This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ80X500-50S, 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 SUJ80X500-50S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ80X500-50S is a double-acting profile-type standard cylinder with a Ø80mm bore and 500mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ80X500-50S, which matches its bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke500 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUJ80X500-50S
- 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 SUJ80X500-50S
The AirTAC SUJ80X500-50S 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 450-500 mm stroke out of the 500 mm nominal maximum. It features a 25 mm rod, M20x1.5 rod thread, 28 mm adjustable air cushions, and a 3/8" port.
This discontinued model is fully replaced by the direct replacement SAUJ80X500-50S, which retains the exact bore, stroke, force, port, and FA/LB mounting. The upgrade path moves sensing from legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors. The stop screw sets end position only; use an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ80X500-50S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ80X500-50S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ80X500-50S |
| Bore size | Ø80 mm |
| Stroke | 500 mm |
| Acting type | Double acting |
| Port size | 3/8" |
| Rod thread | M20×1.5 |
| 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, 28 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAUJ80X500-50S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAUJ80X500-50S 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 SUJ80X500-50S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×500 | 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 SUJ80X500-50S Is Used
Variable-Length Ejector
Tuning the extend stroke by up to 50 mm on-site allows an ejection probe to hit different material thicknesses without swapping the entire cylinder.
Adjustable Transfer Stop
A 500 mm extend stroke that can be mechanically shortened to 450 mm provides a precise, rigid end-stop for varying package sizes on a transfer line.
Replacing the Airtac SUJ Adjustable Cylinder SUJ80X500-50S with the SAUJ80X500-50S
To replace the discontinued SUJ80X500-50S, order the exact direct replacement SAUJ80X500-50S, keeping the 80 mm bore, 500 mm nominal stroke, 50 mm adjust window, 3/8" port, and FA/LB mounting. Choose the -50 mm adjust window when you need on-site extend tuning up to 50 mm; the SAUJ beats a fixed SAU plus external stop by integrating the screw cleanly. Because this model has an -S magnet, swap the legacy CS1-B/DS1-B sensors for CMSG/DMSG/EMSG switches. At 500 mm stroke, support the rod to prevent bending and use external guides to manage side loads.
Replacement checklist
- ✓ Same bore / stroke → SAUJ80X500-50S
- ✓ 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 SUJ80X500-50S FAQ
Yes, the SUJ80X500-50S is discontinued. The direct replacement is the SAUJ80X500-50S, which matches the 80 mm bore, 500 mm stroke, 50 mm adjust window, 3/8" port, and FA/LB mounting. You only need to upgrade the -S magnet sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches.
The external stop screw window is 50 mm, allowing you to mechanically shorten the 500 mm extend stroke down to 450 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ80X500-50S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ80X500-50S replacement — usually within 7-8 hours.