This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X80-30, 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 SUJ40X80-30
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X80-30 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 SAUJ40X80-30, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke80 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X80-30
- 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 SUJ40X80-30
The AirTAC SUJ40X80-30 is a double-acting double-rod adjustable-stroke profile cylinder, now discontinued. An external stop screw lets you trim the extend stroke by up to 30 mm on-site, giving a usable 50-80 mm stroke from the 80 mm nominal maximum. The stop screw sets the end position but is not a load lock; use an external rod lock for held loads.
The direct replacement is the SAUJ40X80-30, matching the bore, stroke, force, and SC-series FA/LB mounting. This base SKU lacks a magnet, so it cannot take a magnetic switch. Upgrading to the SAUJ moves sensing from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG sensors.
Airtac SUJ Adjustable Cylinder SUJ40X80-30 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X80-30 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X80-30 |
| 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 SAUJ40X80-30 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 SAUJ40X80-30 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 SUJ40X80-30
| 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 SUJ40X80-30 Is Used
Variable Stroke Clamping
Adjusts the extend stop on-site to clamp parts of varying heights without reprogramming the motion controller.
Sorting Diverter Timing
Trims the extend stroke by up to 30 mm to tune the diverter reach precisely for changing package profiles.
Carton Sealing Press
Dials in the exact 50-80 mm extend position to accommodate different flap thicknesses on the fly.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X80-30 with the SAUJ40X80-30
To replace the discontinued SUJ40X80-30, specify the SAUJ40X80-30 for an direct match on bore, 80 mm stroke, 30 mm adjust window, 1/4" port, and FA/LB mounting. Choose the 30 mm adjust window when you need precise field tuning of the extend end-position. Because this non-magnetic SKU cannot accept switches, migrating to the SAUJ allows modern CMSG/DMSG/EMSG sensors. For strokes of 300 mm or longer, verify side-load limits to prevent guide wear. The external stop sets position but does not lock the load on air loss.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X80-30
- ✓ 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 SUJ40X80-30 FAQ
Yes, the SUJ40X80-30 is discontinued.
The external stop screw trims the extend stroke by up to 30 mm on-site, yielding a usable 50-80 mm stroke from the 80 mm maximum.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X80-30
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X80-30 replacement — usually within 7-8 hours.