This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X25-20S, 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.
Airtac SUJ Adjustable Cylinder SUJ100X25-20S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ100X25-20S is a double-acting profile-type standard cylinder with a Ø100mm bore and 25mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ100X25-20S, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke25 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUJ100X25-20S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SUJ Adjustable Cylinder SUJ100X25-20S
The AirTAC SUJ100X25-20S is a double-acting, double-rod profile cylinder with an on-site stroke-trim window. Its external stop screw lets you shorten the extend stroke by up to 20 mm, giving a usable 5 to 25 mm range from the 25 mm nominal maximum. It features a 1/2" port, a 25 mm rod, and 29 mm adjustable cushions.
This discontinued unit is replaced direct by the SAUJ100X25-20S, retaining the exact bore, force, and FA/LB mounting. The upgrade path moves legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches. Note the stop screw sets end position only; it is not a load lock, so use an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ100X25-20S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ100X25-20S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X25-20S |
| Bore size | Ø100 mm |
| Stroke | 25 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 SAUJ100X25-20S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAUJ100X25-20S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SUJ Adjustable Cylinder SUJ100X25-20S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×25 | 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.
Where the Airtac SUJ Adjustable Cylinder SUJ100X25-20S Is Used
Short-Stroke Clamping
Trimming the extend stroke by up to 20 mm on-site allows precise clamping of variable thickness parts without re-mounting the cylinder.
Transfer Diverter Setup
Field-tuning the 5 to 25 mm extend window lets operators dial in the exact diverter finger position for changing product widths on the line.
Pallet Stop Positioning
The external stop screw provides a hard mechanical end position for pallet stops, adjustable within the 20 mm window to handle varied pallet depths.
Replacing the Airtac SUJ Adjustable Cylinder SUJ100X25-20S with the SAUJ100X25-20S
To replace the discontinued SUJ100X25-20S, specify the SAUJ100X25-20S. It preserves the 100 mm bore, 25 mm stroke, 20 mm adjust window, 1/2" port, and FA/LB mounting. Choose the 20 mm adjust window when you need precise field tuning of the extend stroke rather than a fixed stop. The -S suffix indicates a piston magnet; you must switch from legacy CS1-B/DS1-B sensors to CMSG/DMSG/EMSG switches on the SAUJ. Because the 25 mm stroke is under 300 mm, side-load concerns are minimal. The external stop sets end position but does not lock the load; add an external rod lock for air-loss holding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ100X25-20S
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S): sensor family CS1-B → CMSG
- ✓ Mounting reused (FA/FB/CA/CB/LB)
- ✓ Need a built-in valve? → SAUF
Airtac SUJ Adjustable Cylinder SUJ100X25-20S FAQ
Yes, the SUJ100X25-20S is discontinued. The direct replacement is the SAUJ100X25-20S, which matches the 100 mm bore, 25 mm stroke, 20 mm adjust window, 1/2" port, and FA/LB mounting. You will need to upgrade the legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches.
The external stop screw offers a 20 mm adjust window, allowing you to shorten the extend stroke from the 25 mm nominal maximum down to 5 mm on-site. The stop sets end position only and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ100X25-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X25-20S replacement — usually within 7-8 hours.