This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ25X120-40S, 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 MALJ25X120-40S
The AirTAC MALJ25 Adjustable Mini Air Cylinder MALJ25X120-40S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 40 mm, giving a usable end-position window from 80 to 120 mm. This model is discontinued — the direct replacement is the MBLJ25X120-40S.
- BoreØ25 mm
- Stroke120 mm
- Adjust window80–120 mm
- Port sizeG1/8
- Rod threadM10×1.25
- StatusDiscontinued → MBLJ25X120-40S
- 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 MALJ25X120-40S
The AirTAC MALJ25X120-40S is a discontinued double-acting double-rod mini cylinder with a rear adjustable stop. It provides a usable stroke window of 80-120 mm by trimming up to 40 mm at the rear screw. The direct replacement is the MBLJ25X120-40S, matching the bore, stroke, adjust code, G1/8 port, and FA/LB mounting.
This -S variant includes a magnet for CS1-M or DS1-M switches; the MBLJ upgrade shifts to CMSG, DMSG, or EMSG sensors. The original MALJ uses threaded covers, while the MBLJ features a riveted rolling-packed body. The rear adjuster is a travel stop, not a lock; it sets the end position but cannot hold a load without live air. Impact is softened by a fixed rubber bumper, as there is no adjustable air cushion.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X120-40S Technical Specifications
| Model | Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X120-40S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ25X120-40S |
| Bore size | Ø25 mm |
| Stroke | 120 mm |
| Adjustable window | 80 – 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 MBLJ25X120-40S 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 MBLJ25X120-40S matches these values.
Model Code: Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X120-40S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 25 | Bore size in mm (20/25/32/40). |
| ×120 | Nominal stroke length in mm. |
| -40 | Adjustable amount: trim the end to a 80–120 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 MALJ25X120-40S Is Used
Carton Flap Folder
Fine-tune the folding arm reach on a packaging line; the 40 mm rear trim lets operators adjust flap closure geometry on the fly for varying box widths using the 206 N pull force.
Aluminum Extrusion Gauge
Set a precise end-position stop for extrusion cut-off saws, using the rear screw to adjust the 120 mm stroke window perfectly to the profile length without bolting on external stops.
Replacing the Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X120-40S with MBLJ25X120-40S
To replace this MALJ25X120-40S with the MBLJ25X120-40S, confirm the 25 mm bore, 120 mm stroke, 40 mm adjust code, G1/8 port, and FA/LB mounting. Note that no back cover or SDB is used. The -S magnet requires changing from CS1-M/DS1-M to CMSG/DMSG/EMSG sensors. The adjuster is a stop, not a lock, so use an external lock for held loads.
Upgrade checklist
- ✓ Order the MBLJ25X120-40S (same bore/stroke/adjust)
- ✓ Same 80–120 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 MBLJ25X120-40S instead of this discontinued model.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X120-40S FAQ
Yes, the MALJ25X120-40S is discontinued. The direct replacement is the MBLJ25X120-40S, which matches the 25 mm bore, 120 mm stroke, 40 mm adjust code, G1/8 port, and FA/LB mounting. The MBLJ uses a riveted rolling-packed body instead of threaded covers, and the -S magnet switches from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The -40 adjust code means you can trim up to 40 mm at the rear screw, creating a usable stroke window of 80-120 mm. The adjuster is a travel stop, not a lock; it sets the end position but does not hold the load without live air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ25X120-40S 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 MALJ25X120-40S → MBLJ25X120-40S)
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