This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X275, 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 SU40X275
The AirTAC SU32~50 Standard Cylinder SU40X275 is a double-acting profile-type standard cylinder with a Ø40mm bore and 275mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X275, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke275 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X275
- 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 SU40X275
The AirTAC SU40X275 is a discontinued double-acting profile cylinder with a 40 mm bore and 275 mm stroke. Delivering 628 N push force at 0.5 MPa, it features an extruded aluminum barrel and adjustable air cushions at both ends, making it more compact than an ISO 15552 cylinder of the same size. AirTAC replaced this end-of-life unit with the SAU40X275, a direct replacement retaining the exact bore, stroke, output force, 1/4" port, and SC-series mounting.
Because this specific SKU lacks a magnet, it cannot accept a magnetic switch. The SAU upgrade introduces current CMSG/DMSG/EMSG sensors for its -S variants and adds a SAUF built-in 4M solenoid valve option the SU line never had.
Airtac SU32~50 Standard Cylinder SU40X275 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X275 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X275 |
| Bore size | Ø40 mm |
| Stroke | 275 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 SAU40X275 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 SAU40X275 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 SU40X275
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×275 | 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 SU40X275 Is Used
Clamp Actuation
Secures medium-duty workpieces during machining operations, providing reliable 528 N pull force across the 275 mm travel.
Gate Operation
Opens and closes material handling gates, where the compact profile body saves space compared to standard ISO cylinders.
Replacing the Airtac SU32~50 Standard Cylinder SU40X275 with the SAU40X275
To replace this discontinued SU40X275, order the SAU40X275. Verify your 1/4" port thread (PT, G, or NPT), M12x1.25 rod-end thread, and SC-series mounting accessories, as all are unchanged. Since this SKU has no magnet (-S), it cannot support sensing; if your machine requires position detection, specify an SAU40X275S and upgrade to CMSG/DMSG/EMSG switches. For loads needing 879 N at 0.7 MPa, this 40 mm bore is adequate, but if you need less force, a 32 mm bore provides 402 N. At 275 mm stroke, ensure adequate guidance to prevent rod-bending side loads. Note that a standard cylinder drifts on air loss; for load holding, install an external rod lock or pilot-operated check valve, as the cushion only decelerates.
Replacement checklist
- ✓ Same bore / stroke → SAU40X275
- ✓ 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 SU40X275 FAQ
Yes, the AirTAC SU40X275 is discontinued and end-of-life. The direct replacement is the SAU40X275. It shares the identical 40 mm bore, 275 mm stroke, 1/4" port, output force, and SC-series mounting, so it fits the same application without modifications.
The 40 mm bore provides 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, and a maximum theoretical force of 128 kgf at 1.0 MPa. This specific SKU has no magnet, so it cannot accept a sensor. If you need position detection, order the SAU40X275S replacement, which uses current CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B.
Request a Quote for the SAU40X275
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X275 replacement — usually within 7-8 hours.