This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X275-75, 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 SUJ100X275-75 is a double-acting profile-type standard cylinder with a Ø100mm bore and 275mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ100X275-75, which matches its bore, stroke, force and mounting.
The AirTAC SUJ100X275-75 is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 75 mm on-site, yielding a usable 200-275 mm stroke from the 275 mm nominal maximum. It features a 25 mm rod, M20x1.5 rod thread, 29 mm adjustable air cushions, and a 1/2" port.
This SUJ unit is discontinued; the direct replacement is the SAUJ100X275-75, retaining the same bore, stroke, force, port, and SC-series FA/LB mounting. The SAUJ upgrades sensing to current CMSG/DMSG/EMSG switches (this SKU lacks a magnet and cannot take a switch, while legacy -S SUJ used CS1-B/DS1-B). The stop screw sets end position only—it is not a load lock; use an external rod lock for held loads.
| Model | Airtac SUJ Adjustable Cylinder SUJ100X275-75 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X275-75 |
| Bore size | Ø100 mm |
| Stroke | 275 mm |
| Acting type | Double acting |
| Port size | 1/2" |
| Rod thread | M20×1.5 |
| 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, 29 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAUJ100X275-75 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAUJ100X275-75 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). |
|---|---|
| 100 | 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.
Trims the extend stroke down to 200 mm to accommodate varying box sizes on the line without re-mounting the cylinder, using the 29 mm cushions to decelerate the 25 mm rod.
To replace this discontinued SUJ100X275-75, specify the SAUJ100X275-75 direct: it keeps the 100 mm bore, 275 mm max stroke, 75 mm adjust window, 1/2" port, and FA/LB mounts. Choose the 75 mm adjust window when you need on-site extend trimming between 200 and 275 mm, which often beats installing a fixed-stroke SAU plus an external stop. Because this exact SKU lacks a magnet, it cannot accept a switch; if sensing is needed, move to the SAUJ and select CMSG/DMSG/EMSG sensors. For this 275 mm stroke, verify side-load limits on the 25 mm rod. Remember, the stop screw sets end position but does not lock the load on air loss—add an external rod lock for holding.
Replacement checklist
Yes, the SUJ100X275-75 is discontinued. The direct replacement is the SAUJ100X275-75, which matches the 100 mm bore, 275 mm max stroke, 75 mm adjust window, 1/2" port, and FA/LB mounting. The SAUJ also supports current CMSG/DMSG/EMSG sensors.
This double-acting double-rod cylinder has a 75 mm adjust window, allowing the extend stroke to be trimmed on-site from 275 mm down to 200 mm. It uses a 1/2" port.
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X275-75 replacement — usually within 7-8 hours.