This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X120-100, 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 SUJ100X120-100 is a double-acting profile-type standard cylinder with a Ø100mm bore and 120mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ100X120-100, which matches its bore, stroke, force and mounting.
The AirTAC SUJ100X120-100 is a double-acting double-rod profile cylinder with an adjustable stroke, allowing you to trim the extend stroke by up to 100 mm on-site. With a nominal 120 mm stroke, the usable extend range is 20-120 mm. The direct replacement is the SAUJ100X120-100, matching the bore, stroke, force, and SC-series mounting.
The external stop screw sets the end position but is not a load lock; an external rod lock is required for held loads. The SAUJ upgrade transitions sensing from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG sensors. This SKU lacks a magnet and cannot accept switches.
| Model | Airtac SUJ Adjustable Cylinder SUJ100X120-100 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X120-100 |
| Bore size | Ø100 mm |
| Stroke | 120 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 SAUJ100X120-100 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 SAUJ100X120-100 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. |
| ×120 | 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.
Allows operators to fine-tune the extend end position on-site for pressing assemblies to varying depths without changing the cylinder.
Accommodates changing package sizes on a line by trimming the extend stroke by up to 100 mm to hit different divert points.
Provides adaptable end-stop positioning for pallets or materials of fluctuating lengths in compact profile machinery.
Choose the 100 mm adjust window when you need maximum field flexibility to shorten the extend stroke from 120 mm down to 20 mm. Because this specific SKU has no magnet, it cannot accept sensors, unlike the -S variant which uses CMSG/DMSG/EMSG on the SAUJ. For strokes of 300 mm or more, verify side-load limits to prevent rod bearing wear.
Replacement checklist
Yes, the SUJ100X120-100 is discontinued. The direct replacement is the SAUJ100X120-100, which matches the 100 mm bore, 120 mm stroke, 100 mm adjust window, 1/2 inch port, and FA/LB mounting.
The external stop screw allows trimming the extend stroke by up to 100 mm on-site, yielding a 20-120 mm usable range.
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X120-100 replacement — usually within 7-8 hours.