This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ50X100-20, 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 SUJ50X100-20
The AirTAC Airtac SUJ Adjustable Cylinder SUJ50X100-20 is a double-acting profile-type standard cylinder with a Ø50mm bore and 100mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ50X100-20, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke100 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X100-20
- 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 SUJ50X100-20
The AirTAC SUJ50X100-20 is a double-acting double-rod adjustable-stroke profile cylinder, now discontinued and superseded by the direct replacement SAUJ50X100-20. An external stop screw lets you trim the extend stroke by up to 20 mm on-site, giving a usable 80-100 mm range from the 100 mm nominal maximum. The compact extruded aluminum barrel is shorter than an ISO 15552 cylinder of the same 50 mm bore. This SKU has no magnet (-S omitted) and cannot take a switch.
The SAUJ upgrade retains the exact bore, stroke, force, port, and FA/LB mounting, but switches to current CMSG/DMSG/EMSG sensors from the legacy CS1-B/DS1-B. The stop screw sets end position but is not a load lock; use an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ50X100-20 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X100-20 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X100-20 |
| Bore size | Ø50 mm |
| Stroke | 100 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M16×1.5 |
| 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, 21 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAUJ50X100-20 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAUJ50X100-20 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 SUJ50X100-20
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×100 | 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 SUJ50X100-20 Is Used
Variable Depth Boring
Trimming the 100 mm extend stroke by up to 20 mm on-site allows precise depth control for boring or pressing operations without swapping cylinders.
Adjustable Diverter Arms
Field-tune the actuator reach between 80 and 100 mm to handle changing package sizes on a conveyor line quickly and efficiently.
Custom Position Stops
Use the external stop screw to set exact end positions for shelving or lifting mechanisms where fixed stroke cylinders lack flexibility.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X100-20 with the SAUJ50X100-20
To replace the discontinued SUJ50X100-20, order the direct replacement SAUJ50X100-20, which matches the 50 mm bore, 100 mm stroke, 20 mm adjust window, 1/4" port, and FA/LB mounting. Choose the 20 mm adjust window when you need on-site extend tuning between 80-100 mm without adding an external stop. For sensing, the SAUJ uses CMSG/DMSG/EMSG sensors (this SUJ used CS1-B/DS1-B). Note this non-magnetic SKU cannot take a switch. For strokes >=300 mm, verify side-load limits. The stop screw sets end position but does not hold loads on air loss; add an external rod lock for vertical holding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X100-20
- ✓ 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 SUJ50X100-20 FAQ
Yes, the SUJ50X100-20 is discontinued. The direct replacement is the SAUJ50X100-20, which matches the 50 mm bore, 100 mm stroke, 20 mm adjust window, 1/4" port, and FA/LB mounting. The SAUJ uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B.
The external stop screw provides a 20 mm adjust window, allowing you to shorten the 100 mm extend stroke to 80 mm on-site. The stop sets end position but is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ50X100-20
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ50X100-20 replacement — usually within 7-8 hours.