This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X25, 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 SU50X25
The AirTAC Airtac SU32~50 Standard Cylinder SU50X25 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 SAU50X25, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke25 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X25
- 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 SU50X25
The AirTAC SU50X25 is a discontinued double-acting profile-type cylinder with a 50mm bore and 25mm stroke. It delivers 982 N push force at 0.5 MPa via a 1/4" port. AirTAC replaced this unit with the SAU50X25, a direct alternative retaining the exact bore, stroke, force, port size, and SC-series mounting footprint.
When upgrading to the SAU50X25, note that the compact extruded aluminum body is shorter than a standard ISO 15552 cylinder. Because this specific SU50X25 SKU lacks a magnet (-S), it cannot accept a sensor; furthermore, a plain cylinder drifts on air loss, so use an external rod lock for load holding.
Airtac SU32~50 Standard Cylinder SU50X25 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X25 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X25 |
| 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 SAU50X25 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 SAU50X25 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 SU50X25
| 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 SU50X25 Is Used
Short-Stroke Clamping
Ideal for holding parts during machining with a 25mm stroke, utilizing the 982 N push force at 0.5 MPa for secure, rigid workholding.
Package Diverting
Provides rapid actuation for diverting light packages on a conveyor line, taking advantage of the 30-800 mm/s speed range.
Ejector Mechanism
Delivers fast, compact ejection of finished goods from machinery, fitting neatly into tight spaces due to the profile body design.
Replacing the Airtac SU32~50 Standard Cylinder SU50X25 with the SAU50X25
To replace the SU50X25, order the SAU50X25. Confirm your 1/4" port thread (PT, G, or NPT) and SC-series mounting (LB, FA, FB, CA, CB, TC). Since this SKU has no -S magnet, it cannot support a sensor; if sensing is needed, order the SAU50X25S and migrate from the old CS1-B/DS1-B switches to the current CMSG/DMSG/EMSG family. The SAU line also offers the SAUF variant with a built-in 4M solenoid valve. For sizing alternatives, a 40mm bore yields 628 N push at 0.5 MPa, while a 63mm bore provides 1559 N. The air cushion only decelerates the piston near stroke end; it does not hold the load, so add a pilot-operated check valve for vertical loads.
Replacement checklist
- ✓ Same bore / stroke → SAU50X25
- ✓ 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 SU50X25 FAQ
Yes, the SU50X25 is discontinued. The direct replacement is the AirTAC SAU50X25. It shares the identical 50mm bore, 25mm stroke, 982 N force at 0.5 MPa, 1/4" port, and SC-series mounting, so it fits the same application directly.
At 0.5 MPa it provides 982 N push and 825 N pull force, reaching 1374 N push at 0.7 MPa, with a theoretical max of 200 kgf at 1.0 MPa. Because this specific SU50X25 SKU lacks a magnet, it cannot accept a sensor; the SAU50X25S replacement uses CMSG/DMSG/EMSG switches.
Request a Quote for the SAU50X25
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X25 replacement — usually within 7-8 hours.