This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X420S, 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 SU50X420S
The AirTAC SU32~50 Standard Cylinder SU50X420S is a double-acting profile-type standard cylinder with a Ø50mm bore and 420mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X420S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke420 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAU50X420S
- 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 SU50X420S
The AirTAC SU50X420S is a discontinued double-acting profile-type cylinder with a 50mm bore and 420mm stroke. AirTAC replaced this unit with the SAU50X420S, a direct upgrade retaining the exact 1/4" port, M16x1.5 rod thread, output force, and SC-series mounting.
Because your SKU includes the -S magnet, note that the SAU replacement transitions from the legacy CS1-B/DS1-B switches to the current CMSG/DMSG/EMSG sensor family. The new SAU line also introduces a SAUF variant featuring a built-in 4M solenoid valve for self-switching, an option the original SU series lacked. Both generations share the extruded aluminum profile body, making them shorter and more compact than an ISO 15552 cylinder of the same bore.
Airtac SU32~50 Standard Cylinder SU50X420S Technical Specifications
| Model | Airtac SU32~50 Standard Cylinder SU50X420S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X420S |
| Bore size | Ø50 mm |
| Stroke | 420 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 SAU50X420S 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 SAU50X420S 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 SU50X420S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×420 | 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 SU50X420S Is Used
Package Diverting
Pushes cartons at 30-800 mm/s on packaging lines, utilizing the 982 N push force to reroute items smoothly without overshoot via the adjustable cushions.
Parts Ejection
Ejects molded or machined components from fixtures, where the compact profile body saves space while the M16x1.5 rod thread handles repetitive impact.
Replacing the Airtac SU32~50 Standard Cylinder SU50X420S with the SAU50X420S
To replace this discontinued SU50X420S, order the SAU50X420S. Verify your 1/4" port thread (PT, G, or NPT) and SC-series mounting hardware (LB, FA, FB, CA, CB, or TC) as these remain identical. The -S magnet transfers over, but you must upgrade your switches from CS1-B/DS1-B to the CMSG/DMSG/EMSG family. If your application needs a self-contained valve, consider the SAUF variant. For sizing, the neighboring 40mm bore provides 628 N push at 0.5 MPa, while the 63mm bore offers 1559 N. Remember, a plain cylinder drifts without live air; the 21mm adjustable cushions only decelerate, so use an external rod lock or pilot-operated check valve for load holding. Finally, at 420mm stroke, prevent rod bending by guiding the load externally to avoid side-loading.
Replacement checklist
- ✓ Same bore / stroke → SAU50X420S
- ✓ 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 SU50X420S FAQ
Yes, the SU50X420S is discontinued. The direct replacement is the AirTAC SAU50X420S. It shares the same 50mm bore, 420mm stroke, 1/4" port, output force, and SC-series mounting, so it fits your existing application directly.
It delivers 982 N push and 825 N pull at 0.5 MPa, 1374 N at 0.7 MPa, and a theoretical max of 200 kgf at 1.0 MPa. The -S magnet on this SU worked with legacy CS1-B/DS1-B switches; the SAU replacement requires upgrading to CMSG/DMSG/EMSG sensors.
Related AirTAC SAU Cylinders
Request a Quote for the SAU50X420S
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X420S replacement — usually within 7-8 hours.