This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ32X275-50S, 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 SUJ32X275-50S is a double-acting profile-type standard cylinder with a Ø32mm bore and 275mm stroke, 1/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ32X275-50S, which matches its bore, stroke, force and mounting.
The AirTAC SUJ32X275-50S 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 225 to 275 mm extend length from the 275 mm nominal maximum. The extruded aluminum profile barrel is more compact than a standard cylinder of the same bore. This discontinued model is replaced by the SAUJ32X275-50S, a direct upgrade retaining the 32 mm bore, 1/8" port, and M10x1.25 rod thread.
The SAUJ upgrade adopts current CMSG/DMSG/EMSG sensors over the legacy CS1-B/DS1-B switches. Remember the stop screw sets end position only; it is not a load lock, so use an external rod lock for held loads.
| Model | Airtac SUJ Adjustable Cylinder SUJ32X275-50S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ32X275-50S |
| Bore size | Ø32 mm |
| Stroke | 275 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 SAUJ32X275-50S 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 SAUJ32X275-50S 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. |
| ×275 | 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.
Dialing in the extend stroke by up to 50 mm on-site allows a single 32 mm bore cylinder to drive multiple product pitches without swapping mechanical hardstops.
Trimming the 275 mm extend stroke lets operators reposition a transfer pusher precisely for mixed package sizes on the line without reprogramming the motion controller.
To replace the discontinued SUJ32X275-50S, order the SAUJ32X275-50S for an direct match on bore, stroke, force, 1/8" port, and FA/LB mounting. Choose the 50 mm adjust window if you need on-site tuning between 225 and 275 mm; if your extend length is fixed, a standard SAU cylinder is simpler. The SAUJ uses CMSG/DMSG/EMSG sensors instead of the -S CS1-B/DS1-B switches. For this 275 mm stroke, verify side-load limits to prevent rod binding.
Replacement checklist
Yes, the SUJ32X275-50S is discontinued. The direct replacement is the SAUJ32X275-50S, which matches the 32 mm bore, 275 mm stroke, 50 mm adjust window, 1/8" port, and FA/LB mounting. The SAUJ upgrades to current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
The external stop screw trims the extend stroke by up to 50 mm on-site, giving a usable 225 to 275 mm extend length. 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 SAUJ32X275-50S replacement — usually within 7-8 hours.