This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ50X80-75S, 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 SUJ50X80-75S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ50X80-75S is a double-acting profile-type standard cylinder with a Ø50mm bore and 80mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ50X80-75S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke80 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X80-75S
- 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 SUJ50X80-75S
The AirTAC SUJ50X80-75S is a discontinued 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 extend window from the 80 mm nominal maximum. The bore dictates a 1/4" port, a Ø20 mm rod, and 21 mm adjustable cushions. This stop 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 direct replacement is the SAUJ50X80-75S, sharing the same bore, stroke, force, port, and FA/LB mounting. Upgrading to the SAUJ moves you to current CMSG/DMSG/EMSG sensors from the legacy CS1-B/DS1-B switches on this -S magnet model.
Airtac SUJ Adjustable Cylinder SUJ50X80-75S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X80-75S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X80-75S |
| Bore size | Ø50 mm |
| Stroke | 80 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M16×1.5 |
| 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 SAUJ50X80-75S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAUJ50X80-75S 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 SUJ50X80-75S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | 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 SUJ50X80-75S Is Used
Variable Depth Drilling
Trimming the extend stroke by up to 75 mm on-site allows precise control of drill head depth without swapping cylinders between custom jigs.
Adjustable Diverter Arms
Tuning the 5-80 mm extend window lets a single diverter accommodate changing package sizes on a packaging line.
Custom Pusher Stops
The external stop screw provides a hard mechanical end position for pushing pallets, adjustable as layout requirements evolve.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X80-75S with the SAUJ50X80-75S
Replace the discontinued SUJ50X80-75S directly with the SAUJ50X80-75S; the body, 1/4" port, 80 mm nominal stroke, and FA/LB mounts carry over. Choose the 75 mm adjust window when you need precise field tuning of the extend stroke between 5 and 80 mm. Because this -S model used legacy CS1-B/DS1-B switches, you must migrate to CMSG/DMSG/EMSG sensors for the SAUJ. For strokes of 300 mm or longer, verify your side-load limits to prevent rod distortion.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X80-75S
- ✓ 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 SUJ50X80-75S FAQ
Yes, the SUJ50X80-75S is discontinued. The direct replacement is the SAUJ50X80-75S, which matches the 50 mm bore, 80 mm stroke, 75 mm adjust window, 1/4" port, and FA/LB mounting. You will need to upgrade from the legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors.
The external stop screw provides a 75 mm adjust window, shortening the 80 mm nominal extend stroke down to 5 mm. The stop sets end position only and does not lock the load.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ50X80-75S
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