This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X50SCA, 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 SU32~50 Standard Cylinder SU50X50SCA is a double-acting profile-type standard cylinder with a Ø50mm bore and 50mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X50SCA, which matches its bore, stroke, force and mounting.
The AirTAC SU50X50SCA is a discontinued double-acting profile-type cylinder with a 50mm bore, 50mm stroke, and a CA mounting interface. Delivering 982N push force at 0.5MPa via a 1/4" port, its extruded aluminum barrel is more compact than same-bore ISO cylinders. AirTAC replaced this unit with the SAU50X50SCA, a direct upgrade retaining the exact body, force, port, and SC-series mounting.
The SAU50X50SCA swap introduces current CMSG/DMSG/EMSG sensors, replacing the legacy CS1-B/DS1-B switches used on this SU's magnet. The SAU line also adds a SAUF valve-integrated option. Note that the cushion only decelerates; use an external rod lock for load holding.
| Model | Airtac SU32~50 Standard Cylinder SU50X50SCA |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X50SCA |
| Bore size | Ø50 mm |
| Stroke | 50 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 SAU50X50SCA 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 SAU50X50SCA 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. |
| ×50 | 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.
Ideal for securing mid-weight parts during machining, utilizing the 982N push force at 0.5MPa with the rigid CA foot mount.
Drives short-stroke routing gates on production lines, where the compact 50mm profile body saves space without sacrificing power.
Acts as a reliable pneumatic stop mechanism for 50kg pallet loads, benefiting from the 21mm adjustable end cushions.
To replace this SU50X50SCA, order the SAU50X50SCA and verify your 50mm bore, 50mm stroke, 1/4" port, M16x1.5 rod thread, and CA mount. Because this SKU includes a magnet (-S), you must upgrade your legacy CS1-B/DS1-B switches to CMSG/DMSG/EMSG sensors. If sizing alternatives, the neighboring 40mm bore yields 628N push at 0.5MPa, while the 63mm bore provides 1559N. A plain cylinder drifts without live air, so install a pilot-operated check valve or rod lock for suspended loads. For self-switching needs, consider the SAUF built-in-valve variant. At 50mm stroke, rod bending is negligible, but always guide the load to prevent side-loading.
Replacement checklist
Yes, the SU50X50SCA is discontinued. The direct replacement is the SAU50X50SCA. It shares the same 50mm bore, 50mm stroke, 982N force, 1/4" port, and CA mounting, so it bolts right in. The only change is that the SAU uses CMSG/DMSG/EMSG sensors instead of the older CS1-B/DS1-B switches.
The 50mm bore uses a 1/4" port. At 0.5MPa it provides 982N push and 825N pull force. At 0.7MPa push is 1374N, and at 0.9MPa it is 1767N. The theoretical maximum force is 200kgf at 1.0MPa. Operating speed ranges from 30-800mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X50SCA replacement — usually within 7-8 hours.