This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU100X250FA, 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 SU100X250FA 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 SAU100X250FA, which matches its bore, stroke, force and mounting.
The AirTAC SU100X250FA is a discontinued double-acting profile-type cylinder with a 100mm bore and 250mm stroke. It delivers a 3927N push force at 0.5MPa. AirTAC replaced it with the SAU100X250FA, a direct upgrade sharing the same extruded aluminium body, 1/2" port, M20x1.5 rod thread and SC-series FA mounting accessories.
This compact profile body is shorter than an equivalent ISO 15552 unit. This SKU lacks a magnet, so it cannot accept sensors; the SAU family also adds a SAUF valve-integrated option and uses CMSG/DMSG/EMSG switches for -S variants.
| Model | Airtac SU63-100 Standard Cylinder SU100X250FA |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU100X250FA |
| 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 SAU100X250FA 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 SAU100X250FA 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.
Secures large metal castings in machining fixtures using the 3927N push force at 0.5MPa.
Shifts heavy injection mould tools between stations via the FA foot mount and 1/2" port.
To replace this SU100X250FA, order the SAU100X250FA keeping the 100mm bore, 250mm stroke, 1/2" port and FA foot mount. Because this specific SKU has no magnet, it cannot support sensing. If sensing is required on the new unit, an -S SAU model uses CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B. Sizing both ways: dropping to an 80mm bore gives 2513N push at 0.5MPa, while a 100mm bore at 0.7MPa yields 5497N. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock for held loads. At 250mm stroke, guide rods prevent side-load bending.
Replacement checklist
Yes, the SU100X250FA is discontinued. The direct replacement is the SAU100X250FA, matching the 100mm bore, 250mm stroke, 1/2" port, force and SC-series FA mounting.
It delivers 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, and a max of 801kgf at 1.0MPa. This SKU has no magnet and cannot take sensors; SAU -S variants use CMSG/DMSG/EMSG switches.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU100X250FA replacement — usually within 7-8 hours.