This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ25X120-50S, with the same bore, stroke, output force, port and mounting, so it fits the same application. The MBLJ replacement upgrades to a riveted rolling-packed body and CMSG / DMSG / EMSG sensors (the MAL used CS1-M / DS1-M).
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X120-50S
The AirTAC MALJ25 Adjustable Mini Air Cylinder MALJ25X120-50S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 50 mm, giving a usable end-position window from 70 to 120 mm. This model is discontinued — the direct replacement is the MBLJ25X120-50S.
- BoreØ25 mm
- Stroke120 mm
- Adjust window70–120 mm
- Port sizeG1/8
- Rod threadM10×1.25
- StatusDiscontinued → MBLJ25X120-50S
- 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 MALJ25 Adjustable Mini Air Cylinder MALJ25X120-50S
The AirTAC MALJ25X120-50S is a discontinued double-acting double-rod mini cylinder with a rear adjustable stroke. The 50 mm adjust code creates a usable travel window of 70-120 mm. The direct replacement is the MBLJ25X120-50S, matching the 25 mm bore, 120 mm stroke, and G1/8 port.
This bore 25 unit uses a 10 mm carbon-steel rod with a 20 um hard chrome plating and a fixed rubber bumper. The rear screw is a travel stop, not a lock; it sets the end position but cannot hold a load without live air. Upgrading to the MBLJ changes the threaded covers to a riveted rolling-packed body, and the -S magnet switches from the older CS1-M / DS1-M to the CMSG / DMSG / EMSG sensor family.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X120-50S Technical Specifications
| Model | Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X120-50S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ25X120-50S |
| Bore size | Ø25 mm |
| Stroke | 120 mm |
| Adjustable window | 70 – 120 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.1 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Fixed rubber bumper |
| Max standard stroke | Up to 300 mm |
The rear adjuster is a travel stop, not a lock — it sets the end position but does not hold the load without live air. No back-cover code and no SDB on adjustable-stroke. The MBLJ25X120-50S carries the same ratings.
Theoretical Output Force (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 206 N | 206 N |
| 0.7 MPa | 289 N | — |
| Max (@1.0 MPa) | 42 kgf | |
MALJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative), lower than a single-rod MAL push of the same bore. The MBLJ25X120-50S matches these values.
Model Code: Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X120-50S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 25 | Bore size in mm (20/25/32/40). |
| ×120 | Nominal stroke length in mm. |
| -50 | Adjustable amount: trim the end to a 70–120 mm window. |
| S | Optional magnet for a CS1-M / DS1-M sensor (MBLJ uses CMSG/DMSG/EMSG). |
Replacement: MALJ → MBLJ. No back-cover (CA/U/CM) and no SDB. Mounting: FA / LB.
Where the Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X120-50S Is Used
Carton Flap Tucking
Adjusts the tucker arm end position on a packaging line to clear varying box heights, relying on the 206 N pull force to retract the arm cleanly.
Aluminum Extrusion Notching
Sets a precise 90 mm stop window to notch profiles without bottoming out the tool, letting the fixed rubber bumper absorb the 0.7 MPa impact.
Replacing the Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X120-50S with MBLJ25X120-50S
To replace this MALJ25X120-50S with the MBLJ25X120-50S, confirm the 25 mm bore, 120 mm stroke, 50 mm adjust code, PT thread, and FA or LB mounting (there is no back cover or SDB option). The adjuster is a stop, not a lock, so add an external lock for held loads.
Upgrade checklist
- ✓ Order the MBLJ25X120-50S (same bore/stroke/adjust)
- ✓ Same 70–120 mm adjustable window
- ✓ Adjuster is a stop, not a lock
- ✓ No back cover / SDB — plan an FA/LB mount
- ✓ Sensor: swap CS1-M/DS1-M → CMSG/DMSG/EMSG
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.1 – 1.0 MPa operating pressure.
- check The rear adjuster sets the end position — it is not a load lock.
- check No back-cover / SDB on adjustable-stroke — use FA / LB.
- check Front/rear covers are threaded — not for field disassembly.
- check For new builds, specify the MBLJ25X120-50S instead of this discontinued model.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X120-50S FAQ
Yes, the MALJ25X120-50S is discontinued. The direct replacement is the MBLJ25X120-50S, which matches the 25 mm bore, 120 mm stroke, 50 mm adjust code, and G1/8 port. The MBLJ upgrades the construction to a riveted rolling-packed body and changes the magnet sensor family from CS1-M / DS1-M to CMSG / DMSG / EMSG.
The usable stroke window is 70-120 mm, set by the 50 mm rear adjuster. The adjuster is a travel stop, not a lock, and the fixed rubber bumper softens the end impact.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ25X120-50S replaces this model 1:1.
Fast Dispatch
MBLJ replacements are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Recommended AirTAC MBLJ Replacements
Request a Quote (Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X120-50S → MBLJ25X120-50S)
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