This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X40, 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 SU50X40
The AirTAC Airtac SU32~50 Standard Cylinder SU50X40 is a double-acting profile-type standard cylinder with a Ø50mm bore and 40mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X40, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke40 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X40
- 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 SU50X40
The AirTAC SU50X40 is a discontinued double-acting profile-type cylinder with a 50mm bore and 40mm stroke. It delivers 982N push and 825N pull at 0.5MPa via a 1/4" port. AirTAC replaced this unit with the SAU50X40, a direct upgrade retaining the exact bore, stroke, output force, and SC-series mounting footprint.
This legacy SKU lacks a magnet, so it cannot accept a sensor; the SAU upgrade enables modern CMSG/DMSG/EMSG switches if you add the -S option. The extruded aluminium body is more compact than an ISO 15552 equivalent.
Airtac SU32~50 Standard Cylinder SU50X40 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X40 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X40 |
| Bore size | Ø50 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M16×1.5 |
| 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 SAU50X40 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAU50X40 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 SU50X40
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×40 | 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 SU50X40 Is Used
Short-Stroke Clamping
Ideal for holding 50kg workpieces firmly in machining fixtures using the 982N push force at 0.5MPa.
Package Diverting
Provides rapid 40mm actuation to push or sort light-to-medium cartons off a production line.
Pallet Stop Gates
Acts as a compact 50mm bore stopper in material handling lanes, reusing existing SC-series mounts.
Replacing the Airtac SU32~50 Standard Cylinder SU50X40 with the SAU50X40
To replace this SU50X40, order the SAU50X40. Verify your 1/4" port, M16x1.5 rod thread, and SC-series mounting (LB/FA/FB/CA/CB) are unchanged. Because this specific SKU has no magnet (-S), it cannot hold a sensor; if you need position detection on the SAU, specify the -S suffix and migrate from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches. Sizing both ways: a 40mm bore gives 628N push at 0.5MPa (smaller), while a 63mm bore yields 1559N (larger). For load holding on air loss, add an external rod lock or pilot-operated check valve, as the 21mm adjustable cushion only decelerates. The SAUF variant offers a built-in valve the SU lacked.
Replacement checklist
- ✓ Same bore / stroke → SAU50X40
- ✓ 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 SU50X40 FAQ
Yes, the SU50X40 is end-of-life. The direct replacement is the AirTAC SAU50X40. It shares the identical 50mm bore, 40mm stroke, 1/4" port, output force, and SC-series mounting accessories, so it fits the same application directly.
At 0.5MPa it provides 982N push and 825N pull; at 0.7MPa it pushes 1374N, with a theoretical max of 200kgf at 1.0MPa. This specific SKU has no magnet, meaning it cannot accept a sensor. The SAU replacement supports CMSG/DMSG/EMSG switches if ordered with the -S option.
Request a Quote for the SAU50X40
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X40 replacement — usually within 7-8 hours.