This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X210S, 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 SU50X210S is a double-acting profile-type standard cylinder with a Ø50mm bore and 210mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X210S, which matches its bore, stroke, force and mounting.
The AirTAC SU50X210S is a discontinued double-acting profile cylinder with a 50mm bore and 210mm stroke. Delivering 982N push and 825N pull at 0.5MPa, its direct replacement is the SAU50X210S. You get the same extruded aluminium body, 1/4" port, M16x1.5 rod thread and SC-series mounting compatibility, ensuring a seamless swap without mechanical changes.
This compact profile body is shorter than an ISO 15552 cylinder of the same bore. Note the -S magnet on this legacy unit works with older CS1-B/DS1-B switches, whereas the SAU replacement uses current CMSG/DMSG/EMSG sensors and introduces a SAUF built-in-valve option the SU line lacked.
| Model | Airtac SU32~50 Standard Cylinder SU50X210S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X210S |
| Bore size | Ø50 mm |
| Stroke | 210 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 SAU50X210S 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 SAU50X210S 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. |
| ×210 | 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.
Functions as a robust stop gate in material handling zones, utilising the compact 50mm profile to save space in tight conveyor frameworks.
To replace this SU50X210S, order the SAU50X210S. Verify your 1/4" port, M16x1.5 rod thread, PT/G/NPT thread standard, and SC-series mounting (LB/FA/FB/CA/CB). Because this SKU has the -S magnet, you must upgrade your sensors: the old CS1-B/DS1-B switches are replaced by CMSG/DMSG/EMSG switches on the SAU. If you need self-switching, explore the SAUF variant with its built-in 4M solenoid valve. For sizing both ways, a 40mm bore provides 628N push at 0.5MPa, while a 63mm bore yields 1559N. Remember, a plain cylinder drifts without live air; the cushion only decelerates. For load holding on vertical applications, install an external rod lock or pilot-operated check valve. At a 210mm stroke, side-load alignment is manageable, but always guide the load to prevent rod bending.
Replacement checklist
Yes, the AirTAC SU50X210S is discontinued. The direct replacement is the SAU50X210S. It matches the 50mm bore, 210mm stroke, 982N force, 1/4" port and SC-series mounting, but requires upgrading your -S magnet sensors from the legacy CS1-B/DS1-B to the current CMSG/DMSG/EMSG family.
This double-acting cylinder operates at 0.15-1.0 MPa (proof 1.5 MPa) with speeds of 30-800 mm/s. It delivers 982N push and 825N pull at 0.5MPa, 1374N push at 0.7MPa, and a theoretical max of 200 kgf at 1.0MPa. The 1/4" port, M16x1.5 rod thread, and 21mm adjustable cushions are fixed by the 50mm bore.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X210S replacement — usually within 7-8 hours.