This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X320S, 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 SU50X320S
The AirTAC Airtac SU32~50 Standard Cylinder SU50X320S is a double-acting profile-type standard cylinder with a Ø50mm bore and 320mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X320S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke320 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X320S
- 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 SU50X320S
The AirTAC SU50X320S is a discontinued double-acting profile-type cylinder with a 50mm bore and 320mm stroke. Delivering 982 N push force at 0.5 MPa, it uses a 1/4" port and M16x1.5 rod thread. AirTAC replaced this legacy unit with the SAU50X320S, a direct upgrade retaining the exact bore, stroke, output force, port size, and SC-series mounting compatibility.
The SAU replacement modernizes the sensor groove: your existing -S magnet worked with legacy CS1-B/DS1-B switches, but the SAU requires current CMSG/DMSG/EMSG sensors. The new SAU line also introduces a SAUF variant with a built-in 4M solenoid valve.
Airtac SU32~50 Standard Cylinder SU50X320S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X320S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X320S |
| Bore size | Ø50 mm |
| Stroke | 320 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 SAU50X320S 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 SAU50X320S 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 SU50X320S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×320 | 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 SU50X320S Is Used
Package Diverting
Pushes medium-weight cartons off a sorting line using 982 N of thrust at 0.5 MPa, with the 320mm stroke clearing the conveyor belt width.
Pallet Stops
Acts as a pneumatic stop gate for 50 kg pallet loads, benefiting from the compact profile body that saves space in tight transfer cells.
Component Ejection
Ejects machined parts from a fixture, using the adjustable 21mm air cushions to decelerate the rod smoothly at stroke ends.
Replacing the Airtac SU32~50 Standard Cylinder SU50X320S with the SAU50X320S
To replace this discontinued SU50X320S, order the SAU50X320S direct equivalent, verifying your 1/4" port, M16x1.5 thread, and SC-series mounting (LB/FA/FB/CA/CB). Because this SKU includes the -S magnet, note the sensor family change from legacy CS1-B/DS1-B to CMSG/DMSG/EMSG. If checking neighbouring bores, a 40mm bore yields 628 N push while a 63mm bore provides 1559 N at 0.5 MPa. For the 320mm stroke, add external guides to prevent rod bending under side loads. This cylinder will not hold a load on air loss; use an external rod lock or pilot-operated check valve for secure positioning, as the cushion only decelerates.
Replacement checklist
- ✓ Same bore / stroke → SAU50X320S
- ✓ 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 SU50X320S FAQ
Yes, the SU50X320S is discontinued. The direct replacement is the AirTAC SAU50X320S. It shares the same 50mm bore, 320mm stroke, 1/4" port, output force, and SC-series mounting accessories, so it fits the same application. You simply order the SAU equivalent.
This double-acting cylinder provides 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and a theoretical max of 200 kgf at 1.0 MPa. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches; when upgrading to the SAU replacement, you must switch to current CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU50X320S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X320S replacement — usually within 7-8 hours.