This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X300-20S, 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 SUJ100X300-20S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ100X300-20S is a double-acting profile-type standard cylinder with a Ø100mm bore and 300mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ100X300-20S, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke300 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUJ100X300-20S
- 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 SUJ100X300-20S
The AirTAC SUJ100X300-20S is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 20 mm on-site, yielding a usable 280-300 mm stroke. The nominal 300 mm is the maximum. It features a 100 mm bore, a Ø25 mm piston rod, M20x1.5 rod-end thread, and a 1/2" port.
The SAUJ upgrade adopts current CMSG/DMSG/EMSG sensors, replacing this model's legacy CS1-B/DS1-B switches. Remember the stop screw sets end position only; it is not a load lock, so use an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ100X300-20S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ100X300-20S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X300-20S |
| Bore size | Ø100 mm |
| Stroke | 300 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 SAUJ100X300-20S 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 SAUJ100X300-20S 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 SUJ100X300-20S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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 SUJ100X300-20S Is Used
Press Fit Tuning
Field-trim the 20 mm extend window to dial in exact pressing depth for bearings without machining hard stops.
Variable Length Diverter
Adjust the extend stroke on-site to deflect different package sizes on a conveyor line as product mix changes.
Adjustable Height Stop
Fine-tune the end position of a 300 mm stroke pallet stop to accommodate varying load heights in a cell.
Replacing the Airtac SUJ Adjustable Cylinder SUJ100X300-20S with the SAUJ100X300-20S
To replace this discontinued SUJ100X300-20S, specify the direct replacement SAUJ100X300-20S, keeping the 100 mm bore, 300 mm nominal stroke, 20 mm adjust window, 1/2" port, and FA/LB mounts. The -S suffix means a piston magnet is present; you must migrate from legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors. Choose the 20 mm adjust window if you need field-tuning of the extend end-position; for fixed points, a standard SAU cylinder suffices. Because the stroke is 300 mm, add external guides to prevent rod bending and manage side loads. The stop screw sets end position but does not lock the load on air loss—install a pilot-operated check valve or external rod lock for vertical holding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ100X300-20S
- ✓ 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 SUJ100X300-20S FAQ
Yes, the AirTAC SUJ100X300-20S is discontinued. The direct replacement is the SAUJ100X300-20S, matching the 100 mm bore, 300 mm stroke, 20 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 switches.
It is double-acting double-rod with a 1/2" port. The external stop screw trims the extend stroke by up to 20 mm on-site, giving a 280-300 mm usable stroke. The stop sets end position only and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ100X300-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X300-20S replacement — usually within 7-8 hours.