This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X44, 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 SU40X44
The AirTAC Airtac SU32~50 Standard Cylinder SU40X44 is a double-acting profile-type standard cylinder with a Ø40mm bore and 44mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X44, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke44 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X44
- 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 SU40X44
The AirTAC SU40X44 is a discontinued double-acting profile-type cylinder with a 40mm bore and 44mm stroke. It delivers 628 N push force at 0.5 MPa via a 1/4" port. AirTAC replaced this legacy unit with the SAU40X44 direct replacement, matching the exact bore, stroke, output force, and SC-series mounting footprint.
This nonstandard 44mm stroke SKU lacks a magnet, meaning it cannot accept a magnetic switch. The SAU upgrade retains the compact extruded aluminum body—shorter than an ISO 15552 cylinder of the same bore—while modernizing the sensor groove for CMSG/DMSG/EMSG switches.
Airtac SU32~50 Standard Cylinder SU40X44 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X44 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X44 |
| Bore size | Ø40 mm |
| Stroke | 44 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 SAU40X44 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 SAU40X44 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 SU40X44
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×44 | 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 SU40X44 Is Used
Small Parts Clamping
Ideal for holding lightweight aluminum or plastic components during machining, delivering 628 N of clamping force at 0.5 MPa without deforming the workpiece.
Package Diverting
Provides a short 44mm stroke to push small cartons off a production line, fitting neatly into compact machinery spaces where longer cylinders would collide.
Replacing the Airtac SU32~50 Standard Cylinder SU40X44 with the SAU40X44
To replace this discontinued SU40X44, order the SAU40X44 direct equivalent, verifying your 1/4" port, M12x1.25 rod thread, and SC-series mounting accessories (LB/FA/FB/CA/CB). Because this specific SKU has no magnet (-S), it cannot support sensing; if your machine requires position detection, specify an SAU40X44S and migrate to the current CMSG/DMSG/EMSG sensor family, as the legacy CS1-B/DS1-B switches are obsolete. When sizing, the 40mm bore yields 628 N push and 528 N pull at 0.5 MPa; if you need less force, a 32mm bore offers 402 N, or step up to a 50mm bore for 982 N. Note that this 44mm stroke is nonstandard. Finally, a plain cylinder drifts on air loss—the 21mm adjustable cushions only decelerate the piston near stroke end, so add an external rod lock or pilot-operated check valve for secure load holding.
Replacement checklist
- ✓ Same bore / stroke → SAU40X44
- ✓ 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 SU40X44 FAQ
Yes, the SU40X44 is discontinued. The direct replacement is the AirTAC SAU40X44. It features the same 40mm bore, 44mm stroke, 1/4" port, and SC-series mounting, so it fits the same application without mechanical modifications.
At 0.5 MPa, it provides 628 N push and 528 N pull force, increasing to 879 N push at 0.7 MPa, with a theoretical maximum of 128 kgf at 1.0 MPa. This specific SKU lacks a magnet, so it cannot accept sensors; the SAU replacement with a magnet (-S) uses modern CMSG/DMSG/EMSG switches.
Request a Quote for the SAU40X44
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X44 replacement — usually within 7-8 hours.