This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X450-100S, 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 SUJ40X450-100S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X450-100S 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 SAUJ40X450-100S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke450 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X450-100S
- 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 SUJ40X450-100S
The AirTAC SUJ40X450-100S is a double-acting double-rod profile cylinder with a 40 mm bore and a 450 mm maximum extend stroke. An external stop screw lets you trim the extend stroke by up to 100 mm on-site, giving a usable window of 350-450 mm. It features a 1/4 inch port, a 16 mm rod, and 21 mm adjustable cushions.
This SUJ model is discontinued; the direct replacement is the SAUJ40X450-100S, retaining the same bore, stroke, force, and FA/LB mounting. The stop screw sets the end position but is not a load lock; use an external rod lock for held loads. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B sensors, which upgrade to CMSG/DMSG/EMSG on the SAUJ.
Airtac SUJ Adjustable Cylinder SUJ40X450-100S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X450-100S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X450-100S |
| 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 SAUJ40X450-100S 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 SAUJ40X450-100S 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 SUJ40X450-100S
| 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 SUJ40X450-100S Is Used
Variable Pitch Pushing
Feeding different length parts on a conveyor where the 100 mm adjust window allows operators to tune the 450 mm extend stroke on-site without swapping cylinders.
Adjustable Stop Positioning
Acting as a movable hard stop for incoming pallets, letting maintenance trim the extend stroke by up to 100 mm to accommodate varied pallet depths.
Variable Depth Sealing
Driving a sealing head that must contact cartons of different heights, using the external stop screw to precisely set the extend endpoint.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X450-100S with the SAUJ40X450-100S
To replace the discontinued SUJ40X450-100S, order the direct replacement SAUJ40X450-100S, which matches the 40 mm bore, 450 mm stroke, 100 mm adjust window, 1/4 inch port, and FA/LB mounting. Choose the 100 mm adjust window if you need to trim the extend stroke down to 350 mm on-site; this external stop sets end position but is not a lock, so add an external rod lock for held loads. Because the 450 mm stroke exceeds 300 mm, use external guides to prevent rod bending and side-load wear. The -S magnet means switching from legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG sensors on the SAUJ.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X450-100S
- ✓ 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 SUJ40X450-100S FAQ
Yes, the SUJ40X450-100S is discontinued. The direct replacement is the SAUJ40X450-100S, which matches the 40 mm bore, 450 mm stroke, 100 mm adjust window, 1/4 inch port, and FA/LB mounting. The SAUJ also uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
The 100 mm adjust window allows you to shorten the 450 mm extend stroke down to 350 mm on-site. The stop screw sets end position but is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X450-100S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X450-100S replacement — usually within 7-8 hours.