This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X25STC, 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 SU50X25STC
The AirTAC SU32~50 Standard Cylinder SU50X25STC is a double-acting profile-type standard cylinder with a Ø50mm bore and 25mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X25STC, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke25 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X25STC
- 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 SU50X25STC
The AirTAC SU50X25STC is a discontinued double-acting profile-type cylinder with a 50mm bore and 25mm stroke. Delivering 982N push force at 0.5MPa, its extruded aluminum body is more compact than an ISO 15552 unit of the same bore. AirTAC replaced this EOL unit with the SAU50X25STC, a direct replacement retaining the exact 1/4" port, M16x1.5 rod thread, and SC-series TC mounting interface.
When upgrading, note the SAU50X25STC uses current CMSG/DMSG/EMSG sensors instead of this model's legacy CS1-B/DS1-B switches, and the SAUF variant adds a built-in valve the SU lacked. Remember, the adjustable cushion only decelerates; use an external rod lock to hold loads.
Airtac SU32~50 Standard Cylinder SU50X25STC Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X25STC |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X25STC |
| Bore size | Ø50 mm |
| Stroke | 25 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 SAU50X25STC 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 SAU50X25STC 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 SU50X25STC
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×25 | 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 SU50X25STC Is Used
Short-Stroke Clamping
Ideal for securing 50kg workpieces in machining fixtures, utilizing the 982N push force within a compact 25mm travel.
Package Diverting
Provides rapid actuation for sorting lightweight goods on a line, where the TC mount allows rigid side attachment.
Ejector Stations
Delivers quick, short bursts to push completed parts out of testing jigs without occupying excessive frame space.
Replacing the Airtac SU32~50 Standard Cylinder SU50X25STC with the SAU50X25STC
To replace this discontinued SU50X25STC, order the SAU50X25STC direct equivalent, verifying your 50mm bore, 25mm stroke, 1/4" port, and TC mounting accessory. If your application uses the -S magnet, you must upgrade to CMSG/DMSG/EMSG sensors since the legacy CS1-B/DS1-B switches are incompatible with the SAU. For higher force needs, consider the 63mm bore (1559N at 0.5MPa); for lighter duties, the 40mm bore offers 628N. Because the plain cylinder drifts without live air, integrate a pilot-operated check valve or rod lock for load holding. The 25mm stroke is short enough to avoid rod-bending side-load issues, but always guide the load rigidly.
Replacement checklist
- ✓ Same bore / stroke → SAU50X25STC
- ✓ 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 SU50X25STC FAQ
Yes, the AirTAC SU50X25STC is discontinued and end-of-life. The direct replacement is the SAU50X25STC. It shares the same 50mm bore, 25mm stroke, 982N output force, 1/4" port, and SC-series TC mounting, so it fits your existing application directly.
The 50mm bore provides 982N push and 825N pull at 0.5MPa, 1374N push at 0.7MPa, and a 200kgf maximum at 1.0MPa. The -S magnet on this legacy model works with CS1-B/DS1-B switches, but the SAU replacement requires the newer CMSG/DMSG/EMSG sensor family.
Related AirTAC SAU Cylinders
Request a Quote for the SAU50X25STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X25STC replacement — usually within 7-8 hours.