This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X125-40 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X125-40 in place of this model. 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 MALJ40X125-40
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-40 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 85 to 125 mm. This model is discontinued — the drop-in replacement is the MBLJ40X125-40.
- BoreØ40 mm
- Stroke125 mm
- Adjust window85–125 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X125-40
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-40
The AirTAC MALJ40X125-40 is a discontinued double-acting mini cylinder with a 40 mm bore and 125 mm stroke. It provides a usable extension window of 85-125 mm via its 40 mm rear adjuster. As the largest MALJ bore, it delivers 628 N push and 528 N pull at 0.5 MPa. The exact drop-in replacement is the MBLJ40X125-40, matching the G1/4 port, M12x1.25 rod thread and force ratings.
This SKU lacks a magnet (-S), so it cannot accept a position sensor. The rear screw sets the end position but is a travel stop, not a lock; it will not hold a load without live air. Upgrading to the MBLJ moves from threaded covers to a riveted rolling-packed body. The MALJ uses a fixed rubber bumper, meaning the adjustable stroke must not be confused with an adjustable air cushion.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-40 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-40 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X125-40 |
| Bore size | Ø40 mm |
| Stroke | 125 mm |
| Adjustable window | 85 – 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 MBLJ40X125-40 carries the same ratings.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Single-rod force, same as a standard MAL of this bore. The MBLJ40X125-40 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-40
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×125 | Nominal stroke length in mm. |
| -40 | Adjustable amount: trim the end to a 85–125 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 MALJ40X125-40 Is Used
Injection Mold Ejection
Dial the 85-125 mm reach to strike an ejector pin at the exact mold break point without shimming, using 628 N of push force to free the part.
PCB Router Depth Stop
Set the rear stop to limit the 125 mm stroke, preventing the 16 mm rod from driving a routing spindle too deep into the base material.
Pallet Dispenser Gate
Adjust the end position to release one pallet at a time from a stack, relying on the 528 N pull force to retract the heavy gate.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-40 with MBLJ40X125-40
To replace the MALJ40X125-40, order the MBLJ40X125-40. Confirm the 40 mm bore, 125 mm stroke, 40 mm adjust code, G1/4 port, PT thread, and FA or LB mounting (no back cover or SDB is used). Because this SKU has no -S magnet, you cannot fit a sensor; if you need sensing on the new unit, specify an MBLJ-S to use CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M. The rear adjuster is a stop, not a lock.
For sizing, the 40 mm bore is the largest in this series, so the only neighbour is the 32 mm bore, which drops force to 402 N push at 0.5 MPa. If you need more than 628 N, you must step outside the MALJ/MBLJ mini range. At 125 mm stroke, check rod side-load: the 16 mm carbon-steel rod handles normal alignment but avoid lateral bending forces.
Upgrade checklist
- ✓ Order the MBLJ40X125-40 (same bore/stroke/adjust)
- ✓ Same 85–125 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 MBLJ40X125-40 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-40 FAQ
Yes, the MALJ40X125-40 is discontinued. The exact drop-in replacement is the MBLJ40X125-40, which matches the 40 mm bore, 125 mm stroke, 40 mm adjust code, and G1/4 port. The MBLJ upgrades the construction from threaded covers to a riveted rolling-packed body.
The 40 mm bore delivers 628 N push and 528 N pull at 0.5 MPa, 880 N push at 0.7 MPa, and a maximum of 128 kgf at 1.0 MPa. The 40 mm rear adjuster creates a usable stroke window of 85-125 mm. The adjuster is a travel stop, not a lock, and cannot hold a load without air pressure.
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The MBLJ40X125-40 replaces this model 1:1.
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