This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X400-75, 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 SUJ100X400-75
The AirTAC SUJ Adjustable Cylinder SUJ100X400-75 is a double-acting profile-type standard cylinder with a Ø100mm bore and 400mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ100X400-75, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke400 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUJ100X400-75
- 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 SUJ100X400-75
The AirTAC SUJ100X400-75 is a double-acting double-rod profile cylinder with an adjustable extend stroke. An external stop screw lets you trim the extend stroke by up to 75 mm on-site, giving a usable stroke window of 325-400 mm (the 400 mm nominal is the maximum). It features a 25 mm rod, M20x1.5 rod thread, 29 mm adjustable cushions, and a 1/2" port.
This SUJ model is discontinued; the direct replacement is the SAUJ100X400-75, matching the bore, stroke, force, port, and FA/LB mounting. The stop screw sets end position but is not a load lock; use an external rod lock for held loads. The SAUJ upgrade uses current CMSG/DMSG/EMSG sensors, whereas this legacy unit used CS1-B/DS1-B switches. This non-magnet version cannot take a switch.
Airtac SUJ Adjustable Cylinder SUJ100X400-75 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ100X400-75 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X400-75 |
| Bore size | Ø100 mm |
| Stroke | 400 mm |
| Acting type | Double acting |
| Port size | 1/2" |
| Rod thread | M20×1.5 |
| 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, 29 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAUJ100X400-75 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAUJ100X400-75 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 SUJ100X400-75
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 100 | 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 SUJ100X400-75 Is Used
Variable Pitch Indexing
Needs field stroke tuning to alter product pitch on a packaging line without swapping the entire actuator.
Adjustable Diverter Gate
Requires trimming the extend stroke by up to 75 mm on-site to accommodate changing package widths on the fly.
Variable Height Stops
Uses the 325-400 mm stroke window to set precise mechanical end positions for different pallet heights.
Replacing the Airtac SUJ Adjustable Cylinder SUJ100X400-75 with the SAUJ100X400-75
To replace the discontinued SUJ100X400-75, use the SAUJ100X400-75 direct: same 100 mm bore, 400 mm max stroke, 75 mm adjust window, 1/2" port, and FA/LB mounts. Choose the 75 mm adjust window if you need to tune the extend stroke down to 325 mm on-site, which often beats installing a fixed-stroke cylinder plus an external stop. Because the 400 mm stroke is long, ensure external guides to prevent rod bending under side-load. Note the SAUJ uses CMSG/DMSG/EMSG sensors (this non-magnet SUJ SKU takes no switch). Mounting is compatible with the AirTAC SC series only.
Replacement checklist
- ✓ Same bore / stroke → SAUJ100X400-75
- ✓ 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 SUJ100X400-75 FAQ
Yes, the SUJ100X400-75 is discontinued. The direct replacement is the SAUJ100X400-75, matching the 100 mm bore, 400 mm stroke, 75 mm adjust window, 1/2" port, and FA/LB mounting. The SAUJ also uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B.
The external stop screw window is 75 mm, allowing you to shorten the extend stroke from the 400 mm maximum down to 325 mm. The stop sets end position but is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ100X400-75
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