This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X270, 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 SU50X270 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 SAU50X270, which matches its bore, stroke, force and mounting.
The AirTAC SU50X270 is a discontinued double-acting profile-type cylinder with a 50mm bore and 270mm stroke. It delivers 982N push force at 0.5MPa via a 1/4" port. AirTAC replaced this with the SAU50X270 direct replacement, matching the exact bore, stroke, force, port and SC-series mounting. The extruded aluminium profile is more compact than an ISO 15552 cylinder of the same bore.
Because this SKU lacks a magnet, it cannot accept a sensor. The SAU50X270 upgrade uses current CMSG/DMSG/EMSG switches for -S variants, plus a new SAUF built-in-valve option. Note: 270mm is a nonstandard stroke.
| Model | Airtac SU32~50 Standard Cylinder SU50X270 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X270 |
| 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 SAU50X270 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 SAU50X270 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 medium-weight cartons off a belt line using the 982N push force at 0.5MPa, fitting neatly into existing SC-series bracket spaces.
Acts as a 270mm travel stop for pallets, safely decelerating loads at stroke end via the 21mm adjustable air cushions.
To replace the SU50X270, order the SAU50X270. Verify the 50mm bore, 270mm stroke, 1/4" port, M16x1.5 rod thread and SC-series mounting. This non-magnetic SKU cannot take a switch; if sensing is needed, order the SAU50X270S and use CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B. For sizing, the 40mm bore yields 628N push at 0.5MPa, while the 63mm bore yields 1559N. A plain cylinder drifts on air loss, so use an external rod lock or pilot-operated check valve for held loads. At 270mm, guide the rod to prevent side-load bending.
Replacement checklist
Yes, the SU50X270 is discontinued. The direct replacement is the AirTAC SAU50X270. It shares the same 50mm bore, 270mm stroke, 982N force, 1/4" port and SC-series mounting, so it drops right into the same application.
It delivers 982N push and 825N pull at 0.5MPa, 1374N push at 0.7MPa, and a 200kgf theoretical max at 1.0MPa. This specific non-S SKU has no magnet and cannot take a sensor; the SAU replacement uses CMSG/DMSG/EMSG switches for magnetic variants.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X270 replacement — usually within 7-8 hours.