This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUJ50X100-20S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUJ50X100-20S in place of this model. 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 SUJ50X100-20S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ50X100-20S 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 drop-in replacement is the SAUJ50X100-20S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke100 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X100-20S
About the Airtac SUJ Adjustable Cylinder SUJ50X100-20S
The AirTAC SUJ50X100-20S is a double-acting, single-rod profile cylinder with an adjustable extend stroke. 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 50 mm bore delivers 982 N push and 825 N pull at 0.5 MPa, scaling to 1767 N push at 0.9 MPa. This compact profile barrel is shorter than an equivalent fixed-stroke unit and features a 1/4" port, M16x1.5 rod thread, and 21 mm adjustable cushions.
This SUJ50X100-20S model is discontinued and the exact drop-in replacement is the SAUJ50X100-20S, retaining the same bore, stroke, force, and FA/LB mounting. For your sizing, a safe working load is approximately 589 N (60% of the 0.5 MPa push), equating to a 50 kg vertical lift with a 2:1 margin. The stop screw sets the end position but is not a load lock; use an external rod lock for held loads. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B sensors, which must be upgraded to current CMSG/DMSG/EMSG switches on the SAUJ replacement.
Airtac SUJ Adjustable Cylinder SUJ50X100-20S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X100-20S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X100-20S |
| 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 SAUJ50X100-20S 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 SAUJ50X100-20S produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SUJ Adjustable Cylinder SUJ50X100-20S
| 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 SUJ50X100-20S Is Used
Probe Contact Tuning
Testing stations needing precise probe pressure can trim the extend stroke by up to 20 mm on-site to dial in exact contact depth without remachining stops.
Variable Length Diverter
Diverting different package lengths on a line is simplified by adjusting the cylinder's extend stroke within the 80-100 mm window to match product dimensions quickly.
Carton Flap Folding
Packaging lines use the adjustable stop to fine-tune the folding arm end position for varying carton profiles, ensuring crisp folds without reprogramming the PLC.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X100-20S with the SAUJ50X100-20S
To replace the discontinued SUJ50X100-20S, order the drop-in SAUJ50X100-20S. It matches the 50 mm bore, 100 mm nominal stroke, 20 mm adjust window, 1/4" port, and FA/LB mounting. When sizing, verify the force in both directions: the 50 mm bore gives 982 N push / 825 N pull at 0.5 MPa; if undersized, the neighbouring 63 mm bore offers 1559 N push / 1402 N pull, while the 40 mm bore gives 628 N push / 528 N pull. The 20 mm adjust window is ideal when you need precise field tuning of the extend stroke (80-100 mm) without adding an external stop. Because this is an -S model, you must replace the legacy CS1-B/DS1-B sensors with current CMSG/DMSG/EMSG switches. For strokes of 300 mm or longer, carefully evaluate side-load forces to prevent guide wear. Note that the stop screw only sets the end position; it does not lock the load on air loss.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X100-20S
- ✓ 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 SUJ50X100-20S FAQ
Yes, the SUJ50X100-20S is discontinued. The exact drop-in replacement is the SAUJ50X100-20S, which shares the same 50 mm bore, 100 mm stroke, 20 mm adjust window, 1/4" port, and FA/LB mounting. You must upgrade the -S piston magnet sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches.
The 50 mm bore provides 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and 1767 N push at 0.9 MPa. The external stop screw allows you to trim the extend stroke by up to 20 mm on-site, yielding a usable extend range of 80-100 mm from the 100 mm nominal maximum. The stop sets end position only and does not hold the load on air loss.
Related AirTAC SAU Cylinders
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