This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU80X900S, 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 SU80X900S is a double-acting profile-type standard cylinder with a Ø80mm bore and 900mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU80X900S, which matches its bore, stroke, force and mounting.
The AirTAC SU80X900S is a discontinued double-acting profile cylinder featuring an 80mm bore, 900mm stroke, and a built-in piston magnet. Generating 2513 N of push force at 0.5 MPa, it uses an extruded aluminum barrel that is shorter and more compact than an ISO 15552 cylinder of the same bore. The direct replacement is the SAU80X900S, matching the 3/8" port, M20x1.5 rod thread, output force, and SC-series mounting.
Two key upgrades exist on the SAU: the legacy CS1-B/DS1-B sensors are replaced by the current CMSG/DMSG/EMSG switch family, and the SAU line introduces the SAUF variant with a built-in 4M solenoid valve that the SU series lacked. The body, bore, stroke, and cushions remain unchanged.
| Model | Airtac SU63-100 Standard Cylinder SU80X900S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU80X900S |
| Bore size | Ø80 mm |
| Stroke | 900 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 SAU80X900S 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 SAU80X900S 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. |
| ×900 | 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 or workpieces across a 900mm gap with 2513 N of force at 0.5 MPa, requiring external guide rails to prevent rod deflection during the extended travel.
Actuates large totes or bins in automated retrieval systems, utilizing the compact profile body to save space while delivering enough thrust to shift heavy inventory loads.
Provides steady clamping or pressing force for heavy-duty component seating, relying on adjustable 28mm air cushions at both ends to decelerate the 25mm rod smoothly.
To replace this SU80X900S with the SAU80X900S, verify the 80mm bore, 900mm stroke, 3/8" port, and default PT threads. Because this is a 900mm stroke, you must support the load with external guides to prevent rod bending and side-load wear. The -S suffix indicates a piston magnet; note that your existing CS1-B/DS1-B switches will not fit the SAU, so you must upgrade to CMSG/DMSG/EMSG sensors. If sizing alternatives, a 63mm bore yields 1559 N push at 0.5 MPa, while a 100mm bore yields 3927 N. A plain cylinder drifts on air loss—the cushion only decelerates—so add an external rod lock or pilot-operated check valve for held loads. For faster cycling, consider the SAUF valve-integrated option.
Replacement checklist
Yes, the AirTAC SU80X900S is discontinued and end-of-life. The direct replacement is the SAU80X900S. It offers the same 80mm bore, 900mm stroke, 3/8" port, output force, and SC-series mounting compatibility, so it fits the same application directly.
At 0.5 MPa it pushes 2513 N and pulls 2268 N; at 0.7 MPa it pushes 3518 N, with a theoretical max of 513 kgf at 1.0 MPa. The -S suffix denotes a piston magnet for legacy CS1-B/DS1-B switches; the SAU replacement requires upgrading to CMSG/DMSG/EMSG sensors.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU80X900S replacement — usually within 7-8 hours.