This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ40X125-75, 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 MALJ40X125-75
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-75 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 75 mm, giving a usable end-position window from 50 to 125 mm. This model is discontinued — the direct replacement is the MBLJ40X125-75.
- BoreØ40 mm
- Stroke125 mm
- Adjust window50–125 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X125-75
- 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 MALJ40X125-75
The AirTAC MALJ40X125-75 is a discontinued double-acting double-rod cylinder with a 40mm bore and 125mm stroke. It features a rear screw stopper that lets you trim the extend position by up to 75mm, giving a usable stroke window of 50-125mm. The direct replacement is the MBLJ40X125-75, which matches the bore, stroke, adjuster code, G1/4 port and FA/LB mounting.
The adjuster is a travel stop, not a lock; it sets the end position but does not hold load without live air. The fixed rubber bumper softens end impact but provides no adjustable cushion. This non-magnet SKU cannot take a position sensor. The original MALJ uses threaded covers and the MBLJ upgrade shifts to a riveted rolling-packed body for higher structural integrity.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-75 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-75 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X125-75 |
| Bore size | Ø40 mm |
| Stroke | 125 mm |
| Adjustable window | 50 – 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 MBLJ40X125-75 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 MBLJ40X125-75 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-75
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×125 | Nominal stroke length in mm. |
| -75 | Adjustable amount: trim the end to a 50–125 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 MALJ40X125-75 Is Used
PCB Router Depth Stop
Trim the extend position by up to 75mm to set a precise Z-axis depth for a PCB depaneling router, preventing the 16mm rod from crashing into the tooling base.
Carton Flap Folding
Adjust the end position on the fly to fold varying corrugated carton sizes on a packaging line, relying on the fixed rubber bumper to absorb the 880N impact at 0.7 MPa.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-75 with MBLJ40X125-75
To replace the MALJ40X125-75, select the MBLJ40X125-75 to keep the 40mm bore, 125mm stroke, 75mm adjust code, G1/4 port and FA/LB mounting. Since this SKU lacks the -S magnet, it cannot take a sensor; if you need sensing on the new MBLJ, add the -S code to use CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M. The rear adjuster sets end position but is not a lock; add an external lock for held loads.
At 125mm stroke, the 16mm rod handles normal loads well, but always verify side-load alignment to prevent rod-bending and premature seal wear.
Upgrade checklist
- ✓ Order the MBLJ40X125-75 (same bore/stroke/adjust)
- ✓ Same 50–125 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 MBLJ40X125-75 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-75 FAQ
Yes, the MALJ40X125-75 is discontinued. The direct replacement is the MBLJ40X125-75, which matches the 40mm bore, 125mm stroke, 75mm adjust code, G1/4 port and FA/LB mounting. The MBLJ upgrades the body to a riveted rolling-packed design.
The -75 adjust code means you can trim up to 75mm at the rear, creating a usable stroke window of 50-125mm. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ40X125-75 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.
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