This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X125, 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 SU50X125
The AirTAC SU32~50 Standard Cylinder SU50X125 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 SAU50X125, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke125 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X125
- 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 SU50X125
The AirTAC SU50X125 is a discontinued double-acting profile-type cylinder with a 50mm bore and 125mm stroke. It delivers 982N push force at 0.5MPa via a 1/4" port. AirTAC replaced this unit with the SAU50X125, a direct upgrade retaining the exact bore, stroke, force, port size, and SC-series mounting compatibility.
Because this SKU lacks a magnet, it cannot accept a position sensor. The SAU upgrade introduces the SAUF variant with a built-in 4M solenoid valve, an option the SU line never offered. The extruded aluminum body is shorter than an ISO 15552 cylinder of the same bore.
Airtac SU32~50 Standard Cylinder SU50X125 Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X125 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X125 |
| 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 SAU50X125 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 SAU50X125 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 SU50X125
| 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 SU50X125 Is Used
Package Diversion
Actuates routing gates on packaging lines, utilizing the 125mm stroke to push standard totes smoothly without overwhelming the 982N mid-range force class.
Pallet Stopper Arm
Deploys a stopping flap at conveyor ends to halt 50kg pallet loads safely, relying on the compact profile body to fit within tight conveyor frame clearances.
Clamp Actuation
Drives mid-force clamping fixtures for light machining or assembly, providing reliable 0.5MPa thrust while the adjustable cushions soften end-of-stroke impacts.
Replacing the Airtac SU32~50 Standard Cylinder SU50X125 with the SAU50X125
To replace this SU50X125, order the SAU50X125. Confirm your 1/4" port thread (PT, G, or NPT) and mounting brackets (SC-series LB, FA, FB, CA, CB). Since this specific SKU has no magnet (-S), it cannot support sensing; if you require position detection, the SAU replacement allows CMSG/DMSG/EMSG switches. For loads needing 1374N at 0.7MPa, step up to a 63mm bore; for lighter 628N loads, a 40mm bore suffices. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot-operated check valve for held loads. If your application needs self-switching, explore the SAUF valve-integrated variant.
Replacement checklist
- ✓ Same bore / stroke → SAU50X125
- ✓ 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 SU50X125 FAQ
Yes, the AirTAC SU50X125 is discontinued. The direct replacement is the SAU50X125. It shares the identical 50mm bore, 125mm stroke, 982N force, 1/4" port, and SC-series mounting, so it drops right into your existing setup.
At 0.5MPa it provides 982N push and 825N pull force; at 0.7MPa it pushes 1374N, and the theoretical max is 200kgf at 1.0MPa. Because this specific SKU lacks a magnet, it cannot take a sensor; the SAU replacement uses CMSG/DMSG/EMSG switches if sensing is needed.
Request a Quote for the SAU50X125
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X125 replacement — usually within 7-8 hours.