU40X30, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke30 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X30
- 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 SU40X30
The AirTAC SU40X30 is a discontinued double-acting profile-type cylinder with a 40mm bore and 30mm stroke. It delivers 628N push and 528N pull at 0.5MPa, utilizing a 1/4" port and a 16mm piston rod. AirTAC replaced this unit with the SAU40X30, a direct upgrade retaining the exact bore, stroke, output force, port size, and SC-series mounting compatibility.
Because this SKU lacks a magnet, it cannot accept a position sensor. The SAU upgrade introduces modern CMSG/DMSG/EMSG switch compatibility for magnetized variants, plus a new SAUF built-in-valve option.
Airtac SU32~50 Standard Cylinder SU40X30 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X30 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X30 |
| 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 SAU40X30 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 SAU40X30 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 SU40X30
| 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 SU40X30 Is Used
Short-Stroke Clamping
Ideal for holding lightweight aluminum extrusions or plastic housings during machining, using the 628N push force at 0.5MPa for firm, stable grip.
Package Diverting
Provides rapid 30mm actuation to push small cartons off a sorting line, operating efficiently at speeds between 30-800mm/s.
Replacing the Airtac SU32~50 Standard Cylinder SU40X30 with the SAU40X30
To replace the SU40X30, order the SAU40X30. Verify your 1/4" port thread (PT, G, or NPT), M12x1.25 rod-end thread, and SC-series mounting (LB, FA, FB, CA, CB, TC). Since this specific SKU has no magnet (-S), it cannot support legacy CS1-B/DS1-B switches; if sensing is needed, specify an SAU40X30S and use current CMSG/DMSG/EMSG sensors. If you need higher force, the 50mm bore offers 982N push at 0.5MPa; for tighter spaces, the 32mm bore provides 402N. Note that a standard cylinder drifts without live air—the 21mm cushions only decelerate—so add an external rod lock or pilot-operated check valve for load holding. The SAUF variant integrates a 4M solenoid valve if you need self-switching.
Replacement checklist
- ✓ Same bore / stroke → SAU40X30
- ✓ 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 SU40X30 FAQ
Yes, the SU40X30 is discontinued. The direct replacement is the AirTAC SAU40X30. It matches the 40mm bore, 30mm stroke, 1/4" port, 628N push force at 0.5MPa, and SC-series mounting, so no mechanical changes are needed.
At 0.5MPa it pushes 628N and pulls 528N; at 0.7MPa it pushes 879N, with a theoretical max of 128kgf at 1.0MPa. It cannot hold a load if air is lost—the adjustable 21mm cushions only decelerate near stroke end. Use an external rod lock or pilot-operated check valve for secure load holding.
Request a Quote for the SAU40X30
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X30 replacement — usually within 7-8 hours.