This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ32X450-75, 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 SUJ32X450-75 is a double-acting profile-type standard cylinder with a Ø32mm bore and 450mm stroke, 1/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ32X450-75, which matches its bore, stroke, force and mounting.
The AirTAC SUJ32X450-75 is a discontinued double-acting double-rod profile cylinder with a 32mm bore and 1/8" port. An external stop screw lets you trim the extend stroke by up to 75mm on-site, yielding a usable 375-450mm range from the 450mm nominal maximum.
The direct replacement is the SAUJ32X450-75, sharing the same body, force, and FA/LB mounting. The SAUJ upgrades sensing to current CMSG/DMSG/EMSG switches, whereas this legacy model used CS1-B/DS1-B. 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 SUJ32X450-75 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ32X450-75 |
| Bore size | Ø32 mm |
| Stroke | 450 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 SAUJ32X450-75 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 SAUJ32X450-75 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. |
| ×450 | 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 75mm to push parts of varying widths into a machining station without swapping the cylinder.
Setting a precise 375-450mm reach for a conveyor diverter arm to accommodate different product box sizes on the fly.
Trimming the extend stroke to tamp down varying fill levels in packaging cases before the final seal is applied.
To replace the discontinued SUJ32X450-75, order the direct replacement SAUJ32X450-75, which preserves the 32mm bore, 450mm stroke, 75mm adjust window, and 1/8" port. Choose the 75mm adjust window if you need on-site extend tuning between 375-450mm; a fixed SAU cylinder plus external stop is bulkier. Mounting uses FA or LB brackets (SC-series compatible). As this SKU lacks a magnet (-S), it cannot take a switch; the SAUJ requires CMSG/DMSG/EMSG sensors instead of legacy CS1-B/DS1-B. For the 450mm stroke, use external guides to prevent rod bending and manage side loads.
Replacement checklist
Yes, the SUJ32X450-75 is discontinued. The direct replacement is the SAUJ32X450-75, which matches the 32mm bore, 450mm stroke, 75mm adjust window, and 1/8" port. The SAUJ uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B.
The external stop screw provides a 75mm adjust window, shortening the 450mm extend stroke to 375mm 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 SAUJ32X450-75 replacement — usually within 7-8 hours.