This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X290, 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 SU40X290
The AirTAC SU32~50 Standard Cylinder SU40X290 is a double-acting profile-type standard cylinder with a Ø40mm bore and 290mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X290, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke290 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X290
- 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 SU40X290
The AirTAC SU40X290 is a discontinued double-acting profile-type cylinder with a 40mm bore and 290mm stroke. It delivers 628N push force at 0.5MPa through a 1/4" port. AirTAC replaced this legacy unit with the SAU40X290, a direct upgrade retaining the exact bore, stroke, force, port size and SC-series mounting.
The SAU upgrade introduces CMSG/DMSG/EMSG sensors and a SAUF built-in-valve variant the SU lacked. This SKU has no magnet, so it cannot accept a sensor switch.
Airtac SU32~50 Standard Cylinder SU40X290 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X290 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X290 |
| Bore size | Ø40 mm |
| Stroke | 290 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 SAU40X290 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 SAU40X290 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 SU40X290
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×290 | 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 SU40X290 Is Used
Package Diverting
Pushes medium-weight cartons off a sorting line using the 628N push force at 0.5MPa, with the 290mm stroke clearing the conveyor width.
Pallet Stop Gate
Acts as a pneumatic stop for pallets entering a wrap station, handling the impact via adjustable 21mm air cushions at both ends.
Component Clamping
Secures aluminium extrusions during machining operations, providing a firm 528N pull force at 0.5MPa without marking the workpiece.
Replacing the Airtac SU32~50 Standard Cylinder SU40X290 with the SAU40X290
To replace this SU40X290, order the SAU40X290. Confirm the 1/4" port, M12x1.25 rod thread and SC-series mounting (LB/FA/FB/CA/CB) match your jig. Since this SKU lacks a magnet (-S), it cannot accept a sensor; if sensing is needed, order an SAU40X290S and use the current CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B. For higher loads, the 50mm bore offers 982N push at 0.5MPa; for tighter spaces, the 32mm bore provides 402N. At 290mm stroke, use a guide to prevent rod bending and side-load wear. The cylinder will not hold a load on air loss—the 21mm cushion only decelerates—so add an external rod lock or pilot-operated check valve for vertical holding. The SAUF valve-integrated option is available if you need self-switching.
Replacement checklist
- ✓ Same bore / stroke → SAU40X290
- ✓ 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 SU40X290 FAQ
Yes, the SU40X290 is discontinued. The direct replacement is the AirTAC SAU40X290. It shares the same 40mm bore, 290mm stroke, 1/4" port, output force and SC-series mounting, so it fits the same application without mechanical changes.
The 40mm bore provides 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, and a theoretical max of 128kgf at 1.0MPa. This specific SKU has no magnet, meaning it cannot accept a sensor switch. If you need position sensing, the SAU40X290S replacement uses current CMSG/DMSG/EMSG switches.
Request a Quote for the SAU40X290
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X290 replacement — usually within 7-8 hours.