This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ40X125-100, 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 MALJ40 Adjustable Mini Cylinder MALJ40X125-100
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-100 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 100 mm, giving a usable end-position window from 25 to 125 mm. This model is discontinued — the direct replacement is the MBLJ40X125-100.
- BoreØ40 mm
- Stroke125 mm
- Adjust window25–125 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X125-100
- 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 MALJ40 Adjustable Mini Cylinder MALJ40X125-100
The AirTAC MALJ40X125-100 is a discontinued double-acting double-rod cylinder with a rear adjustable stroke stopper. It has a 40mm bore, 125mm stroke, and a 100mm adjust code, creating a usable extension window of 25-125mm. The direct replacement is the MBLJ40X125-100, matching the bore, stroke, adjust code, and G1/4 port.
This SKU lacks the -S magnet option, so it cannot accept a position sensor. The original MALJ uses threaded covers and a fixed rubber bumper, whereas the MBLJ upgrade features a riveted rolling-packed body. The rear adjuster is a travel stop that sets the end position; it does not hold the load without live air pressure.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-100 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-100 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X125-100 |
| Bore size | Ø40 mm |
| Stroke | 125 mm |
| Adjustable window | 25 – 125 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 500 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 MBLJ40X125-100 carries the same ratings.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 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 MBLJ40X125-100 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-100
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×125 | Nominal stroke length in mm. |
| -100 | Adjustable amount: trim the end to a 25–125 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 MALJ40 Adjustable Mini Cylinder MALJ40X125-100 Is Used
Press Fit Tooling
Dial in the 25-125mm reach on a bearing press fixture.
PCB Router Depth Stop
Set a specific end position for a routing spindle. The 100mm rear adjuster lets operators trim depth on the fly without machining new spacers.
Carton Flap Folding
Tune the flap fold arm stroke for varying box heights. The fixed rubber bumper absorbs the 880N impact force at 0.7 MPa at the end of travel.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-100 with MBLJ40X125-100
To replace this MALJ40X125-100, order the MBLJ40X125-100. Confirm the 40mm bore, 125mm stroke, 100mm adjust code, PT G1/4 port, and M12x1.25 rod-end thread. Mounting is Basic, FA, or LB only, as there is no back-cover or SDB option. Since this SKU lacks the -S magnet, it cannot take a sensor; if you need sensing on the MBLJ, specify the -S code and upgrade from the old CS1-M/DS1-M switches to the CMSG/DMSG/EMSG family.
If you need more force, the 40mm is the largest available in this series. The 100mm adjuster is a travel stop, not a lock, so add an external locking mechanism for held loads. Strokes under 300mm keep side-load rod-bending risk low.
Upgrade checklist
- ✓ Order the MBLJ40X125-100 (same bore/stroke/adjust)
- ✓ Same 25–125 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 MBLJ40X125-100 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-100 FAQ
Yes, the MALJ40X125-100 is discontinued. The direct replacement is the MBLJ40X125-100, matching the 40mm bore, 125mm stroke, 100mm adjust code, and G1/4 port. The MBLJ upgrades the construction with a riveted rolling-packed body instead of threaded covers.
The usable stroke window is 25-125mm via the 100mm rear adjuster. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ40X125-100 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 MALJ40 Adjustable Mini Cylinder MALJ40X125-100 → MBLJ40X125-100)
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