This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X40-40, 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 SUJ40X40-40
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X40-40 is a double-acting profile-type standard cylinder with a Ø40mm bore and 40mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X40-40, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke40 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X40-40
- 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 SUJ40X40-40
The AirTAC SUJ40X40-40 is a double-acting double-rod profile cylinder with a 40mm bore and a 40mm adjustable stroke window. An external stop screw allows you to trim the extend stroke by up to 40mm on-site, setting the exact end position without needing custom machining. The direct replacement is the SAUJ40X40-40, matching the bore, stroke, force, and SC-series FA/LB mounting.
The SAUJ upgrade transitions sensing from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG sensors, though this specific non-magnetic SKU cannot accept a switch. Remember the stop screw sets end position but is not a load lock; use an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ40X40-40 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X40-40 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X40-40 |
| Bore size | Ø40 mm |
| Stroke | 40 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 SAUJ40X40-40 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 SAUJ40X40-40 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 SUJ40X40-40
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 SUJ40X40-40 Is Used
Variable Depth Drilling
Trimming the extend stroke by up to 40mm on-site lets a drill head hit precise material depths without swapping cylinders for each job.
Adjustable Diverter Arms
Diverter gates on a packaging line can be tuned on-site to accommodate changing box widths, using the stop screw to set the exact extend endpoint.
Variable Stroke Pushers
Pushing varied carton sizes into a palletizer is simplified by field-tuning the extend stroke up to 40mm to prevent crushing the goods.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X40-40 with the SAUJ40X40-40
To replace the discontinued SUJ40X40-40, order the direct replacement SAUJ40X40-40, which retains the 40mm bore, 40mm adjust window, 1/4" port, and FA/LB mounting. Choose the 40mm adjust window if you need to trim the full 40mm extend stroke on-site; the stop screw sets end position but is not a lock. This non-magnetic SKU cannot take a sensor, but upgrading to an -S SAUJ switches you from CS1-B/DS1-B to CMSG/DMSG/EMSG sensors. Because the 40mm stroke is under 300mm, side-load rod deflection is minimal, but for holding loads without live air, add an external rod lock.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X40-40
- ✓ 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 SUJ40X40-40 FAQ
Yes, the SUJ40X40-40 is discontinued. The direct replacement is the SAUJ40X40-40, which matches the 40mm bore, 40mm 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.
This double-acting double-rod cylinder has a 40mm adjust window, allowing you to trim the extend stroke by up to 40mm on-site. The stop screw sets end position but is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X40-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X40-40 replacement — usually within 7-8 hours.