This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ80X500-50, 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 SUJ80X500-50
The AirTAC Airtac SUJ Adjustable Cylinder SUJ80X500-50 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 SAUJ80X500-50, which matches its bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke500 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUJ80X500-50
- 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 SUJ80X500-50
The AirTAC SUJ80X500-50 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 SUJ unit is discontinued; the direct replacement is the SAUJ80X500-50, matching the bore, stroke, force, port, and FA/LB mounting. The SAUJ upgrade uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches. Note this non-magnet SKU cannot take a switch, and the stop screw sets end position—it is not a load lock.
Airtac SUJ Adjustable Cylinder SUJ80X500-50 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ80X500-50 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ80X500-50 |
| 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 SAUJ80X500-50 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 SAUJ80X500-50 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 SUJ80X500-50
| 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 SUJ80X500-50 Is Used
Variable-Length Ejector
Tuning the extend stroke by up to 50 mm on-site allows an ejection station to handle mixed part lengths without swapping the entire cylinder.
Adjustable Transfer Stop
The 450-500 mm usable stroke provides a field-adjustable hard stop for diverter gates on a conveyor, letting operators change the end position quickly.
Variable-Height Pallet Stop
Trimming the extend stroke by up to 50 mm accommodates different pallet stack heights at the end of a packaging line without reprogramming the PLC.
Replacing the Airtac SUJ Adjustable Cylinder SUJ80X500-50 with the SAUJ80X500-50
To replace the discontinued SUJ80X500-50, order the direct replacement SAUJ80X500-50, which preserves the 80 mm bore, 500 mm max stroke, 50 mm adjust window, 3/8" port, and FA/LB mounting. Choose the 50 mm adjust window when you need precise field tuning of the extend stroke; the stop screw sets the end position but is not a load lock—use an external rod lock for held loads. Because this is a non-magnet SKU, it cannot accept a sensor; if sensing is required, specify the -S version on the SAUJ and migrate to CMSG/DMSG/EMSG sensors. Finally, at 500 mm stroke, mind the side-load and rod-bending limits—use external guides to prevent premature seal wear.
Replacement checklist
- ✓ Same bore / stroke → SAUJ80X500-50
- ✓ 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 SUJ80X500-50 FAQ
Yes, the SUJ80X500-50 is discontinued. The direct replacement is the SAUJ80X500-50, which matches the 80 mm bore, 500 mm stroke, 50 mm adjust window, 3/8" port, and FA/LB mounting. The SAUJ uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B.
This double-acting double-rod cylinder has a 50 mm adjust window (usable extend stroke 450-500 mm). The external stop screw sets the end position but is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ80X500-50
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ80X500-50 replacement — usually within 7-8 hours.