This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUJ50X125-10S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUJ50X125-10S 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 SUJ50X125-10S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ50X125-10S 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 SAUJ50X125-10S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke125 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X125-10S
About the Airtac SUJ Adjustable Cylinder SUJ50X125-10S
The AirTAC SUJ50X125-10S is a double-acting single-rod profile cylinder with a 125 mm nominal stroke and a built-in piston magnet (-S). An external stop screw lets you trim the extend stroke by up to 10 mm on-site, yielding a usable 115-125 mm extension window for exact positioning without machining. The 50 mm bore features a 1/4" port, M16x1.5 rod thread, and delivers 982 N push / 825 N pull at 0.5 MPa. This SUJ series is discontinued; the exact drop-in replacement is the SAUJ50X125-10S, retaining the same bore, stroke, force, and SC-series FA/LB mounting.
The SAUJ upgrade transitions from legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches. For sizing, the 982 N push at 0.5 MPa yields a safe working load of ~589 N (60%), translating to a ~50 kg vertical lift with a 2:1 margin. Note that the stop screw sets the end position but is not a load lock; drifting occurs on air loss, requiring an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ50X125-10S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X125-10S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X125-10S |
| 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 SAUJ50X125-10S 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 SAUJ50X125-10S 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 SUJ50X125-10S
| 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 SUJ50X125-10S Is Used
Diverter Gate Trimming
Fine-tunes the extend stroke by up to 10 mm on-site to perfectly seat a pneumatic diverter gate against varying product sizes without re-engineering the fixture.
Carton Flap Folding
Adjusts the extend endpoint in the field to fold carton flaps of slightly different heights, ensuring crisp tuck-and-fold alignment on the packaging line.
Transfer Stop Positioning
Micro-adjusts the stop pin extension on a conveyor to accommodate mixed product lengths on the fly, preventing over-travel and ensuring precise indexing.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X125-10S with the SAUJ50X125-10S
To replace the discontinued SUJ50X125-10S, specify the SAUJ50X125-10S as a direct drop-in, keeping the 50 mm bore, 125 mm stroke, 1/4" port, and FA/LB mounts. The -S suffix means your legacy CS1-B/DS1-B sensors must be swapped to current CMSG/DMSG/EMSG switches. If sizing both ways, the neighbouring 63 mm bore offers higher force (1559 N push @0.5 MPa) while the 40 mm bore is smaller (628 N push @0.5 MPa). The 10 mm adjust window is ideal for micro-trimming the extend stroke; the stop screw sets end position but is not a lock. For stroke lengths >=300 mm, verify side-load constraints to prevent rod bending.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X125-10S
- ✓ 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 SUJ50X125-10S FAQ
Yes, the AirTAC SUJ50X125-10S is discontinued. The exact drop-in replacement is the SAUJ50X125-10S, which shares the same 50 mm bore, 125 mm nominal stroke, 10 mm adjust window, 1/4" port, and FA/LB mounting. The SAUJ also introduces the SAUF built-in-valve variant the SU line lacked.
The 50 mm bore provides 982 N push / 825 N pull @0.5 MPa, 1374 N push @0.7 MPa, and 1767 N push @0.9 MPa (max 200 kgf @1.0 MPa). The external stop screw allows trimming the extend stroke by up to 10 mm on-site (usable 115-125 mm). The -S suffix indicates a built-in magnet for legacy CS1-B/DS1-B sensors; the SAUJ replacement uses current CMSG/DMSG/EMSG switches. The stop sets end position but is not a load lock.
Related AirTAC SAU Cylinders
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