This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ32X250-100S, 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 SUJ32X250-100S 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 SAUJ32X250-100S, which matches its bore, stroke, force and mounting.
The AirTAC SUJ32X250-100S is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 100 mm on-site, giving a usable extend range of 150-250 mm from the 250 mm nominal maximum. The stop screw sets the end position; it is not a load lock. This compact profile barrel is shorter than an ISO 15552 cylinder of the same bore. It features a 32 mm bore, a 12 mm rod, M10x1.25 rod thread, and a 1/8" port.
This discontinued SUJ model is replaced direct by the SAUJ32X250-100S, which retains the exact bore, stroke, force, port, and FA/LB mounting. The SAUJ upgrades the sensor system from the legacy CS1-B/DS1-B switches used here to current CMSG/DMSG/EMSG sensors.
| Model | Airtac SUJ Adjustable Cylinder SUJ32X250-100S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ32X250-100S |
| 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 SAUJ32X250-100S 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 SAUJ32X250-100S 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.
Trimming the extend stroke by up to 100 mm on-site allows precise positioning of pneumatic diverter gates without machining new hard stops.
Set the exact 150-250 mm extend depth for pressing or forming operations directly at the machine, accommodating different material thicknesses.
Field-tune the actuator reach on a sorting line to handle varying product lengths without swapping the entire cylinder assembly.
To replace the discontinued SUJ32X250-100S, order the exact direct replacement SAUJ32X250-100S, keeping the 32 mm bore, 250 mm nominal stroke, 100 mm adjust window, and 1/8" port. If resizing, the neighboring bores are 40 mm and 50 mm; at 0.5 MPa the 40 mm bore pushes 628 N and the 50 mm bore pushes 982 N, compared to 402 N here. Choose the 100 mm adjust window when you need field tuning over a wide 150-250 mm extend range. Mounting is compatible with AirTAC SC series FA and LB brackets. Because this model has the -S magnet, you must migrate position sensing from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches. For strokes of 300 mm or longer, verify side-load limits to prevent rod binding.
Replacement checklist
Yes, the AirTAC SUJ32X250-100S is discontinued. The direct replacement is the SAUJ32X250-100S. It matches the 32 mm bore, 250 mm stroke, 100 mm adjust window, 1/8" port, and FA/LB mounting. You must upgrade position sensing from legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors.
The external stop screw provides a 100 mm adjust window, allowing you to shorten the extend stroke from the 250 mm maximum down to 150 mm. The stop sets end position only; use an external rod lock for load holding.
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ32X250-100S replacement — usually within 7-8 hours.