This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU100X55S, 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 SU100X55S is a double-acting profile-type standard cylinder with a Ø100mm bore and 55mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU100X55S, which matches its bore, stroke, force and mounting.
The AirTAC SU100X55S is a discontinued double-acting profile-type cylinder with a 100mm bore and 55mm stroke. Delivering 3927N push force at 0.5MPa, its direct replacement is the SAU100X55S, retaining the same body, 1/2" port, and SC-series mounting.
Because this SKU includes a magnet (-S), it originally used legacy CS1-B/DS1-B switches, but the SAU replacement upgrades you to current CMSG/DMSG/EMSG sensors. The SAU family also introduces a SAUF variant with a built-in 4M solenoid valve that the SU line never offered. The standard air cushion only decelerates the piston near stroke end; use an external rod lock or pilot-operated check valve if you need to hold a load on air loss.
| Model | Airtac SU63-100 Standard Cylinder SU100X55S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU100X55S |
| Bore size | Ø100 mm |
| Stroke | 55 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 SAU100X55S 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 SAU100X55S 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. |
| ×55 | 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-duty stamping and forming dies requiring substantial push force and robust 25mm rod rigidity.
Secures large fabricated components during machining or welding operations using high clamping pressure.
To replace this SU100X55S, order the SAU100X55S, confirming the 100mm bore, 55mm stroke, 1/2" port, M20x1.5 rod thread, and SC-series mounting are identical. If sizing down, a 80mm bore provides 2513N push at 0.5MPa; if sizing up, there is no larger standard profile bore. Because this is a -S model, note the sensor family changes from CS1-B/DS1-B to CMSG/DMSG/EMSG. For any stroke over 300mm, add external guide rails to prevent rod bending under side loads. If you need self-switching without external plumbing, consider the SAUF valve-integrated option. Remember, a plain cylinder drifts without live air; the cushion decelerates but does not lock the load.
Replacement checklist
Yes, the AirTAC SU100X55S is discontinued. The direct replacement is the SAU100X55S. It offers identical bore, stroke, output force, 1/2" port, and SC-series mounting compatibility, so it fits the same application directly.
At 0.5MPa it pushes 3927N and pulls 3681N; at 0.7MPa it pushes 5497N, with a theoretical max of 801kgf at 1.0MPa. The -S suffix means it has a magnet for legacy CS1-B/DS1-B switches; the SAU replacement requires current CMSG/DMSG/EMSG sensors.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU100X55S replacement — usually within 7-8 hours.