This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU63X720S, 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 Airtac SU63-100 Standard Cylinder SU63X720S is a double-acting profile-type standard cylinder with a Ø63mm bore and 720mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU63X720S, which matches its bore, stroke, force and mounting.
The AirTAC SU63X720S is a discontinued double-acting profile-type cylinder with a 63mm bore and 720mm stroke. It delivers 1559N push and 1402N pull at 0.5MPa, using a 20mm rod and 3/8" port. The direct replacement is the SAU63X720S, matching the bore, stroke, force, port and SC-series mounting.
The SAU upgrade switches the legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches, and introduces the SAUF built-in-valve variant. The extruded aluminum profile is more compact than an ISO 15552 cylinder of the same bore.
| Model | Airtac SU63-100 Standard Cylinder SU63X720S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU63X720S |
| Bore size | Ø63 mm |
| Stroke | 720 mm |
| Acting type | Double acting |
| Port size | 3/8" |
| 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 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAU63X720S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAU63X720S 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). |
|---|---|
| 63 | Bore size in mm. |
| ×720 | 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 on a conveyor line using the 1559N thrust at 0.5MPa, with external guides supporting the 720mm extension.
Opens and closes heavy machine safety doors over a 720mm span, relying on the adjustable 21mm cushions to decelerate the 63mm bore at stroke ends.
To replace this SU63X720S, order the SAU63X720S. Confirm the 3/8" port, M16x1.5 rod thread, and SC-series mounting (LB/FA/FB/CA/CB) are identical. Because this has an -S magnet, note that your legacy CS1-B/DS1-B switches must change to CMSG/DMSG/EMSG sensors on the SAU. At 720mm, this long stroke risks rod bending under side loads, so use external guides to prevent damage. If sizing alternatives, a 50mm bore gives 982N push while an 80mm bore gives 2513N at 0.5MPa. The cushion only decelerates; it does not hold load on air loss, so add an external rod lock or pilot-operated check valve for suspended loads. For faster cycling, consider the SAUF valve-integrated variant.
Replacement checklist
Yes, the AirTAC SU63X720S is discontinued. The direct replacement is the SAU63X720S. It shares the same 63mm bore, 720mm stroke, 1559N force at 0.5MPa, 3/8" port, and SC-series mounting. You must upgrade your -S magnet sensors from the legacy CS1-B/DS1-B to the current CMSG/DMSG/EMSG family.
The 63mm bore has a 3/8" port. It generates 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, 2805N push at 0.9MPa, and a theoretical maximum of 318kgf at 1.0MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU63X720S replacement — usually within 7-8 hours.