This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU100X250S, 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 SU100X250S is a double-acting profile-type standard cylinder with a Ø100mm bore and 250mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU100X250S, which matches its bore, stroke, force and mounting.
The AirTAC SU100X250S is a discontinued double-acting profile-type cylinder featuring a 100mm bore, 250mm stroke, and a built-in magnet for position sensing. Delivering 3927 N of push force at 0.5 MPa, it utilizes an extruded aluminum barrel that is more compact than an ISO 15552 cylinder of the same size. The direct replacement is the SAU100X250S, matching the 1/2" port, M20x1.5 rod thread, and SC-series mounting.
When upgrading to the SAU100X250S, the body, bore, stroke, and force remain identical, but the legacy CS1-B/DS1-B switches are replaced by the current CMSG/DMSG/EMSG sensor family. The SAU line also introduces a SAUF variant with a built-in 4M solenoid valve, an option the SU series never had.
| Model | Airtac SU63-100 Standard Cylinder SU100X250S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU100X250S |
| Bore size | Ø100 mm |
| Stroke | 250 mm |
| Acting type | Double acting |
| Port size | 1/2" |
| 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, 29 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAU100X250S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAU100X250S 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). |
|---|---|
| 100 | Bore size in mm. |
| ×250 | 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.
Drives heavy tooling and stamping dies requiring up to 3927 N of push force at 0.5 MPa, utilizing the 250mm stroke to clear large workpieces safely.
Actuates heavy routing gates on high-capacity conveyor lines, relying on the compact profile body and adjustable 29mm air cushions to absorb kinetic energy.
To replace the discontinued SU100X250S, order the SAU100X250S direct equivalent, verifying the 100mm bore, 250mm stroke, 1/2" port (default PT thread), and SC-series mounting hardware are retained. Because this SKU includes the -S magnet, you must account for the sensor family change: the older CS1-B/DS1-B switches will not fit the SAU groove, requiring an upgrade to CMSG/DMSG/EMSG sensors. Sizing both ways, a neighboring 80mm bore provides 2513 N push at 0.5 MPa, while stepping up is unnecessary if 3927 N suffices. Note that a plain cylinder does not hold load on air loss—the 29mm adjustable cushions only decelerate near stroke end, so use an external rod lock or pilot-operated check valve for secure holding. At a 250mm stroke, ensure adequate guidance to prevent rod bending under side loads. If self-switching is desired, explore the SAUF valve-integrated option.
Replacement checklist
Yes, the AirTAC SU100X250S is discontinued and end-of-life. The direct replacement is the SAU100X250S. It features the same 100mm bore, 250mm stroke, 3927 N output force at 0.5 MPa, 1/2" port, and SC-series mounting compatibility, fitting the exact same application footprint.
At 0.5 MPa it provides 3927 N push and 3681 N pull force, increasing to 5497 N push at 0.7 MPa, with a theoretical maximum of 801 kgf at 1.0 MPa. Because this is an -S magnet model, note that the legacy CS1-B/DS1-B switches are obsolete; the SAU100X250S replacement requires the current CMSG/DMSG/EMSG sensor family.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU100X250S replacement — usually within 7-8 hours.