This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X50-20, 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 SUJ100X50-20
The AirTAC Airtac SUJ Adjustable Cylinder SUJ100X50-20 is a double-acting profile-type standard cylinder with a Ø100mm bore and 50mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ100X50-20, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke50 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUJ100X50-20
- 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 SUJ100X50-20
The AirTAC SUJ100X50-20 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 30-50 mm stroke from the 50 mm nominal maximum. The stop screw strictly sets the end position; it is not a load lock, so use an external rod lock for held loads.
The direct replacement is the SAUJ100X50-20, matching the bore, stroke, force, port, and SC-series FA/LB mounting. Upgrading to the SAUJ allows use of current CMSG/DMSG/EMSG sensors, whereas this legacy SUJ used CS1-B/DS1-B switches. As this non-magnetic SKU lacks a sensor groove, it cannot take a switch.
Airtac SUJ Adjustable Cylinder SUJ100X50-20 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ100X50-20 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X50-20 |
| Bore size | Ø100 mm |
| Stroke | 50 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 SAUJ100X50-20 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 SAUJ100X50-20 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 SUJ100X50-20
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×50 | 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 SUJ100X50-20 Is Used
Press Fit Tuning
Allows operators to dial in the exact 30-50 mm extend position for seating bearings without swapping physical spacers.
Variable Transfer Stops
Adjusts the extended stop finger length on the fly to accommodate different package widths on a single line.
Adjustable Sealing Jaws
Trims the jaw closure stroke precisely to prevent crushing varying product thicknesses during the packaging cycle.
Replacing the Airtac SUJ Adjustable Cylinder SUJ100X50-20 with the SAUJ100X50-20
Choose the 20 mm adjust window if your mechanism requires field-tuning the extend stroke between 30 and 50 mm. Because this SKU lacks a magnet, it cannot accept sensors; if sensing is needed, select an SAUJ with the -S option and use CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B. For strokes of 300 mm or longer, verify your side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same bore / stroke → SAUJ100X50-20
- ✓ 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 SUJ100X50-20 FAQ
Yes, the SUJ100X50-20 is discontinued. The direct replacement is the SAUJ100X50-20, which matches the 100 mm bore, 50 mm stroke, 20 mm adjust window, 1/2 inch port, and FA/LB mounting. The SAUJ also supports current CMSG/DMSG/EMSG sensors.
The double-acting double-rod SUJ100X50-20 pushes 3927 N and pulls 3681 N at 0.5 MPa, pushing 5497 N at 0.7 MPa and 7068 N at 0.9 MPa, with a theoretical max of 801 kgf. The external stop screw provides a 20 mm adjust window, shortening the 50 mm nominal extend stroke down to 30 mm on-site. The stop sets end position only; it is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ100X50-20
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X50-20 replacement — usually within 7-8 hours.