This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU100X20S, 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 SU100X20S is a double-acting profile-type standard cylinder with a Ø100mm bore and 20mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU100X20S, which matches its bore, stroke, force and mounting.
The AirTAC SU100X20S is a discontinued double-acting profile-type cylinder. Built with an extruded aluminum barrel, it is more compact than an ISO 15552 unit of the same bore, sharing AirTAC SC-series mounting accessories. Delivering a robust 3927 N push force at 0.5 MPa, it features a 1/2" port and a 29 mm adjustable air cushion at both ends.
The direct replacement is the SAU100X20S, matching the 100 mm bore, 20 mm stroke, output force, and port size. The SAU upgrade introduces current CMSG/DMSG/EMSG sensors, replacing the legacy CS1-B/DS1-B switches used on this -S model, and offers a new SAUF built-in-valve variant.
| Model | Airtac SU63-100 Standard Cylinder SU100X20S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU100X20S |
| Bore size | Ø100 mm |
| Stroke | 20 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 SAU100X20S 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 SAU100X20S 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. |
| ×20 | 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 heavy steel fabrications in machining fixtures, utilizing the 3927 N push force at 0.5 MPa for rigid holding.
Punches finished parts out of molds on automated lines, where the compact 20 mm stroke and 801 kgf peak capacity deliver rapid separation.
Halts loaded pallets at conveyor checkpoints, absorbing kinetic energy through the 29 mm adjustable air cushions at both ends.
To replace this SU100X20S with the SAU100X20S, verify the 100 mm bore, 20 mm stroke, 1/2" port, and M20x1.5 rod thread. Because this SKU includes a magnet (-S), note the sensor family changes from CS1-B/DS1-B to CMSG/DMSG/EMSG. If downsizing is possible, an 80 mm bore yields 2513 N push at 0.5 MPa; if upsizing, there is no larger standard option. A plain cylinder does not hold load without live air—the cushion only decelerates—so add an external rod lock or pilot-operated check valve for suspended loads. For short 20 mm strokes, side-load and rod-bending risks are minimal, but ensure rigid SC-series mounting to handle the 801 kgf maximum theoretical force.
Replacement checklist
Yes, the SU100X20S is discontinued. The direct replacement is the SAU100X20S, which maintains the same 100 mm bore, 20 mm stroke, 1/2" port, output force, and SC-series mounting. The SAU body also introduces a built-in 4M solenoid valve option (SAUF) that the SU line lacked.
It delivers 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, and a theoretical max of 801 kgf at 1.0 MPa. Because this is an -S model, it has a piston magnet for legacy CS1-B/DS1-B switches; when upgrading to the SAU100X20S, you must switch to the current CMSG/DMSG/EMSG sensor family.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU100X20S replacement — usually within 7-8 hours.