This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X300FA, 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 SU40X300FA
The AirTAC Airtac SU32~50 Standard Cylinder SU40X300FA is a double-acting profile-type standard cylinder with a Ø40mm bore and 300mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X300FA, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke300 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X300FA
- 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 SU40X300FA
The AirTAC SU40X300FA is a discontinued double-acting profile-type cylinder with a 40mm bore and 300mm stroke. Delivering 628 N push at 0.5 MPa, it uses an extruded aluminum barrel that is more compact than an ISO 15552 unit of the same bore. AirTAC replaced it with the SAU40X300FA, a direct replacement retaining the same force, 1/4" port, and SC-series FA mounting.
This SKU lacks a magnet, so it cannot accept a sensor. The SAU upgrade switches to CMSG/DMSG/EMSG switches and adds a SAUF built-in-valve option. Note that cushions only decelerate; use a rod lock for holding.
Airtac SU32~50 Standard Cylinder SU40X300FA Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X300FA |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X300FA |
| Bore size | Ø40 mm |
| Stroke | 300 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 SAU40X300FA 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 SAU40X300FA 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 SU40X300FA
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×300 | 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 SU40X300FA Is Used
Package Diverting
Pushes light cartons off a sorting line using 628 N of thrust, with the 300mm stroke reaching across the belt.
Pallet Stop Gate
Acts as a pneumatic stop for inbound pallets, handling the 32 kg vertical lift capacity safely.
Component Ejection
Ejects machined parts from a fixture, utilizing the adjustable 21mm cushions to soften end-of-stroke impact.
Replacing the Airtac SU32~50 Standard Cylinder SU40X300FA with the SAU40X300FA
To replace this discontinued SU40X300FA, order the SAU40X300FA, matching the 40mm bore, 300mm stroke, 1/4" port, M12x1.25 rod thread, and FA foot mount. If downsizing, a 32mm bore yields 402 N push; if upsizing, a 50mm bore yields 982 N. This no-magnet SKU cannot take a sensor, but if you need position detection on the SAU, order the -S version and use CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B. For the 300mm stroke, use an external guide to prevent rod bending from side loads. The cushion only decelerates; add a pilot-operated check valve to hold loads.
Replacement checklist
- ✓ Same bore / stroke → SAU40X300FA
- ✓ 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 SU40X300FA FAQ
Yes, the SU40X300FA is discontinued. The direct replacement is the AirTAC SAU40X300FA. It shares the same 40mm bore, 300mm stroke, 628 N output force, 1/4" port, and SC-series FA mounting, so it fits the same application without modification.
At 0.5 MPa it pushes 628 N and pulls 528 N; at 0.7 MPa it pushes 879 N, and the theoretical max is 128 kgf at 1.0 MPa. The air cushions only decelerate the piston near stroke end; they do not hold a load. If air pressure drops, the piston drifts, so you must use an external rod lock or pilot-operated check valve for vertical load holding.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X300FA
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X300FA replacement — usually within 7-8 hours.