This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ32X250-20S, 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 SUJ32X250-20S 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 SAUJ32X250-20S, which matches its bore, stroke, force and mounting.
The AirTAC SUJ32X250-20S is a double-acting, double-rod profile cylinder with a 32 mm bore and 250 mm maximum stroke. An external stop screw lets you trim the extend stroke by up to 20 mm on-site, yielding a usable 230-250 mm extension window. The stop screw sets the end position and is not a load lock.
This SUJ32X250-20S unit is discontinued; the direct replacement is the SAUJ32X250-20S, retaining the same body, 12 mm rod, and FA/LB mounting. The legacy CS1-B/DS1-B sensors are replaced by current CMSG/DMSG/EMSG switches on the SAUJ.
| Model | Airtac SUJ Adjustable Cylinder SUJ32X250-20S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ32X250-20S |
| 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 SAUJ32X250-20S 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 SAUJ32X250-20S 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 final extend position by up to 20 mm on-site allows precise gripping of variable part widths without machining hard stops.
Trimming the extend stroke accommodates minor variations in conveyor lane width or product size, ensuring pushers contact parts accurately.
Field-adjusting the diverter stroke ensures packages of slightly different lengths are redirected smoothly without repositioning the cylinder.
To replace the discontinued SUJ32X250-20S, order the direct replacement SAUJ32X250-20S, keeping the 20 mm adjust window and -S magnet. Choose the 20 mm adjust window if your extend stroke needs field tuning between 230-250 mm. Mounting uses basic, FA, or LB brackets compatible with the AirTAC SC series. Because the -S magnet is present, upgrade your legacy CS1-B/DS1-B sensors to CMSG/DMSG/EMSG switches. For stroke lengths of 300 mm or more, verify side-load limits to prevent guide wear. The stop screw sets end position only; use an external rod lock for load holding.
Replacement checklist
Yes, the SUJ32X250-20S is discontinued. The direct replacement is the SAUJ32X250-20S, which matches the 32 mm bore, 250 mm stroke, 20 mm adjust window, 1/8" port, and FA/LB mounting. You must upgrade the legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches.
The external stop screw provides a 20 mm adjust window, allowing you to trim the nominal 250 mm extend stroke down to 230 mm on-site. The stop sets end position and is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ32X250-20S replacement — usually within 7-8 hours.