This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X125-20S, 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 SUJ100X125-20S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ100X125-20S is a double-acting profile-type standard cylinder with a Ø100mm bore and 125mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ100X125-20S, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke125 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUJ100X125-20S
- 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 SUJ100X125-20S
The AirTAC SUJ100X125-20S is a double-acting double-rod profile cylinder with an on-site stroke-trim window. An external stop screw lets you shorten the extend stroke by up to 20 mm, giving a usable 105-125 mm range from the 125 mm nominal maximum. It features a 1/2" port, M20x1.5 rod thread, and 29 mm adjustable cushions.
This SUJ unit is discontinued; the direct replacement is the SAUJ100X125-20S, sharing the same bore, stroke, force, and FA/LB mounting. The SAUJ upgrade path uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches on this -S model. 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 SUJ100X125-20S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ100X125-20S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X125-20S |
| Bore size | Ø100 mm |
| Stroke | 125 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 SAUJ100X125-20S 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 SAUJ100X125-20S 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 SUJ100X125-20S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×125 | 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 SUJ100X125-20S Is Used
Variable Depth Spotting
Production lines needing precise extend endpoints without swapping cylinders can dial in the 20 mm trim window to set exact probing or spotting depths on the fly.
Adjustable Transfer Stops
Material handling gates that must accommodate varying package sizes use the 105-125 mm usable stroke range to reposition mechanical stops quickly during format changes.
Replacing the Airtac SUJ Adjustable Cylinder SUJ100X125-20S with the SAUJ100X125-20S
To replace the discontinued SUJ100X125-20S, order the direct replacement SAUJ100X125-20S, which preserves the 100 mm bore, 125 mm stroke, 1/2" port, and FA/LB mounting. Choose the 20 mm adjust window if your extend stroke needs field tuning between 105 and 125 mm. Because this model has the -S magnet, you must migrate from legacy CS1-B/DS1-B sensors to the current CMSG/DMSG/EMSG switches on the SAUJ. For strokes of 300 mm or longer, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same bore / stroke → SAUJ100X125-20S
- ✓ 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 SUJ100X125-20S FAQ
Yes, the SUJ100X125-20S is discontinued. The direct replacement is the SAUJ100X125-20S. It shares the same 100 mm bore, 125 mm stroke, 20 mm adjust window, 1/2" port, and FA/LB mounting. The main upgrade is that the SAUJ uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
The external stop screw provides a 20 mm adjust window, allowing the extend stroke to be trimmed from the 125 mm maximum down to 105 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ100X125-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X125-20S replacement — usually within 7-8 hours.