This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X500, 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 SU50X500 is a double-acting profile-type standard cylinder with a Ø50mm bore and 500mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X500, which matches its bore, stroke, force and mounting.
The AirTAC SU50X500 is a discontinued double-acting profile-type cylinder with a 50mm bore and 500mm stroke. It delivers 982 N push and 825 N pull at 0.5 MPa, making it a robust mid-range actuator. AirTAC replaced this legacy unit with the SAU50X500 direct replacement, matching the exact bore, stroke, output force, 1/4" port and SC-series mounting accessories.
Because this SKU lacks a magnet, it cannot accept a sensor. The SAU upgrade introduces CMSG/DMSG/EMSG switch compatibility for its -S variants and a new SAUF built-in 4M valve option the SU line never had. The extruded aluminum profile is more compact than an ISO 15552 cylinder of the same bore.
| Model | Airtac SU32~50 Standard Cylinder SU50X500 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X500 |
| Bore size | Ø50 mm |
| Stroke | 500 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 SAU50X500 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 SAU50X500 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. |
| ×500 | 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.
Pushes medium-weight cartons off a sorting line using the 982 N push force at 0.5 MPa over the 500mm travel distance.
Acts as a retractable physical stop for inbound pallets, benefiting from the compact profile body and SC-series foot mounts.
To replace this discontinued actuator, order the SAU50X500 direct equivalent, verifying the 1/4" port, M16x1.5 rod thread, and PT/G/NPT thread choice. Since this specific SKU has no magnet, it cannot support sensing; if you need position detection, upgrade to an SAU50X500S and use current CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B. Sizing down, a 40mm bore yields 628 N push at 0.5 MPa; sizing up, a 63mm bore provides 1559 N. The 500mm stroke requires an external guide to prevent rod bending under side loads. For load holding on air loss, add an external rod lock or pilot-operated check valve, as cushions only decelerate.
Replacement checklist
Yes, the AirTAC SU50X500 is discontinued and end-of-life. The direct replacement is the SAU50X500, which shares the same 50mm bore, 500mm stroke, output force, 1/4" port, and SC-series mounting accessories.
It provides 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and a theoretical max of 200 kgf at 1.0 MPa. The cylinder cannot hold a load without live air; the adjustable cushions only decelerate the piston near stroke end. Use an external rod lock or pilot-operated check valve for secure load holding.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X500 replacement — usually within 7-8 hours.