This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU32X1550S, 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 SU32X1550S is a double-acting profile-type standard cylinder with a Ø32mm bore and 1550mm stroke, 1/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU32X1550S, which matches its bore, stroke, force and mounting.
The AirTAC SU32X1550S is a discontinued double-acting profile-type cylinder with a 32mm bore and 1550mm stroke. Because 1550mm exceeds the 1000mm standard maximum for this bore, it is a non-standard, made-to-order unit.
The direct replacement is the SAU32X1550S, matching the exact bore, stroke, force, 1/8" port, and SC-series mounting. Two key upgrades exist: the SAU uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches on this -S model, and the SAU line offers a SAUF variant with a built-in 4M solenoid valve the SU lacked.
| Model | Airtac SU32~50 Standard Cylinder SU32X1550S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU32X1550S |
| Bore size | Ø32 mm |
| Stroke | 1550 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 1000 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAU32X1550S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The SAU32X1550S 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). |
|---|---|
| 32 | Bore size in mm. |
| ×1550 | 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.
Extracts totes from deep shelving racks where the compact profile body saves space compared to standard ISO cylinders.
Shifts small parts between parallel processing stations, requiring external guide rails to support the extended 12mm rod.
To replace this SU32X1550S, order the SAU32X1550S, confirming the 32mm bore, 1550mm non-standard stroke, 1/8" port, M10x1.25 rod thread, and SC-series mounting. If sizing alternatives, the neighbouring 40mm bore provides 628N push at 0.5MPa. For the -S magnet, note the sensor family changes from CS1-B/DS1-B to CMSG/DMSG/EMSG. At 1550mm, the 12mm rod is highly susceptible to bending; you must use external guides to prevent side-load damage. This cylinder will not hold a load without live air—the cushion only decelerates—so add an external rod lock or pilot-operated check valve for holding. If valve integration is needed, consider the SAUF variant.
Replacement checklist
Yes, the SU32X1550S is discontinued. The direct replacement is the SAU32X1550S, offering identical bore, stroke, force, 1/8" port, and SC-series mounting. The 1550mm stroke remains a non-standard made-to-order size.
It delivers 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, and a theoretical max of 82kgf at 1.0MPa. The -S magnet on this legacy SU works with 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 SAU32X1550S replacement — usually within 7-8 hours.