This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X400-10, 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 SUJ40X400-10
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X400-10 is a double-acting profile-type standard cylinder with a Ø40mm bore and 400mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X400-10, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke400 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X400-10
- 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 SUJ40X400-10
The AirTAC SUJ40X400-10 is a double-acting double-rod adjustable-stroke profile cylinder. An external stop screw lets you trim the extend stroke by up to 10 mm on-site, giving a usable extend range of 390-400 mm (the 400 mm nominal stroke is the maximum). The extruded aluminum profile barrel is shorter than a standard ISO 15552 cylinder of the same bore. This SUJ model is discontinued; the direct replacement is the SAUJ40X400-10, matching the 40 mm bore, 400 mm stroke, 1/4" port, and FA/LB mounting.
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 for held loads. This non-magnet SKU cannot take a switch, whereas the SAUJ successor upgrades sensing to current CMSG/DMSG/EMSG sensors from the legacy CS1-B/DS1-B.
Airtac SUJ Adjustable Cylinder SUJ40X400-10 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X400-10 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X400-10 |
| Bore size | Ø40 mm |
| Stroke | 400 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 SAUJ40X400-10 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 SAUJ40X400-10 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 SUJ40X400-10
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×400 | 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 SUJ40X400-10 Is Used
Diverter Gate Positioning
Trimming the extend stroke by up to 10 mm on-site allows precise alignment of diverter gates on a conveyor without machining custom spacers.
Variable Depth Flap Folding
Adjustable end positioning accommodates minor carton size variations on a packaging line, setting the exact fold depth dynamically.
Sensorless Hard Stop Pressing
Ideal for mechanical pressing tasks where the external stop screw defines the final position, and no magnetic piston sensing is required.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X400-10 with the SAUJ40X400-10
To replace the discontinued SUJ40X400-10, order the direct replacement SAUJ40X400-10, which retains the 40 mm bore, 400 mm stroke, 10 mm adjust window, 1/4" port, and FA/LB mounting. Choose the 10 mm adjust window when you need precise on-site end-position tuning rather than a fixed stop. Because this SKU lacks a magnet, it cannot take a sensor; the SAUJ upgrade uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B. For the 400 mm long stroke, use external guides to prevent rod bending and manage side loads.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X400-10
- ✓ 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 SUJ40X400-10 FAQ
Yes, the SUJ40X400-10 is discontinued. The direct replacement is the SAUJ40X400-10, which matches the 40 mm bore, 400 mm stroke, 10 mm adjust window, 1/4" port, and FA/LB mounting.
The external stop screw provides a 10 mm adjust window, allowing you to shorten the extend stroke from the 400 mm maximum down to 390 mm. The stop sets end position but is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X400-10
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X400-10 replacement — usually within 7-8 hours.