This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X25-10, 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 SUJ40X25-10
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X25-10 is a double-acting profile-type standard cylinder with a Ø40mm bore and 25mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X25-10, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke25 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X25-10
- 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 SUJ40X25-10
The AirTAC SUJ40X25-10 is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 10 mm on-site, yielding a usable 15-25 mm stroke from the 25 mm nominal maximum. This discontinued 40 mm bore unit features a 1/4" port, M12x1.25 rod thread, and 21 mm adjustable air cushions at each end.
Because this SKU lacks a magnet, it cannot accept a magnetic switch; the modern SAUJ also upgrades sensing from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG sensors. The stop screw sets the end position but is not a load lock—use an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ40X25-10 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X25-10 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X25-10 |
| Bore size | Ø40 mm |
| Stroke | 25 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| 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, 21 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAUJ40X25-10 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
The SAUJ40X25-10 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 SUJ40X25-10
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | 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 SUJ40X25-10 Is Used
Short-Stroke Clamping
Field-trim the 15-25 mm extend stroke to dial in exact clamping contact on variable thickness parts without swapping cylinders.
Transfer Pusher Setup
Fine-tune the ejection position on a conveyor by adjusting the stop screw on-site to compensate for mechanical wear or product size changes.
Compact Part Ejection
Fit the short profile barrel into tight machinery footprints while retaining the ability to shorten the extend stroke by up to 10 mm for precise ejection timing.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X25-10 with the SAUJ40X25-10
To replace the discontinued SUJ40X25-10, specify the direct replacement SAUJ40X25-10, retaining the 40 mm bore, 25 mm nominal stroke, 10 mm adjust window, and 1/4" port. Choose the 10 mm adjust window when you need precise field tuning of the extend end position; for fixed strokes, a standard SAU cylinder is simpler. This non-magnet SKU cannot take sensors, but if you order the -S version of the SAUJ, you must switch to CMSG/DMSG/EMSG switches from the legacy CS1-B/DS1-B. Note that for longer strokes (>=300 mm), verify side-load limits to prevent rod binding. The stop screw is not a lock; add a pilot-operated check valve or external rod lock for load holding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X25-10
- ✓ 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 SUJ40X25-10 FAQ
Yes, the SUJ40X25-10 is discontinued. The direct replacement is the SAUJ40X25-10, which matches the 40 mm bore, 25 mm stroke, 10 mm adjust window, 1/4" port, and FA/LB mounting. The SAUJ uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B.
The external stop screw window is 10 mm, allowing you to shorten the 25 mm nominal extend stroke down to 15 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X25-10
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X25-10 replacement — usually within 7-8 hours.