This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X400-100S, 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 SUJ40X400-100S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X400-100S is a double-acting profile-type standard cylinder with a Ø40mm bore and 400mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X400-100S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke400 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X400-100S
- 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 SUJ40X400-100S
The AirTAC SUJ40X400-100S is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 100 mm on-site, yielding a usable 300-400 mm extension from the 400 mm nominal maximum. The direct replacement is the SAUJ40X400-100S, which matches the bore, stroke, force, and FA/LB mounting.
The SAUJ upgrade transitions from legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches while retaining the compact profile barrel. Remember the stop screw sets end position only; it is not a load lock, so add an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ40X400-100S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X400-100S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X400-100S |
| Bore size | Ø40 mm |
| Stroke | 400 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 SAUJ40X400-100S 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 SAUJ40X400-100S 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 SUJ40X400-100S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×400 | 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 SUJ40X400-100S Is Used
Variable-Length Ejection
Tuning the ejection distance on the fly by up to 100 mm to clear changing part geometries without swapping the entire cylinder.
Adjustable Diverter Stroke
Trimming the extend stroke from 400 mm down to 300 mm to deflect varying package widths on a conveyor line.
Variable-Depth Pallet Stops
Dialing in the exact stop position for mixed pallet depths by shortening the extend stroke on-site.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X400-100S with the SAUJ40X400-100S
To replace the discontinued SUJ40X400-100S, use the exact direct replacement SAUJ40X400-100S, keeping the 40 mm bore, 400 mm stroke, 100 mm adjust window, and 1/4" port. Choose the 100 mm adjust window if you need to trim the extend stroke on-site from 400 mm down to 300 mm. Mounting is compatible with AirTAC SC series FA and LB brackets. Because this has a -S magnet, swap the legacy CS1-B/DS1-B switches for CMSG/DMSG/EMSG sensors on the SAUJ. At 400 mm stroke, support the rod against side-load bending with external guides. The stop screw sets end position but does not lock the load; use an external rod lock for holding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X400-100S
- ✓ 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 SUJ40X400-100S FAQ
Yes, the SUJ40X400-100S is discontinued. The direct replacement is the SAUJ40X400-100S, which matches the 40 mm bore, 400 mm stroke, 100 mm adjust window, 1/4" port, and FA/LB mounting. You must upgrade the -S magnet sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches.
The external stop screw window is 100 mm, allowing you to trim the 400 mm nominal extend stroke down to 300 mm on-site. The stop sets end position only and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X400-100S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X400-100S replacement — usually within 7-8 hours.