This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X80-100S, 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 SUJ Adjustable Cylinder SUJ100X80-100S is a double-acting profile-type standard cylinder with a Ø100mm bore and 80mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ100X80-100S, which matches its bore, stroke, force and mounting.
The AirTAC SUJ100X80-100S 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 (usable extend range 0-80 mm). The 1/2" port and M20x1.5 rod thread handle high flow, while the 29 mm adjustable air cushions decelerate heavy loads smoothly.
This SUJ model is discontinued; the direct replacement is the SAUJ100X80-100S, retaining the same force, 1/2" port, and FA/LB mounting. The SAUJ upgrades sensing to current CMSG/DMSG/EMSG switches (this unit uses legacy CS1-B/DS1-B). Remember 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 SUJ100X80-100S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X80-100S |
| Bore size | Ø100 mm |
| Stroke | 80 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 SAUJ100X80-100S 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 SAUJ100X80-100S 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. |
| ×80 | 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 distance on-site for pressing assemblies to exact depths without swapping cylinders.
Enables field adjustment of the extend stroke to accommodate different package sizes on a packaging line.
Permits quick tuning of the stop position for various pallet heights without repositioning the cylinder mount.
To replace the discontinued SUJ100X80-100S, order the SAUJ100X80-100S direct: it matches the 100 mm bore, 80 mm max stroke, 100 mm adjust window, 1/2" port, and FA/LB mounting. Choose the 100 mm adjust window if you need to trim the extend stroke aggressively on-site. Because this is an -S model, swap the legacy CS1-B/DS1-B sensors for CMSG/DMSG/EMSG switches on the SAUJ. For strokes >=300 mm, verify side-load limits to prevent rod binding.
Replacement checklist
Yes, the SUJ100X80-100S is discontinued. The direct replacement is the SAUJ100X80-100S, which shares the same 100 mm bore, 80 mm stroke, 100 mm adjust window, 1/2" port, and FA/LB mounting. You only need to upgrade the sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches.
The external stop screw lets you trim the extend stroke by up to 100 mm on-site (usable extend 0-80 mm). Note the stop sets end position only and is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X80-100S replacement — usually within 7-8 hours.