This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ50X80-50S, 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 SUJ50X80-50S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ50X80-50S 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 SAUJ50X80-50S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke80 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X80-50S
- 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 SUJ50X80-50S
The AirTAC SUJ50X80-50S is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 50 mm on-site, yielding a usable 30-80 mm extend out of the 80 mm nominal maximum. It features a 1/4" port, an M16x1.5 rod thread, and 21 mm adjustable cushions.
This SUJ model is discontinued; the direct replacement is the SAUJ50X80-50S, retaining the same bore, stroke, force, port, and SC-series FA/LB mounting. The upgrade path moves legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches. Note the stop screw sets end position only; it is not a load lock, so use an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ50X80-50S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X80-50S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X80-50S |
| 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 SAUJ50X80-50S 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 SAUJ50X80-50S 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 SUJ50X80-50S
| 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 SUJ50X80-50S Is Used
Variable Pitch Pushing
Feeding different blank lengths on a line where the 50 mm trim window lets operators dial in the exact 30-80 mm extend position without changing cylinders.
Adjustable Diverter Gate
Actuating a routing flap where the stop screw tunes the extend endpoint on-site to accommodate new package sizes without reprogramming the PLC.
Crush-Sensitive Forming
Applying a closing force where the external stop mechanically limits the extend stroke to protect delicate contents, set precisely between 30 and 80 mm.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X80-50S with the SAUJ50X80-50S
To replace the discontinued SUJ50X80-50S, order the SAUJ50X80-50S for an exact profile direct. Choose the 50 mm adjust window when you need wide on-site extend tuning from 30 to 80 mm. Keep the FA or LB mounts from the SC series. Because this is an -S model, you must swap the legacy CS1-B/DS1-B sensors for CMSG/DMSG/EMSG switches. For strokes at or above 300 mm, verify side-load limits to prevent guide wear. The stop screw trims position but does not lock; add an external rod lock for load holding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X80-50S
- ✓ 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 SUJ50X80-50S FAQ
Yes, the SUJ50X80-50S is discontinued. The direct replacement is the SAUJ50X80-50S, matching the 50 mm bore, 80 mm stroke, 50 mm adjust window, 1/4" port, and FA/LB mounting. You will need to upgrade from legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches.
The external stop screw window is 50 mm, allowing you to shorten the 80 mm nominal extend stroke down to 30 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ50X80-50S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ50X80-50S replacement — usually within 7-8 hours.