This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU40X400FA, 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 SU40X400FA
The AirTAC Airtac SU32~50 Standard Cylinder SU40X400FA is a double-acting profile-type standard cylinder with a Ø40mm bore and 400mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU40X400FA, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke400 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAU40X400FA
- 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 SU40X400FA
The AirTAC SU40X400FA is a discontinued double-acting profile-type cylinder with a 40mm bore and 400mm stroke. It delivers 628N push and 528N pull at 0.5MPa via a 1/4" port. The direct replacement is the SAU40X400FA, matching the bore, stroke, force, port and SC-series FA mounting.
This extruded aluminium body is more compact than an ISO 15552 equivalent. Note this SKU lacks a magnet and cannot take a sensor. The SAU upgrade uses CMSG/DMSG/EMSG switches and adds a SAUF built-in-valve option the SU lacked.
Airtac SU32~50 Standard Cylinder SU40X400FA Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU40X400FA |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU40X400FA |
| Bore size | Ø40 mm |
| Stroke | 400 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 SAU40X400FA 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 SAU40X400FA 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 SU40X400FA
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×400 | 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 SU40X400FA Is Used
Pallet Stopper Gate
Acts as a 32kg vertical lift barrier or horizontal stop, relying on the 628N thrust at 0.5MPa to hold position during transit.
Component Ejection
Ejects machined parts from a fixture over 400mm, requiring external guides to prevent rod bending during the extended reach.
Replacing the Airtac SU32~50 Standard Cylinder SU40X400FA with the SAU40X400FA
To replace this discontinued SU40X400FA, order the SAU40X400FA. Confirm the 1/4" port, M12x1.25 rod thread and FA foot mount. Because this SKU has no -S magnet, it cannot accept a sensor; if sensing is needed, specify an SAU with -S and use CMSG/DMSG/EMSG switches (the SU used legacy CS1-B/DS1-B). For the 400mm stroke, use an external guide to prevent rod bending and side loads. Sizing both ways: a 32mm bore gives 402N push at 0.5MPa, while a 50mm bore gives 982N. The air cushion only decelerates; for load holding on air loss, add an external rod lock or pilot-operated check valve. The SAUF variant integrates a 4M valve if needed.
Replacement checklist
- ✓ Same bore / stroke → SAU40X400FA
- ✓ 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 SU40X400FA FAQ
Yes, the SU40X400FA is discontinued. The direct replacement is the SAU40X400FA. It provides the same 40mm bore, 400mm stroke, 628N force at 0.5MPa, 1/4" port and SC-series FA mounting.
It pushes 628N and pulls 528N at 0.5MPa, pushes 879N at 0.7MPa, with a 128kgf max at 1.0MPa. The 21mm adjustable cushion only decelerates; it does not hold the load on air loss. For load holding, use an external rod lock or pilot-operated check valve.
Related AirTAC SAU Cylinders
Request a Quote for the SAU40X400FA
Send us the quantity and destination. We confirm price, stock and lead time on the SAU40X400FA replacement — usually within 7-8 hours.