This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUJ50X125-10 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUJ50X125-10 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 SUJ50X125-10
The AirTAC Airtac SUJ Adjustable Cylinder SUJ50X125-10 is a double-acting profile-type standard cylinder with a Ø50mm bore and 125mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUJ50X125-10, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke125 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X125-10
About the Airtac SUJ Adjustable Cylinder SUJ50X125-10
The AirTAC SUJ50X125-10 is a double-acting single-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 10 mm on-site, yielding a usable 115-125 mm extension out of the 125 mm nominal maximum. This compact aluminum barrel is shorter than a standard cylinder of the same bore, operating at 30-800 mm/s with a 1/4" port and M16x1.5 rod thread. The stop screw strictly sets the end position; it is not a load lock, and a plain cylinder drifts on air loss, requiring an external rod lock for held loads.
This SUJ model is discontinued; the exact drop-in replacement is the SAUJ50X125-10, preserving the 50 mm bore, 125 mm stroke, 1/4" port, and FA/LB mounting compatibility with the SC series. The SAUJ upgrade transitions to current CMSG/DMSG/EMSG sensors, whereas this legacy unit used CS1-B/DS1-B switches. Without a -S suffix, this specific SKU has no magnet and cannot take a magnetic switch. Delivering 982 N push and 825 N pull at 0.5 MPa, the computed safe working load is approximately 589 N (60% of push), translating to a 50 kg vertical lift with a 2:1 margin.
Airtac SUJ Adjustable Cylinder SUJ50X125-10 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X125-10 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X125-10 |
| Bore size | Ø50 mm |
| Stroke | 125 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 SAUJ50X125-10 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 SAUJ50X125-10 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 SUJ50X125-10
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×125 | 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 SUJ50X125-10 Is Used
Diverter Gate Positioning
Fine-tunes the extend stroke by up to 10 mm on-site to perfectly align a diverter gate without machining spacer plates.
Product Stopping Fences
Adjusts the end-stop fence position on a conveyor to accommodate varying package lengths on the production line.
Sealing Jaw Clearance
Trims the extend stroke to set precise jaw clearance for packaging different film thicknesses without reprogramming the controller.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X125-10 with the SAUJ50X125-10
To replace the discontinued SUJ50X125-10, order the drop-in SAUJ50X125-10, which matches the 50 mm bore, 125 mm stroke, 10 mm adjust window, 1/4" port, and FA/LB mounts. When sizing both ways, the neighbouring 40 mm bore yields 628 N push at 0.5 MPa, while the 63 mm bore provides 1559 N; choose based on your exact force needs. The 10 mm adjust window is ideal for fine-tuning the extend end position without adding external stops. Because this SKU lacks a magnet, you cannot mount sensors; if sensing is required, select an SAUJ with the -S suffix to utilize CMSG/DMSG/EMSG switches. For strokes of 300 mm or longer, carefully verify side-load limits to prevent guide bushing wear.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X125-10
- ✓ 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 SUJ50X125-10 FAQ
Yes, the SUJ50X125-10 is discontinued. The exact drop-in replacement is the SAUJ50X125-10, which matches the 50 mm bore, 125 mm stroke, 10 mm adjust window, and 1/4" port. The SAUJ also supports the SAUF built-in-valve variant and uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B.
The 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 allows you to trim the extend stroke by up to 10 mm on-site, giving a usable extension range of 115-125 mm. The stop sets end position only and does not lock the load.
Related AirTAC SAU Cylinders
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