This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X125N, 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 SU50X125N
The AirTAC SU32~50 Standard Cylinder SU50X125N is a double-acting profile-type standard cylinder with a Ø50mm bore and 125mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X125N, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke125 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X125N
- 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 SU50X125N
The AirTAC SU50X125N is a discontinued double-acting profile-type cylinder with a 50mm bore and 125mm stroke. Delivering 982 N of push force at 0.5 MPa, it features an extruded aluminum barrel and adjustable air cushions at both ends, making it more compact than an ISO 15552 cylinder of the same bore. AirTAC replaced this end-of-life unit with the SAU50X125N, a direct replacement retaining the exact 50mm bore, 125mm stroke, 1/4" port, M16x1.5 rod thread, and SC-series mounting compatibility.
Because this SKU lacks a magnet (-S), it cannot accept any sensor. If sensing is needed on the SAU upgrade, you must specify the -S option, which transitions from the legacy CS1-B/DS1-B switches to the current CMSG/DMSG/EMSG family. The -N seal denotes NBR rubber, operating reliably from -20 to +70 C.
Airtac SU32~50 Standard Cylinder SU50X125N Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X125N |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X125N |
| Bore size | Ø50 mm |
| Stroke | 125 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 SAU50X125N 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 SAU50X125N 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 SU50X125N
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×125 | 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 SU50X125N Is Used
Pallet Stopper Gate
Acts as a compact physical stop for pallets entering a wrapping station, fitting neatly into existing SC-series mounting brackets.
Clamp Actuation
Secures aluminum extrusions during machining operations, providing 982 N of clamping force without requiring ISO 15552 dimensions.
Replacing the Airtac SU32~50 Standard Cylinder SU50X125N with the SAU50X125N
To replace the discontinued SU50X125N, order the SAU50X125N direct equivalent, verifying your 1/4" port thread (PT, G, or NPT) and SC-series mounting hardware (LB, FA, FB, CA, CB, or TC). Since this specific SKU has no magnet, it cannot support position sensing; if your application requires switches, select the SAU50X125NS and upgrade to CMSG/DMSG/EMSG sensors. For loads approaching the 982 N push force at 0.5 MPa, consider neighboring bores like the 40mm (628 N) for lighter duties or the 63mm (1559 N) for heavier needs. Note that a plain cylinder does not hold load without live air—the cushion only decelerates—so add an external rod lock or pilot-operated check valve for vertical holding. The SAUF variant with a built-in 4M solenoid valve is also available if you need self-switching.
Replacement checklist
- ✓ Same bore / stroke → SAU50X125N
- ✓ 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 SU50X125N FAQ
Yes, the SU50X125N is discontinued. The direct replacement is the AirTAC SAU50X125N. It shares the identical 50mm bore, 125mm stroke, output force, 1/4" port, and SC-series mounting accessories, so it drops right into the same application.
At 0.5 MPa it provides 982 N push and 825 N pull force, increasing to 1374 N push at 0.7 MPa, with a theoretical max of 200 kgf at 1.0 MPa. Because this specific SU50X125N SKU lacks a magnet, it cannot accept position sensors; the SAU replacement with a -S option uses CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B.
Related AirTAC SAU Cylinders
Request a Quote for the SAU50X125N
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X125N replacement — usually within 7-8 hours.