This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X120-50, 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 SUJ100X120-50
The AirTAC Airtac SUJ Adjustable Cylinder SUJ100X120-50 is a double-acting profile-type standard cylinder with a Ø100mm bore and 120mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ100X120-50, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke120 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUJ100X120-50
- 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 SUJ100X120-50
The AirTAC SUJ100X120-50 is a discontinued double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 50 mm on-site, yielding a usable 70-120 mm extend out of the 120 mm nominal maximum. The 1/2" port and M20x1.5 rod end handle high flow, while the 29 mm adjustable cushions absorb kinetic energy.
As this SKU is end-of-life, the direct replacement is the SAUJ100X120-50, matching the bore, stroke, force, and SC-series mounting. Note this variant lacks a magnet (-S), so it cannot accept a sensor; the SAUJ upgrade transitions to current CMSG/DMSG/EMSG switches from the legacy CS1-B/DS1-B. The stop screw sets end position only—it is not a load lock.
Airtac SUJ Adjustable Cylinder SUJ100X120-50 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ100X120-50 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X120-50 |
| Bore size | Ø100 mm |
| Stroke | 120 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 SAUJ100X120-50 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 SAUJ100X120-50 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 SUJ100X120-50
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×120 | 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 SUJ100X120-50 Is Used
Variable Stroke Pressing
Trimming the extend stroke by up to 50 mm on-site allows operators to dial in precise pressing depths for different material stacks without swapping the entire cylinder.
Adjustable Diverter Arms
A 70-120 mm extend window lets a single diverter accommodate changing package sizes on a packaging line, tuning the stop position externally via the screw.
Custom End-of-Stroke Stops
When test fixtures require slight positional variations between batches, the external stop screw provides field tuning that avoids machining custom spacers.
Replacing the Airtac SUJ Adjustable Cylinder SUJ100X120-50 with the SAUJ100X120-50
To replace the discontinued SUJ100X120-50, order the SAUJ100X120-50; it is a direct retaining the 1/2" port, 120 mm nominal stroke, and 50 mm adjust window. Choose the 50 mm adjust window if your fixture needs on-site extend tuning between 70 and 120 mm, which often beats machining a custom fixed-stroke SAU plus an external stop. Mounting uses FA or LB brackets (SC-series compatible). Because this specific SKU has no magnet, you cannot mount a reed switch; upgrading to the SAUJ allows modern CMSG/DMSG/EMSG sensors. For strokes of 300 mm or longer, verify side-load limits to prevent guide wear. The stop screw sets the end position but does not lock the load—add an external rod lock or pilot-operated check valve if air loss would cause drifting.
Replacement checklist
- ✓ Same bore / stroke → SAUJ100X120-50
- ✓ 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 SUJ100X120-50 FAQ
Yes, the SUJ100X120-50 is discontinued. The direct replacement is the SAUJ100X120-50, which matches the 100 mm bore, 120 mm stroke, 50 mm adjust window, 1/2" port, and force. The SAUJ also uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B.
The external stop screw trims the extend stroke by up to 50 mm on-site, giving a usable 70-120 mm extend. The stop sets position only and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ100X120-50
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X120-50 replacement — usually within 7-8 hours.