This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X50-20S, 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 SUJ100X50-20S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ100X50-20S 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 SAUJ100X50-20S, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke50 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUJ100X50-20S
- 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 SUJ100X50-20S
The AirTAC SUJ100X50-20S is a discontinued 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. With a nominal 50 mm stroke, the usable extend range is 30 to 50 mm. The stop screw sets the end position mechanically; it is not a load lock, and a plain cylinder will drift on air loss. For held loads, specify an external rod lock or pilot-operated check valve.
The 1/2" port and 29 mm adjustable cushions handle 30-800 mm/s speeds. The direct replacement is the SAUJ100X50-20S, sharing the same force, port, and FA/LB mounting, but upgrading the legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches.
Airtac SUJ Adjustable Cylinder SUJ100X50-20S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ100X50-20S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X50-20S |
| 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 SAUJ100X50-20S 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 SAUJ100X50-20S 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 SUJ100X50-20S
| 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 SUJ100X50-20S Is Used
Press Fit Tuning
Adjusting the extend stroke on-site by up to 20 mm allows operators to dial in the exact pressing depth for bearings without swapping cylinders.
Variable Stop Positioning
Trimming the extend stroke lets a diverter gate meet different package sizes on the fly, providing a hard mechanical stop for each format.
Sealing Head Calibration
Field-tuning the extend end position ensures a sealing jaw contacts packages precisely, compensating for material thickness variations.
Replacing the Airtac SUJ Adjustable Cylinder SUJ100X50-20S with the SAUJ100X50-20S
To replace the discontinued SUJ100X50-20S, order the direct replacement SAUJ100X50-20S, which matches the 100 mm bore, 50 mm nominal stroke, 20 mm adjust window, 1/2" port, and FA/LB mounting. Choose the 20 mm adjust window when you need field tuning of the extend end position; the SAUJ beats a fixed SAU plus external stop by integrating the screw cleanly. Because this unit has the -S magnet, swap the legacy CS1-B/DS1-B switches for CMSG/DMSG/EMSG sensors. For stroke lengths >=300 mm, verify side-load limits to prevent rod binding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ100X50-20S
- ✓ 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 SUJ100X50-20S FAQ
Yes, the SUJ100X50-20S is discontinued. The direct replacement is the SAUJ100X50-20S. It shares the same 100 mm bore, 50 mm nominal stroke, 20 mm adjust window, 1/2" port, and FA/LB mounting. The SAUJ also upgrades the legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches.
The external stop screw window is 20 mm, allowing you to trim the 50 mm nominal extend stroke down to 30 mm on-site. The stop sets end position but is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ100X50-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X50-20S replacement — usually within 7-8 hours.