This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ32X250-50S, 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 SUJ Adjustable Cylinder SUJ32X250-50S is a double-acting profile-type standard cylinder with a Ø32mm bore and 250mm stroke, 1/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ32X250-50S, which matches its bore, stroke, force and mounting.
The AirTAC SUJ32X250-50S is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 50 mm on-site, yielding a usable 200-250 mm extend out of the 250 mm nominal maximum. It features a 1/8" port, a Ø12 mm rod, and 21 mm adjustable air cushions at each end.
This SUJ32X250-50S unit is discontinued; the direct replacement is the SAUJ32X250-50S, which retains the same bore, stroke, force, 1/8" port, and FA/LB mounting. The stop screw sets the end position but is not a load lock; drift occurs on air loss. The SAUJ upgrade adopts current CMSG/DMSG/EMSG sensors, replacing the legacy CS1-B/DS1-B switches used here.
| Model | Airtac SUJ Adjustable Cylinder SUJ32X250-50S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ32X250-50S |
| Bore size | Ø32 mm |
| Stroke | 250 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 SAUJ32X250-50S 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 SAUJ32X250-50S 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. |
| ×250 | 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.
Tuning the extend stroke on-site by up to 50 mm to push parts of varying widths into a fixture without reprogramming the PLC.
Dialing in the exact 200-250 mm extend end position for a light press operation, allowing precise mechanical stops for repeatable contact.
Setting the extend reach on a sorting arm to accommodate different product box sizes on the fly using the external stop screw.
To replace the discontinued SUJ32X250-50S, order the direct replacement SAUJ32X250-50S, matching the 32 mm bore, 250 mm max stroke, 50 mm adjust window, and 1/8" port. The 50 mm adjust window is ideal if your end position needs field tuning between 200 and 250 mm. Mounting uses FA or LB brackets (SC-series compatible). Because this model has the -S magnet, you must switch from legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches on the SAUJ. For stroke lengths of 300 mm or greater, verify side-load limits to prevent rod binding.
Replacement checklist
Yes, the SUJ32X250-50S is discontinued. The direct replacement is the SAUJ32X250-50S, which matches the 32 mm bore, 250 mm max stroke, 50 mm adjust window, 1/8" port, and FA/LB mounting. The SAUJ uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
The external stop screw provides a 50 mm adjust window, allowing you to shorten the extend stroke from the 250 mm nominal maximum down to 200 mm. The stop sets end position but does not lock the load.
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ32X250-50S replacement — usually within 7-8 hours.