This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X500FA, 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 SU40X500FA
The AirTAC Airtac SU32~50 Standard Cylinder SU40X500FA is a double-acting profile-type standard cylinder with a Ø40mm bore and 500mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X500FA, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke500 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X500FA
- 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 SU40X500FA
The AirTAC SU40X500FA is a discontinued double-acting profile-type cylinder with a 40 mm bore and 500 mm stroke. It delivers 628 N push force at 0.5 MPa through a 1/4 inch port. AirTAC replaced this unit with the SAU40X500FA, a direct alternative retaining the exact bore, stroke, output force, port size, and SC-series FA mounting interface.
Because this SKU lacks a magnet, it cannot accept a position sensor; furthermore, the SAU family upgrades sensing to CMSG/DMSG/EMSG switches (the legacy line used CS1-B/DS1-B) and introduces the SAUF built-in valve option. Note that standard air cushions only decelerate the piston near stroke end; they do not hold the load if air pressure drops.
Airtac SU32~50 Standard Cylinder SU40X500FA Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X500FA |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X500FA |
| Bore size | Ø40 mm |
| Stroke | 500 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 SAU40X500FA 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 SAU40X500FA 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 SU40X500FA
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×500 | 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 SU40X500FA Is Used
Long-Stroke Diversion
Pushes packages across a transfer line using the 500 mm stroke and 628 N force, guided externally to prevent rod bending during the traverse.
FA-Mounted Ejection
Mounts via the front FA bracket to eject parts from a machine bed, delivering 879 N push at 0.7 MPa for positive part removal.
Replacing the Airtac SU32~50 Standard Cylinder SU40X500FA with the SAU40X500FA
To replace this discontinued SU40X500FA, order the SAU40X500FA, confirming the 40 mm bore, 500 mm stroke, 1/4 inch port (default PT thread), M12x1.25 rod thread, and the SC-series FA front mounting bracket. Since this specific SKU has no magnet (-S), it cannot support a sensor; if sensing is needed on the new unit, specify an SAU-S model and use CMSG/DMSG/EMSG switches rather than the legacy CS1-B/DS1-B. For force verification, the 40 mm bore provides 628 N push at 0.5 MPa; if downsizing to a 32 mm bore yields 402 N, or upsizing to a 50 mm bore provides 982 N. With the 500 mm stroke, external guides are recommended to prevent rod bending under side loads. Finally, a plain cylinder drifts on air loss—use an external rod lock or pilot-operated check valve for load holding.
Replacement checklist
- ✓ Same bore / stroke → SAU40X500FA
- ✓ 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 SU40X500FA FAQ
Yes, the SU40X500FA is discontinued. The direct replacement is the SAU40X500FA, which matches the 40 mm bore, 500 mm stroke, 1/4 inch port, force, and SC-series FA mounting.
The 40 mm bore generates 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 specific SKU lacks a magnet, it cannot accept a sensor; the SAU replacement uses CMSG/DMSG/EMSG switches.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X500FA
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X500FA replacement — usually within 7-8 hours.