This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X450S, 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 SU50X450S is a double-acting profile-type standard cylinder with a Ø50mm bore and 450mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X450S, which matches its bore, stroke, force and mounting.
The AirTAC SU50X450S is a discontinued double-acting profile cylinder with a 50mm bore and 450mm stroke. Delivering 982N push force at 0.5MPa, its direct replacement is the SAU50X450S, matching the 1/4" port, M16x1.5 rod thread, and SC-series mounts. The extruded aluminum body is more compact than an ISO 15552 cylinder of the same bore.
The -S magnet on this legacy unit works with CS1-B/DS1-B switches, whereas the SAU replacement uses current CMSG/DMSG/EMSG sensors. The SAU line also introduces the SAUF built-in 4M solenoid valve option, which the SU series lacked.
| Model | Airtac SU32~50 Standard Cylinder SU50X450S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X450S |
| Bore size | Ø50 mm |
| Stroke | 450 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 SAU50X450S 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 SAU50X450S 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. |
| ×450 | 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.
Applies up to 1374N at 0.7MPa for light stamping or holding fixtures, requiring external guides to manage the 450mm rod extension.
To replace this SU50X450S, order the SAU50X450S direct equivalent, verifying the 50mm bore, 450mm stroke, 1/4" port, and PT/G/NPT thread choice. Retain your SC-series mounting accessories, as they fit the identical profile body. Because this SKU includes the -S magnet, note the sensor family change: legacy CS1-B/DS1-B switches must be upgraded to CMSG/DMSG/EMSG on the new SAU. For neighboring bores, a 40mm provides 628N push while a 63mm yields 1559N at 0.5MPa. Given the 450mm stroke, use external guides to prevent rod bending and side-load wear. The air cushion only decelerates the piston; it does not hold load on air loss, so add an external rod lock or pilot-operated check valve for suspended loads. If you need self-switching, explore the SAUF valve-integrated variant.
Replacement checklist
Yes, the SU50X450S is discontinued. The direct replacement is the AirTAC SAU50X450S. It shares the same 50mm bore, 450mm stroke, 982N output force at 0.5MPa, 1/4" port, and SC-series mounting compatibility. You simply order the SAU equivalent.
This double-acting cylinder pushes 982N and pulls 825N at 0.5MPa, pushes 1374N at 0.7MPa, and reaches a theoretical max of 200kgf at 1.0MPa. The -S magnet on this legacy model requires CS1-B/DS1-B switches; the SAU replacement upgrades to CMSG/DMSG/EMSG sensors.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X450S replacement — usually within 7-8 hours.