This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X115S, 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 SU40X115S
The AirTAC SU32~50 Standard Cylinder SU40X115S 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 SAU40X115S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke115 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X115S
- 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 SU40X115S
The AirTAC SU40X115S is a discontinued double-acting profile-type cylinder with a 40 mm bore and 115 mm stroke. It delivers 628 N push force at 0.5 MPa. AirTAC replaced this unit with the SAU40X115S, a direct alternative retaining the exact same 1/4" port, M12x1.25 rod thread, 21 mm cushions and SC-series mounting.
This extruded aluminium body is shorter than an ISO 15552 cylinder of the same bore. Note the -S magnet on this legacy unit works with CS1-B/DS1-B switches, whereas the SAU replacement uses CMSG/DMSG/EMSG sensors and adds a SAUF built-in-valve option.
Airtac SU32~50 Standard Cylinder SU40X115S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X115S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X115S |
| 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 SAU40X115S 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 SAU40X115S 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 SU40X115S
| 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 SU40X115S Is Used
Small Part Clamping
Ideal for securing 40 mm bore components during machining, delivering 628 N of clamping push at 0.5 MPa.
Package Diverting
Provides reliable 115 mm stroke actuation to push lightweight cartons off a production line at up to 800 mm/s.
Material Ejection
Generates enough force to eject finished goods from compact machinery without needing an ISO 15552 footprint.
Replacing the Airtac SU32~50 Standard Cylinder SU40X115S with the SAU40X115S
To replace this SU40X115S, order the SAU40X115S. Confirm the 1/4" port (PT/G/NPT) and SC-series mounting (LB/FA/FB/CA/CB) match your jig. Because this SKU has the -S magnet, you must upgrade your sensors: the legacy CS1-B/DS1-B switches will not fit the SAU, so switch to CMSG/DMSG/EMSG. If you need a self-switching action, explore the SAUF variant with its built-in 4M solenoid valve. A plain cylinder drifts without live air, so use an external rod lock or pilot-operated check valve for held loads. At 115 mm stroke, side-load is minimal, but if scaling up, always guide the rod to prevent bending.
Replacement checklist
- ✓ Same bore / stroke → SAU40X115S
- ✓ 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 SU40X115S FAQ
Yes, the SU40X115S is end-of-life. The direct replacement is the AirTAC SAU40X115S. It shares the identical 40 mm bore, 115 mm stroke, 628 N force, 1/4" port and SC-series mounting, so it drops straight into the same application.
The bore 40 cylinder provides 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, and a theoretical max of 128 kgf at 1.0 MPa. Because this is an -S magnet model, it used legacy CS1-B/DS1-B switches; the SAU replacement requires CMSG/DMSG/EMSG sensors instead.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X115S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X115S replacement — usually within 7-8 hours.