This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X450-40S, 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 SUJ40X450-40S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X450-40S is a double-acting profile-type standard cylinder with a Ø40mm bore and 450mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X450-40S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke450 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X450-40S
- 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 SUJ40X450-40S
The AirTAC SUJ40X450-40S is a double-acting double-rod profile cylinder with an on-site stroke-trim window. An external stop screw shortens the extend stroke by up to 40 mm, yielding a usable 410-450 mm range from the 450 mm nominal maximum. This discontinued model is fully replaced by the SAUJ40X450-40S.
The direct replacement SAUJ40X450-40S retains the exact bore, stroke, force, and SC-series FA/LB mounting. Upgrading moves you from legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors. The stop screw sets end position but is not a load lock; use an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ40X450-40S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X450-40S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X450-40S |
| Bore size | Ø40 mm |
| Stroke | 450 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 SAUJ40X450-40S 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 SAUJ40X450-40S 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 SUJ40X450-40S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×450 | 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 SUJ40X450-40S Is Used
Variable Pitch Push
Parts feeding requiring a 410-450 mm extend tuned on-site to match varying blank lengths without swapping cylinders.
Adjustable Diverter
Actuating a lane gate where the stop screw sets the exact 40 mm protrusion limit to clear passing carton profiles.
End-Stop Positioning
Depositing items at differing heights on a belt by trimming the extend stroke in the field rather than adjusting hard tooling.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X450-40S with the SAUJ40X450-40S
To replace the discontinued SUJ40X450-40S, use the SAUJ40X450-40S direct: it preserves the 40 mm bore, 450 mm nominal stroke, 40 mm adjust window, 1/4" port, and FA/LB mounts. Choose the 40 mm adjust window if you need up to 40 mm of field tuning; the stop screw sets end position but is not a load lock. Because stroke is 450 mm, support the rod against side-load bending with external guides. The -S magnet on this unit used legacy CS1-B/DS1-B switches; the SAUJ replacement requires CMSG/DMSG/EMSG sensors.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X450-40S
- ✓ 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 SUJ40X450-40S FAQ
Yes, the SUJ40X450-40S is discontinued. The direct replacement is the SAUJ40X450-40S, which matches the 40 mm bore, 450 mm stroke, 40 mm adjust window, 1/4" port, and FA/LB mounting. The SAUJ also uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
The 40 mm bore has a 1/4" port and M12x1.25 rod thread. The external stop screw provides a 40 mm adjust window, shortening the 450 mm extend stroke down to 410 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X450-40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X450-40S replacement — usually within 7-8 hours.