This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X80-40, 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 SUJ40X80-40
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X80-40 is a double-acting profile-type standard cylinder with a Ø40mm bore and 80mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X80-40, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke80 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X80-40
- 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 SUJ40X80-40
The AirTAC SUJ40X80-40 is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 40 mm on-site, yielding a usable 40-80 mm stroke from the 80 mm nominal maximum. This discontinued unit is fully replaced by the direct replacement SAUJ40X80-40, which shares the same compact profile body, force, and SC-series FA/LB mounting.
The SAUJ upgrade adopts current CMSG/DMSG/EMSG sensors, replacing the legacy CS1-B/DS1-B switches used here, and introduces the SAUF built-in-valve variant the SU line lacked. Note this SKU lacks a magnet and cannot take a switch; the stop screw sets end position but is not a load lock.
Airtac SUJ Adjustable Cylinder SUJ40X80-40 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X80-40 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X80-40 |
| Bore size | Ø40 mm |
| Stroke | 80 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 SAUJ40X80-40 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 SAUJ40X80-40 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 SUJ40X80-40
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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 SUJ40X80-40 Is Used
Diverter Gate Positioning
Trimming the extend stroke by up to 40 mm on-site allows precise divergence gate alignment without machining custom spacers.
Variable Length Product Stops
Adjusting the 80 mm extend stroke down to 40 mm accommodates changing package sizes on a packing line quickly.
Adjustable Pusher Pins
Setting the end position externally via the stop screw enables exact pusher pin depth for varying tote dimensions.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X80-40 with the SAUJ40X80-40
To replace the discontinued SUJ40X80-40, order the exact direct replacement SAUJ40X80-40, which preserves the 40 mm bore, 80 mm nominal stroke, 40 mm adjust window, 1/4" port, and FA/LB mounting. The -40 mm adjust window is ideal when field stroke tuning is required, beating a fixed SAU plus external stop. Because this SKU has no magnet, you cannot add a switch; the SAUJ requires CMSG/DMSG/EMSG sensors instead of the old CS1-B/DS1-B. For strokes at or over 300 mm, verify side-load limits. The stop screw sets end position only; use an external rod lock for held loads.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X80-40
- ✓ 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 SUJ40X80-40 FAQ
Yes, the SUJ40X80-40 is discontinued. The SAUJ uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B.
The external stop screw trims the extend stroke by up to 40 mm on-site, giving a usable 40-80 mm stroke. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X80-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X80-40 replacement — usually within 7-8 hours.