This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X25N, 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 SU50X25N
The AirTAC SU32~50 Standard Cylinder SU50X25N 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 SAU50X25N, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke25 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X25N
- 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 SU50X25N
The AirTAC SU50X25N is a discontinued double-acting profile-type cylinder with a 50mm bore and 25mm stroke. Delivering 982N push force at 0.5MPa, it features an extruded aluminum barrel and adjustable air cushions at both ends. AirTAC replaced this EOL unit with the SAU50X25N direct replacement. The SAU retains the exact 50mm bore, 25mm stroke, 1/4" port, M16x1.5 rod thread, and SC-series mounting accessories, ensuring a seamless upgrade.
This NBR-sealed (-N) variant operates from -20 to 70C. Since this SKU lacks a magnet (-S), it cannot accept magnetic sensors. The SAU upgrade introduces the CMSG/DMSG/EMSG sensor family (replacing legacy CS1-B/DS1-B) and adds a SAUF built-in 4M valve option. Note that standard cylinders drift without live air; use an external rod lock for load holding.
Airtac SU32~50 Standard Cylinder SU50X25N Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X25N |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X25N |
| 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 SAU50X25N 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 SAU50X25N 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 SU50X25N
| 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 SU50X25N Is Used
Short-Stroke Clamping
Ideal for holding parts during machining, using the 25mm stroke to quickly secure workpieces with 982N of clamping force at 0.5 MPa.
Package Diverting
Provides rapid actuation for sorting light to medium packages on a line, where the compact 50mm profile saves space without sacrificing push power.
Replacing the Airtac SU32~50 Standard Cylinder SU50X25N with the SAU50X25N
To replace the discontinued SU50X25N, order the SAU50X25N. Verify your 1/4" port (default PT, or G/NPT) and SC-series mounting (LB/FA/FB/CA/CB). This no-magnet SKU cannot take a sensor; if you need position detection, order the SAU50X25NS and use CMSG/DMSG/EMSG switches. For sizing both ways: a 40mm bore provides 628N push @0.5MPa, while a 63mm bore yields 1559N. A plain cylinder drifts on air loss—the cushion only decelerates—so add a pilot-operated check valve for load holding. The SAUF variant integrates a 4M valve if you need self-switching.
Replacement checklist
- ✓ Same bore / stroke → SAU50X25N
- ✓ 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 SU50X25N FAQ
Yes, the SU50X25N is discontinued. The direct replacement is the AirTAC SAU50X25N. It shares the same 50mm bore, 25mm stroke, 982N force at 0.5 MPa, 1/4" port, and SC-series mounting, so it fits your existing application directly. The SAU also adds a SAUF built-in-valve option the SU line lacked.
The 50mm bore delivers 982N push and 825N pull at 0.5 MPa, 1374N push at 0.7 MPa, and a theoretical max of 200 kgf at 1.0 MPa. Because this specific SU50X25N SKU lacks a magnet, it cannot accept magnetic sensors. If sensing is required, upgrade to the SAU50X25NS, which uses current CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B.
Request a Quote for the SAU50X25N
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X25N replacement — usually within 7-8 hours.