This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X80-75S, 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 SUJ40X80-75S
The AirTAC SUJ Adjustable Cylinder SUJ40X80-75S 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 SAUJ40X80-75S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke80 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X80-75S
- 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 SUJ40X80-75S
The AirTAC SUJ40X80-75S is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 75 mm on-site, yielding a usable 5-80 mm stroke from the 80 mm nominal maximum. The extruded aluminum profile barrel is notably shorter than a standard ISO 15552 cylinder of the same bore. This bore features a 16 mm rod, M12x1.25 rod-end thread, and a 1/4" port.
This SUJ40X80-75S model is DISCONTINUED. The direct replacement is the SAUJ40X80-75S, which matches the bore, stroke, force, 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. The -S suffix denotes a piston magnet for legacy CS1-B/DS1-B sensors, which must change to current CMSG/DMSG/EMSG switches on the SAUJ replacement.
Airtac SUJ Adjustable Cylinder SUJ40X80-75S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X80-75S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X80-75S |
| 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 SAUJ40X80-75S 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 SAUJ40X80-75S 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 SUJ40X80-75S
| 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 SUJ40X80-75S Is Used
Variable Depth Drilling
Trimming the extend stroke on-site allows a drill head to hit precise material depths between 5 and 80 mm without re-mounting the actuator.
Adjustable Diverter Arms
Diverter arms can be tuned in the field to accommodate changing package widths on a conveyor line by shortening the extend stroke up to 75 mm.
Variable Height Stops
Physical stops for incoming pallets can be adjusted on the fly to handle varying load heights by utilizing the full 75 mm stroke reduction window.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X80-75S with the SAUJ40X80-75S
To replace the discontinued SUJ40X80-75S, order the direct replacement SAUJ40X80-75S, which preserves the 40 mm bore, 80 mm nominal stroke, 75 mm adjust window, 1/4" port, and FA/LB mounting. Choose the 75 mm adjust window when you need on-site extend trimming from 80 mm down to 5 mm without swapping cylinders. Because this unit has the -S magnet, you must upgrade from legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches on the SAUJ. For strokes of 300 mm or longer, verify side-load limits to prevent excessive guide wear. Mounting compatibility is strictly with the AirTAC SC series.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X80-75S
- ✓ 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 SUJ40X80-75S FAQ
Yes, the SUJ40X80-75S is discontinued. The direct replacement is the SAUJ40X80-75S, which matches the 40 mm bore, 80 mm stroke, 75 mm adjust window, 1/4" port, and FA/LB mounting. You must upgrade the -S piston magnet sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches.
The external stop screw window is 75 mm, allowing you to trim the 80 mm nominal extend stroke down to a 5 mm usable stroke on-site. The stop sets end position only and does not lock the load.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X80-75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X80-75S replacement — usually within 7-8 hours.