This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X1500S, 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 SU50X1500S is a double-acting profile-type standard cylinder with a Ø50mm bore and 1500mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X1500S, which matches its bore, stroke, force and mounting.
The AirTAC SU50X1500S is a discontinued double-acting profile cylinder with a 50mm bore and a 1500mm stroke. Because 1500mm exceeds the 1200mm standard maximum for this bore, it is a non-standard, made-to-order unit. It delivers 982N push force at 0.5MPa via a 1/4" port. AirTAC replaced the SU line with the SAU family; the SAU50X1500S is the direct replacement, retaining the same body dimensions, output force, port size, and SC-series mounting.
This -S SKU includes a piston magnet for legacy CS1-B/DS1-B reed switches, but the SAU replacement upgrades this to current CMSG/DMSG/EMSG sensors. The SAU line also introduces a SAUF variant with a built-in 4M solenoid valve that the SU never offered.
| Model | Airtac SU32~50 Standard Cylinder SU50X1500S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X1500S |
| Bore size | Ø50 mm |
| Stroke | 1500 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 SAU50X1500S 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 SAU50X1500S 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. |
| ×1500 | 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 heavy packages across a wide 1500mm sorting belt using the 982N push force at 0.5MPa, requiring external guide rails to prevent rod bending over the extended length.
Moves 50kg workpieces between distant machining stations, relying on the 21mm adjustable air cushions at both ends to decelerate the load smoothly at stroke completion.
To replace this discontinued SU50X1500S, order the SAU50X1500S. Confirm the 50mm bore, 1500mm non-standard stroke, 1/4" port, M16x1.5 rod thread, and PT/G/NPT thread preference. Because this -S model uses legacy CS1-B/DS1-B switches, you must migrate to CMSG/DMSG/EMSG sensors on the SAU. If you need self-switching, explore the SAUF valve-integrated option. For forces, the 50mm bore yields 982N push at 0.5MPa; dropping to a 40mm bore gives 628N, while a 63mm bore provides 1559N. At 1500mm, side-load and rod-bending risks are high, so use external guides to prevent premature seal wear. A plain cylinder drifts on air loss—the cushion only decelerates—so add an external rod lock or pilot-operated check valve for load holding.
Replacement checklist
Yes, the SU50X1500S is discontinued. The direct replacement is the SAU50X1500S, which matches the 50mm bore, 1500mm stroke, 982N force, 1/4" port, and SC-series mounting. The 1500mm stroke is non-standard as it exceeds the 1200mm maximum for this bore.
At 0.5MPa it pushes 982N and pulls 825N; at 0.7MPa it pushes 1374N, with a theoretical max of 200kgf at 1.0MPa. Because this is an -S model, it has a magnet for legacy CS1-B/DS1-B switches; the SAU replacement requires upgrading to current CMSG/DMSG/EMSG sensors.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X1500S replacement — usually within 7-8 hours.