This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU80X270S, 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 SU63-100 Standard Cylinder SU80X270S is a double-acting profile-type standard cylinder with a Ø80mm bore and 270mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU80X270S, which matches its bore, stroke, force and mounting.
The AirTAC SU80X270S is a discontinued double-acting profile-type cylinder featuring an 80mm bore and 270mm stroke. It delivers 2513N push force at 0.5MPa. The direct replacement is the SAU80X270S, retaining the exact same body, 3/8" port, M20x1.5 rod thread, and SC-series mounting dimensions.
The SAU upgrade introduces CMSG/DMSG/EMSG sensors to replace the legacy CS1-B/DS1-B switches on this -S model, and adds a SAUF built-in-valve option the SU line lacked. Note that air cushions only decelerate; use a rod lock to hold loads.
| Model | Airtac SU63-100 Standard Cylinder SU80X270S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU80X270S |
| Bore size | Ø80 mm |
| Stroke | 270 mm |
| Acting type | Double acting |
| Port size | 3/8" |
| Rod thread | M20×1.5 |
| 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, 28 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAU80X270S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAU80X270S 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). |
|---|---|
| 80 | 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 heavy pallets sideways off a main conveyor line using the 2513N thrust at 0.5MPa without needing high-pressure air.
Secures heavy steel workpieces in a machining fixture, providing stable 3518N clamping force at 0.7MPa.
To replace this SU80X270S, order the SAU80X270S keeping the 80mm bore, 270mm stroke, and 3/8" port. Because this is an -S model, you must switch from the old CS1-B/DS1-B switches to the current CMSG/DMSG/EMSG sensors. If your application needs self-switching, the SAUF variant adds a built-in 4M valve the SU lacked. For sizing alternatives, a 63mm bore gives 1559N push at 0.5MPa, while a 100mm bore yields 3927N. At 270mm stroke, ensure guide rails carry side loads to prevent rod bending. A plain cylinder drifts on air loss; install a pilot-operated check valve for load holding.
Replacement checklist
Yes, the SU80X270S is discontinued. The direct replacement is the SAU80X270S. It matches the 80mm bore, 270mm stroke, 2513N force, 3/8" port, and SC-series mounting. You simply order the SAU equivalent.
It delivers 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, and a 513kgf max at 1.0MPa. Because this is an -S model, the legacy CS1-B/DS1-B switches are obsolete; the SAU replacement uses CMSG/DMSG/EMSG sensors.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU80X270S replacement — usually within 7-8 hours.