This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X350-100, 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 SUJ40X350-100
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X350-100 is a double-acting profile-type standard cylinder with a Ø40mm bore and 350mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X350-100, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke350 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X350-100
- 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 SUJ40X350-100
The AirTAC SUJ40X350-100 is a double-acting double-rod profile cylinder with a 40mm bore and 350mm maximum stroke. An external stop screw lets you trim the extend stroke on-site by up to 100mm, yielding a usable 250-350mm window. 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 SAUJ40X350-100, retaining the same body, force, 1/4" port, and FA/LB mounting. The SAUJ upgrades sensing to current CMSG/DMSG/EMSG switches (this SKU lacks a magnet and cannot take sensors) from the legacy CS1-B/DS1-B used on the SUJ. At 350mm stroke, use external guides to prevent rod bending and side-load wear.
Airtac SUJ Adjustable Cylinder SUJ40X350-100 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X350-100 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X350-100 |
| Bore size | Ø40 mm |
| Stroke | 350 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 SAUJ40X350-100 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 SAUJ40X350-100 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 SUJ40X350-100
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×350 | 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 SUJ40X350-100 Is Used
Variable Depth Boring
Needs field stroke tuning to set precise boring depths on-site without swapping cylinders, trimming the extend stroke up to 100mm for different material thicknesses.
Adjustable Diverter Arms
Requires adjusting the extend stroke on the fly to accommodate changing package sizes on a conveyor line, using the stop screw to set the exact reach.
Variable Position Stops
Demands field stroke tuning to position physical stops at varying distances along a 250-350mm range, adapting the layout to different pallet dimensions.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X350-100 with the SAUJ40X350-100
To replace the discontinued SUJ40X350-100, order the direct replacement SAUJ40X350-100, which matches the 40mm bore, 350mm nominal stroke, 100mm adjust window, 1/4" port, and FA/LB mounts. Choose the 100mm adjust window if you need to trim the extend stroke down to 250mm on-site; this stop screw sets end position but does not lock the load. Because this SKU has no magnet, it cannot take sensors; the SAUJ requires CMSG/DMSG/EMSG switches instead of the old CS1-B/DS1-B. For the 350mm stroke, add external guides to prevent rod bending and side-load wear. For load holding without live air, install an external rod lock or pilot-operated check valve.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X350-100
- ✓ 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 SUJ40X350-100 FAQ
Yes, the SUJ40X350-100 is discontinued. The direct replacement is the SAUJ40X350-100, which matches the 40mm bore, 350mm stroke, 100mm adjust window, 1/4" port, and FA/LB mounting. The SAUJ uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B.
The external stop screw window is 100mm, allowing you to shorten the extend stroke from the 350mm maximum down to 250mm on-site. The stop sets end position but is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X350-100
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X350-100 replacement — usually within 7-8 hours.