This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUJ50X155-100S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUJ50X155-100S 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 SUJ50X155-100S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ50X155-100S is a double-acting profile-type standard cylinder with a Ø50mm bore and 155mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUJ50X155-100S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke155 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X155-100S
About the Airtac SUJ Adjustable Cylinder SUJ50X155-100S
The AirTAC SUJ50X155-100S is a double-acting single-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 100 mm on-site, yielding a usable 55-155 mm extension window from the 155 mm nominal maximum. The 50 mm bore delivers 982 N push and 825 N pull at 0.5 MPa, rising to 1767 N push at 0.9 MPa, via a 1/4" port and M16x1.5 rod thread. This discontinued unit is replaced drop-in by the SAUJ50X155-100S, matching bore, stroke, force, and SC-series FA/LB mounting.
The SAUJ upgrade adopts current CMSG/DMSG/EMSG sensors, replacing this model's legacy CS1-B/DS1-B switches, and introduces the SAUF built-in-valve variant the SU line lacked. For sizing, a safe working load is roughly 589 N (60% of the 0.5 MPa push), translating to a 50 kg vertical lift with a 2:1 margin. Note the stop screw sets end position only; it is not a load lock, so use an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ50X155-100S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X155-100S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X155-100S |
| Bore size | Ø50 mm |
| Stroke | 155 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 SAUJ50X155-100S 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 SAUJ50X155-100S 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 SUJ50X155-100S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×155 | 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 SUJ50X155-100S Is Used
Variable Pitch Forming
Bending or pressing parts where the extend stroke must be tuned on-site between 55 and 155 mm to accommodate different material thicknesses without changing the cylinder.
Adjustable Transfer Diverter
Routing packages of varying sizes on a line by field-adjusting the actuator's extend stop down 100 mm to hit specific diverter angles precisely.
Custom Depth Sorting Pusher
Pushing items into sorting bins of different depths, using the external stop screw to shorten the extend stroke on the fly for each batch run.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X155-100S with the SAUJ50X155-100S
To replace the discontinued SUJ50X155-100S, order the drop-in SAUJ50X155-100S, which preserves the 50 mm bore, 155 mm max stroke, 100 mm adjust window, 1/4" port, and FA/LB mounting. When sizing both ways, the neighbouring 63 mm bore provides 1559 N push at 0.5 MPa if more force is needed, while the 40 mm bore offers 628 N if a smaller footprint suffices. Select the 100 mm adjust window if your application requires cutting the extend stroke down to a 55 mm minimum on-site. Because this is an -S model, you must migrate from legacy CS1-B/DS1-B sensors to the current CMSG/DMSG/EMSG switches on the SAUJ. For this 155 mm stroke, side-load is minimal, but for any stroke >=300 mm, ensure guide alignment to prevent rod binding. Remember the stop screw is not a lock; add an external rod lock for load holding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X155-100S
- ✓ 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 SUJ50X155-100S FAQ
Yes, the SUJ50X155-100S is discontinued. The exact drop-in replacement is the SAUJ50X155-100S, which matches the 50 mm bore, 155 mm max stroke, 100 mm adjust window, 1/4" port, and FA/LB mounting. You simply insert an A after the leading S. The new SAUJ also uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
The 50 mm bore double-acting single-rod cylinder 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 window is 100 mm, allowing you to trim the 155 mm nominal extend stroke down to a 55 mm usable minimum on-site. The stop sets end position only and is not a load lock.
Related AirTAC SAU Cylinders
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