This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X125S, 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 SU50X125S
The AirTAC SU32~50 Standard Cylinder SU50X125S 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 SAU50X125S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke125 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X125S
- 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 SU50X125S
The AirTAC SU50X125S is a discontinued double-acting profile-type cylinder with a 50mm bore and 125mm stroke. It delivers 982 N push force at 0.5 MPa through a 1/4 inch port. AirTAC replaced this legacy unit with the SAU50X125S, a direct alternative retaining the exact bore, stroke, force, port size, and SC-series mounting footprint.
When upgrading to the SAU, the body dimensions and 21 mm adjustable cushions remain identical, but the sensor family changes: this SU uses legacy CS1-B/DS1-B switches, while the SAU takes current CMSG/DMSG/EMSG sensors. The SAU line also introduces a SAUF variant with a built-in 4M solenoid valve the SU lacked.
Airtac SU32~50 Standard Cylinder SU50X125S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X125S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X125S |
| 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 SAU50X125S 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 SAU50X125S 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 SU50X125S
| 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 SU50X125S Is Used
Clamping Mechanisms
Secures medium workpieces during machining, utilizing the 982 N push force at 0.5 MPa for rigid, stable holding without deflection.
Package Diverting
Actuates routing gates on production lines, where the 125 mm stroke provides rapid, precise redirection of goods at up to 800 mm/s.
Replacing the Airtac SU32~50 Standard Cylinder SU50X125S with the SAU50X125S
To replace this SU50X125S, order the SAU50X125S and verify your 1/4" port threads (PT, G, or NPT) alongside the M16x1.5 rod-end. Because this SKU includes the -S magnet, note that your existing CS1-B/DS1-B switches must change to CMSG/DMSG/EMSG sensors on the new cylinder. If your application needs higher force, the neighbouring 63mm bore provides 1559 N push at 0.5 MPa; if less is required, the 40mm bore offers 628 N. Remember that a standard cylinder drifts without live air—the cushions only decelerate—so add an external rod lock or pilot-operated check valve for secure load holding. The 125mm stroke is under the 300mm threshold, so rod-bending side-load risks are minimal, but always guide the payload. If valve integration is desired, explore the SAUF variant.
Replacement checklist
- ✓ Same bore / stroke → SAU50X125S
- ✓ 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 SU50X125S FAQ
Yes, the AirTAC SU50X125S is discontinued and end-of-life. The direct replacement is the SAU50X125S. It features the same 50mm bore, 125mm stroke, 1/4" port, output force, and SC-series mounting, so it fits your existing application directly without mechanical modifications.
The 50mm bore generates 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and a theoretical maximum of 200 kgf at 1.0 MPa. Because this is the -S magnet version, it originally used CS1-B/DS1-B switches; the SAU50X125S replacement requires upgrading to CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU50X125S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X125S replacement — usually within 7-8 hours.