This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X400-30, 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 SUJ100X400-30
The AirTAC Airtac SUJ Adjustable Cylinder SUJ100X400-30 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 SAUJ100X400-30, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke400 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUJ100X400-30
- 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 SUJ100X400-30
The AirTAC SUJ100X400-30 is a double-acting double-rod adjustable-stroke profile cylinder, now discontinued and replaced by the SAUJ100X400-30. It features a 100mm bore, 1/2" port, and an external stop screw that lets you trim the extend stroke by up to 30mm on-site, yielding a usable 370-400mm extend window. The nominal 400mm stroke represents the maximum extension. This stop screw sets the end position mechanically and is not a load lock; an external rod lock is required to hold loads on air loss. The SAUJ direct maintains the exact bore, stroke, force, port, and SC-series FA/LB mounting.
Two key upgrades in the SAUJ replacement include compatibility with current CMSG/DMSG/EMSG sensors (this SUJ used legacy CS1-B/DS1-B) and the availability of the SAUF built-in-valve variant. This SKU lacks a magnet, so it cannot accept a magnetic switch. For the 400mm stroke, external guides are recommended to prevent rod bending under side loads.
Airtac SUJ Adjustable Cylinder SUJ100X400-30 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ100X400-30 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X400-30 |
| 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 SAUJ100X400-30 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 SAUJ100X400-30 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 SUJ100X400-30
| 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 SUJ100X400-30 Is Used
Press Fit Tuning
Allows operators to dial in the exact 370-400mm extend position on-site for pressing bearings without machining hard stops.
Variable Length Diverter
Trimming the extend stroke up to 30mm accommodates different package sizes on a packaging line requiring flexible end positions.
Adjustable Height Stop
Sets a precise mechanical end position for pallets, where the stop screw acts as an external bumper rather than a load lock.
Replacing the Airtac SUJ Adjustable Cylinder SUJ100X400-30 with the SAUJ100X400-30
To replace the discontinued SUJ100X400-30, order the direct replacement SAUJ100X400-30, which preserves the 100mm bore, 400mm stroke, 1/2" port, and FA/LB mounting. Choose the 30mm adjust window if your application requires field-tuning the extend stroke between 370mm and 400mm. Because this model lacks a magnet (-S), it cannot support legacy CS1-B/DS1-B or modern CMSG/DMSG/EMSG sensors; for position detection, select the -S version of the SAUJ. Given the 400mm stroke, ensure external guides are used to mitigate side-load and rod-bending risks.
Replacement checklist
- ✓ Same bore / stroke → SAUJ100X400-30
- ✓ 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 SUJ100X400-30 FAQ
Yes, the SUJ100X400-30 is discontinued. The direct replacement is the SAUJ100X400-30, which shares the same 100mm bore, 400mm stroke, 30mm adjust window, 1/2" port, and FA/LB mounting. The SAUJ also upgrades sensor compatibility to CMSG/DMSG/EMSG and offers an SAUF built-in-valve variant.
The external stop screw provides a 30mm adjust window, allowing the extend stroke to be shortened from the 400mm maximum down to 370mm on-site.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ100X400-30
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X400-30 replacement — usually within 7-8 hours.