This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X270S, 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.

The AirTAC SU32~50 Standard Cylinder SU50X270S is a double-acting profile-type standard cylinder with a Ø50mm bore and 270mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X270S, which matches its bore, stroke, force and mounting.
The AirTAC SU50X270S is a discontinued double-acting profile-type cylinder with a 50mm bore and 270mm stroke. Delivering 982N push force at 0.5MPa via a 1/4" port, its extruded aluminium body is more compact than an ISO 15552 equivalent. AirTAC's direct replacement is the SAU50X270S, matching the exact bore, stroke, force, port and SC-series mounting.
The SAU upgrade introduces CMSG/DMSG/EMSG sensors to replace this unit's legacy CS1-B/DS1-B switches, and adds the SAUF valve-integrated option. Note that cushions only decelerate; use an external rod lock to hold loads.
| Model | Airtac SU32~50 Standard Cylinder SU50X270S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X270S |
| Bore size | Ø50 mm |
| Stroke | 270 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 SAU50X270S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAU50X270S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×270 | 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.
Pushes cartons at 30-800mm/s on packaging lines, utilizing the 982N thrust to redirect loads smoothly without overshooting.
Secures workpieces in machining cells where the compact profile body saves space compared to standard ISO cylinders.
To replace this discontinued SU50X270S, order the SAU50X270S direct equivalent, verifying the 50mm bore, 270mm stroke, 1/4" port, M16x1.5 rod thread and SC-series mounting. Because this SKU includes a magnet (-S), you must migrate from the old CS1-B/DS1-B switches to the current CMSG/DMSG/EMSG sensor family. For forces, the 50mm bore yields 982N push at 0.5MPa; neighbouring bores are 40mm (628N) and 63mm (1559N). At 270mm stroke, ensure guide rails carry side loads to prevent rod bending. The cylinder will not hold a load without air; add a pilot-operated check valve or rod lock. The SAUF variant offers a built-in 4M valve if you need self-switching.
Replacement checklist
Yes, the SU50X270S is discontinued. The direct replacement is the AirTAC SAU50X270S. It shares the identical 50mm bore, 270mm stroke, 982N force, 1/4" port and SC-series mounting. The only change is that the -S magnet now requires CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
The 50mm bore features a 1/4" port and provides 982N push / 825N pull at 0.5MPa, 1374N push at 0.7MPa, and a theoretical maximum of 200kgf at 1.0MPa. It operates at 30-800mm/s with a 20mm piston rod and M16x1.5 thread.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X270S replacement — usually within 7-8 hours.