This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X115, 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 SU40X115
The AirTAC SU32~50 Standard Cylinder SU40X115 is a double-acting profile-type standard cylinder with a Ø40mm bore and 115mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X115, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke115 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X115
- 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 SU40X115
The AirTAC SU40X115 is a discontinued double-acting profile-type cylinder with a 40mm bore and 115mm stroke. Delivering 628N push force at 0.5MPa via a 1/4" port, it is replaced by the SAU40X115 direct upgrade. This extruded aluminium body shares identical SC-series mounting, maintaining a shorter, compact footprint.
Because this SKU lacks a magnet (-S), it cannot accept a sensor; furthermore, the SAU upgrade switches to current CMSG/DMSG/EMSG switches if you add one. Note the air cushion only decelerates; it will not hold a load without live air.
Airtac SU32~50 Standard Cylinder SU40X115 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X115 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X115 |
| Bore size | Ø40 mm |
| Stroke | 115 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 SAU40X115 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 SAU40X115 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 SU40X115
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×115 | 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 SU40X115 Is Used
Package Diverting
Pushes light cartons off a belt line using the 628N push force at 0.5MPa, fitting neatly into tight conveyor frames.
Pallet Stopper Gate
Acts as a compact 40mm bore stopper for low-profile pallets, retracting quickly at 30-800mm/s to release workflow.
Small Press Ejector
Ejects lightweight stamped parts from a die, utilising the 528N pull force and 21mm adjustable cushions to prevent end-impact.
Replacing the Airtac SU32~50 Standard Cylinder SU40X115 with the SAU40X115
To replace this discontinued SU40X115, order the SAU40X115. Verify your 1/4" port, M12x1.25 rod thread, and SC-series mounting (LB/FA/FB/CA/CB) for a direct. This non-magnetic SKU cannot take a switch; if sensing is needed, order an SAU-S and use CMSG/DMSG/EMSG sensors (the SU used legacy CS1-B/DS1-B). For loads needing 879N at 0.7MPa, step up to a 50mm bore; for lighter tasks, a 32mm bore gives 402N. The cushion only decelerates, so add an external rod lock or pilot-operated check valve to hold loads. The SAUF variant adds a built-in valve the SU lacked. At 115mm stroke, side-load risk is low, but ensure straight alignment.
Replacement checklist
- ✓ Same bore / stroke → SAU40X115
- ✓ 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 SU40X115 FAQ
Yes, the SU40X115 is discontinued. The direct replacement is the AirTAC SAU40X115. It shares the same 40mm bore, 115mm stroke, 628N push force, 1/4" port, and SC-series mounting accessories, fitting the exact same application.
It delivers 628N push and 528N pull at 0.5MPa, 879N at 0.7MPa, and a theoretical max of 128kgf at 1.0MPa. This specific SKU has no magnet (-S), so it cannot accept a sensor. If you need sensing, the SAU replacement requires CMSG/DMSG/EMSG switches (the SU used legacy CS1-B/DS1-B).
Request a Quote for the SAU40X115
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X115 replacement — usually within 7-8 hours.