This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X275-100, 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 SUJ100X275-100 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 SAUJ100X275-100, which matches its bore, stroke, force and mounting.
The AirTAC SUJ100X275-100 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, yielding a usable 175-275 mm extend out of the 275 mm nominal maximum.
This SUJ model is discontinued; the direct replacement is the SAUJ100X275-100, retaining the same bore, stroke, force, port, and FA/LB mounting. Note this non-magnetic SKU cannot take a switch, and the stop screw sets end position but is not a load lock—use an external rod lock for held loads.
| Model | Airtac SUJ Adjustable Cylinder SUJ100X275-100 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X275-100 |
| 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 SAUJ100X275-100 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 SAUJ100X275-100 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.
Trimming the extend stroke by up to 100 mm on-site allows precise positioning for pressing operations without machining hard stops.
Field-tuning the 175-275 mm extend window accommodates changing package sizes on a conveyor line without swapping cylinders.
The external stop screw provides exact end-position adjustment for indexing loads to varying heights in storage systems.
To replace the discontinued SUJ100X275-100, specify the direct replacement SAUJ100X275-100, which preserves the 1/2 inch port, 29 mm adjustable cushion, and FA/LB mounting. The 100 mm adjust window is ideal for field tuning the 175-275 mm extend. Because this SKU lacks a magnet, it cannot take a sensor, but legacy CS1-B/DS1-B switches on other units map to CMSG/DMSG/EMSG sensors on the SAUJ. For this 275 mm stroke, verify side-load alignment to prevent rod binding.
Replacement checklist
Yes, the SUJ100X275-100 is discontinued. The direct replacement is the SAUJ100X275-100, which shares the same 100 mm bore, 275 mm stroke, 1/2 inch port, and FA/LB mounting.
The external stop screw provides a 100 mm adjust window, shortening the extend stroke from the 275 mm maximum down to 175 mm.
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X275-100 replacement — usually within 7-8 hours.