This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X25-20, 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 SUJ100X25-20
The AirTAC SUJ Adjustable Cylinder SUJ100X25-20 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 SAUJ100X25-20, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke25 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUJ100X25-20
- 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 SUJ100X25-20
The AirTAC SUJ100X25-20 is a double-acting, double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 20 mm on-site. With a 25 mm nominal stroke, the usable extend range is 5 to 25 mm. The stop screw sets the end position but is not a load lock; a plain cylinder drifts on air loss, so use an external rod lock or pilot-operated check valve for held loads. The 1/2" port and M20x1.5 rod thread handle speeds of 30-800 mm/s.
This SUJ model is discontinued; the direct replacement is the SAUJ100X25-20, matching the bore, stroke, force, port, and FA/LB mounting. The compact profile barrel is shorter than an ISO 15552 cylinder of the same bore. Because this SKU lacks a magnet (-S), it cannot take a magnetic switch. The SAUJ successor uses current CMSG/DMSG/EMSG sensors, whereas this legacy type used CS1-B/DS1-B.
Airtac SUJ Adjustable Cylinder SUJ100X25-20 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ100X25-20 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X25-20 |
| 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 SAUJ100X25-20 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 SAUJ100X25-20 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 SUJ100X25-20
| 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 SUJ100X25-20 Is Used
Short-Stroke Clamping
Adjusts the extend clamp point by up to 20 mm on-site to accommodate varying material thicknesses without reprogramming the machine cycle.
Transfer Diverter
Tunes the diverter stroke length precisely to the product profile, ensuring positive contact without over-traveling into the conveyor lane.
Carton Sealing Press
Dials in the exact 5 to 25 mm extend position for sealing heads of different heights, providing consistent down-force across varied box sizes.
Replacing the Airtac SUJ Adjustable Cylinder SUJ100X25-20 with the SAUJ100X25-20
To replace the discontinued SUJ100X25-20, order the direct replacement SAUJ100X25-20, which retains the 100 mm bore, 25 mm nominal stroke, 20 mm adjust window, 1/2" port, and FA/LB mounting. Choose the 20 mm adjust window when you need precise on-site extend tuning between 5 and 25 mm without machining spacers. Because this SKU has no magnet, it cannot accept sensors; if sensing is required, specify an SAUJ with the -S option and upgrade to CMSG/DMSG/EMSG switches (the SUJ used CS1-B/DS1-B). For strokes at or over 300 mm, verify side-load limits to prevent guide wear. Mounting compatibility is strictly with the AirTAC SC series.
Replacement checklist
- ✓ Same bore / stroke → SAUJ100X25-20
- ✓ 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 SUJ100X25-20 FAQ
Yes, the AirTAC SUJ100X25-20 is discontinued. The direct replacement is the SAUJ100X25-20, which matches the 100 mm bore, 25 mm stroke, 20 mm adjust window, 1/2" port, and FA/LB mounting. The SAUJ successor 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 you to trim the 25 mm nominal extend stroke down to 5 mm on-site. The stop sets end position only; it is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ100X25-20
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X25-20 replacement — usually within 7-8 hours.