This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X80-30S, 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 SUJ40X80-30S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X80-30S 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 SAUJ40X80-30S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke80 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X80-30S
- 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 SUJ40X80-30S
The AirTAC SUJ40X80-30S is a double-acting, double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 30 mm on-site. With a nominal 80 mm stroke, the usable extend range is 50-80 mm. This SUJ model is discontinued; the direct replacement is the SAUJ40X80-30S, which retains the same bore, force, and FA/LB mounting.
The SAUJ upgrade uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches on this -S cylinder. The stop screw sets the end position but is not a load lock; use an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ40X80-30S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X80-30S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X80-30S |
| 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 SAUJ40X80-30S 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 SAUJ40X80-30S 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 SUJ40X80-30S
| 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 SUJ40X80-30S Is Used
Variable Pitch Forming
Adjusts the extend stroke on-site to press parts of varying heights without reprogramming the motion controller.
Sorting Diverter Stroke
Trims the extend position to deflect varying package sizes accurately on a moving belt line.
Carton Flap Folding
Tunes the extend end-point in the field to fold different carton depths cleanly.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X80-30S with the SAUJ40X80-30S
To replace the discontinued SUJ40X80-30S, order the SAUJ40X80-30S for an direct match. Choose the 30 mm adjust window if your extend stroke needs field tuning between 50 and 80 mm. Retain your FA or LB mounts, and note the -S sensor change from CS1-B/DS1-B to CMSG/DMSG/EMSG. For strokes of 300 mm or longer, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X80-30S
- ✓ 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 SUJ40X80-30S FAQ
Yes, the SUJ40X80-30S is discontinued. The direct replacement is the SAUJ40X80-30S, matching the 40 mm bore, 80 mm stroke, 30 mm adjust window, and 1/4" port.
The external stop screw provides a 30 mm adjust window, shortening the 80 mm nominal extend stroke down to 50 mm.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X80-30S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X80-30S replacement — usually within 7-8 hours.