This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X100, 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 SU32~50 Standard Cylinder SU50X100 is a double-acting profile-type standard cylinder with a Ø50mm bore and 100mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X100, which matches its bore, stroke, force and mounting.
The AirTAC SU50X100 is a discontinued double-acting profile-type cylinder featuring a 50mm bore and 100mm stroke. Built with an extruded aluminum barrel, it is more compact than an ISO 15552 unit of the same bore while delivering 982 N of push force at 0.5 MPa. AirTAC replaced this legacy unit with the SAU50X100, a direct upgrade retaining the exact body dimensions, 1/4" port, M16x1.5 rod thread, and SC-series mounting compatibility.
When migrating to the SAU50X100, your mechanical envelope and output force remain identical. Note that this non-magnetic SKU cannot accept a sensor, and the SAU family introduces a SAUF variant with a built-in 4M solenoid valve that the SU line never offered.
| Model | Airtac SU32~50 Standard Cylinder SU50X100 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X100 |
| Bore size | Ø50 mm |
| Stroke | 100 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M16×1.5 |
| 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, 21 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAU50X100 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAU50X100 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). |
|---|---|
| 50 | Bore size in mm. |
| ×100 | 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.
Actuates routing gates on 50 kg class packaging lines, utilizing the 100mm stroke to redirect boxes smoothly between conveyor belts.
Functions as a compact pneumatic stop for lightweight pallets, relying on the 982 N push force at 0.5 MPa to halt inbound inventory securely.
Drives short-stroke clamping fixtures on machining stations, where the extruded profile body saves space compared to older ISO standards.
To replace the discontinued SU50X100, order the SAU50X100 and verify your 1/4" port thread (PT, G, or NPT) along with your SC-series mounting hardware (LB, FA, FB, CA, CB, or TC). Because this specific SKU lacks a magnet (-S), it cannot support position sensing; if you require switches on the new unit, the SAU uses current CMSG/DMSG/EMSG sensors rather than the legacy CS1-B/DS1-B type. Sizing both ways: dropping to a 40mm bore yields 628 N push at 0.5 MPa, while stepping up to a 63mm bore provides 1559 N. Remember that a standard cylinder drifts without live air—the cushions only decelerate at stroke end—so fit an external rod lock or pilot-operated check valve for secure load holding.
Replacement checklist
Yes, the SU50X100 is end-of-life. The direct replacement is the AirTAC SAU50X100. It matches the original 50mm bore, 100mm stroke, 982 N output force, 1/4" port, and SC-series mounting footprint, so no mechanical redesign is required.
This 50mm bore double-acting cylinder features a 1/4" air port and an M16x1.5 piston rod. It generates 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and a theoretical maximum of 200 kgf at 1.0 MPa. Because this SKU lacks a magnet, it cannot accept position switches.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X100 replacement — usually within 7-8 hours.