This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU100X225SFA, 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 SU100X225SFA is a double-acting profile-type standard cylinder with a Ø100mm bore and 225mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU100X225SFA, which matches its bore, stroke, force and mounting.
The AirTAC SU100X225SFA is a discontinued double-acting profile-type cylinder with a 100mm bore and 225mm stroke. Built with an extruded aluminium barrel, it is more compact than an ISO 15552 unit of the same bore and shares AirTAC SC-series mounting.
The direct replacement is the SAU100X225SFA, matching the 100mm bore, 225mm stroke, 1/2" port, M20x1.5 rod thread and FA mounting. The SAU upgrade introduces current CMSG/DMSG/EMSG sensors to replace this unit's legacy CS1-B/DS1-B switches, and offers a new SAUF built-in-valve variant the SU line lacked. Body, force and SC-series mounting remain unchanged.
| Model | Airtac SU63-100 Standard Cylinder SU100X225SFA |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU100X225SFA |
| Bore size | Ø100 mm |
| Stroke | 225 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 SAU100X225SFA 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 SAU100X225SFA 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. |
| ×225 | 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 stacks requiring high thrust, using the 3927 N push force at 0.5 MPa to form thick sheet metal reliably.
Actuates a heavy diverter arm on a high-throughput line, relying on the compact profile body and FA foot mount for rigid support.
To replace this SU100X225SFA, order the SAU100X225SFA direct equivalent. Confirm the 100mm bore, 225mm stroke, 1/2" port (default PT thread), M20x1.5 rod thread and the SC-series FA foot mount interface. Because this SKU includes the -S magnet, note that your legacy CS1-B/DS1-B switches must change to the SAU's CMSG/DMSG/EMSG sensor family. For sizing both ways: a neighbouring 80mm bore provides 2513 N push at 0.5 MPa, while stepping up is unnecessary if 3927 N suffices. For any stroke of 300mm or more, ensure external guide rails to prevent rod bending under side loads. A plain cylinder drifts on air loss; the 29mm adjustable cushions only decelerate near stroke end. For load holding, fit an external rod lock or pilot-operated check valve. If self-switching is needed, explore the SAUF valve-integrated option.
Replacement checklist
Yes, the AirTAC SU100X225SFA is discontinued. The direct replacement is the SAU100X225SFA. It matches the 100mm bore, 225mm stroke, 1/2" port, output force and SC-series FA mounting. The SAU body is identical, but if your SU has the -S magnet, you must upgrade from legacy CS1-B/DS1-B switches to the current CMSG/DMSG/EMSG sensors.
This double-acting cylinder has a 1/2" air port and a 25mm piston rod. It delivers 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, and a theoretical maximum of 801 kgf at 1.0 MPa. The 29mm adjustable air cushions at both ends decelerate the load near stroke end, but an external rod lock is required to hold a load safely.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU100X225SFA replacement — usually within 7-8 hours.