This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X300-30 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X300-30 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 MALJ40X300-30
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-30 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 30 mm, giving a usable end-position window from 270 to 300 mm. This model is discontinued — the drop-in replacement is the MBLJ40X300-30.
- BoreØ40 mm
- Stroke300 mm
- Adjust window270–300 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X300-30
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-30
The AirTAC MALJ40X300-30 is a discontinued 40mm bore, double-acting single-rod mini cylinder with a 300mm stroke and a 30mm rear adjustable travel stop. It gives a usable end-position window of 270-300mm. It delivers 628N push and 528N pull at 0.5MPa, with a fixed rubber bumper absorbing end impact. The exact drop-in replacement is the MBLJ40X300-30, matching bore, stroke, adjust code, G1/4 port, and mounting.
This SKU lacks a magnet (-S) and cannot take a position sensor. The adjuster sets reach but is a travel stop, not a lock, so it will not hold a load without live air. The original MALJ uses threaded covers and older CS1-M/DS1-M switches; the MBLJ upgrade features a riveted rolling-packed body and CMSG/DMSG/EMSG sensors. It has no back cover or SDB, mounting via FA or LB only.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-30 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-30 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X300-30 |
| Bore size | Ø40 mm |
| Stroke | 300 mm |
| Adjustable window | 270 – 300 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 MBLJ40X300-30 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 MBLJ40X300-30 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-30
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×300 | Nominal stroke length in mm. |
| -30 | Adjustable amount: trim the end to a 270–300 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 MALJ40X300-30 Is Used
Long-reach packaging pusher
Dial in the 270-300mm extension on a carton sealing line to push varying box depths without swapping the cylinder, using the 628N @0.5MPa force to move loads.
Palletizer end-stop
Set the rear stop to fine-tune the 300mm end position for a palletizing head, ensuring precise vertical placement while relying on the fixed rubber bumper to soften impact.
Wood routing depth gate
Adjust the stroke window down to 270mm to act as a depth gate for a wood routing fixture, stopping the rod before full extension to prevent tool over-travel.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-30 with MBLJ40X300-30
To replace this MALJ40X300-30, order the drop-in MBLJ40X300-30. Confirm the 40mm bore, 300mm stroke, 30mm adjust code, G1/4 port, PT thread, and FA/LB mounting (no back cover or SDB). Because this SKU has no -S magnet, it cannot accept a sensor; if you need position feedback, step up to an MBLJ40X300-30S and use the newer CMSG/DMSG/EMSG switches instead of the legacy CS1-M/DS1-M. Remember the rear adjuster is a travel stop, not a lock. If sizing a new build, the next size down is the 32mm bore (G1/8 port, 402N push @0.5MPa) and the 40mm is the largest available MALJ bore. At 300mm stroke, minimize side-load to prevent rod bending.
Upgrade checklist
- ✓ Order the MBLJ40X300-30 (same bore/stroke/adjust)
- ✓ Same 270–300 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 MBLJ40X300-30 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-30 FAQ
Yes, the MALJ40X300-30 is discontinued. The exact drop-in replacement is the MBLJ40X300-30, matching the 40mm bore, 300mm stroke, 30mm adjust code, G1/4 port, and force. The MBLJ upgrades the body to a riveted rolling-packed design; if you need sensors, use the -S version with CMSG/DMSG/EMSG switches.
The usable stroke window is 270-300mm (300mm stroke minus the 30mm rear adjuster). Force ratings at 0.5MPa are 628N push and 528N pull; at 0.7MPa it pushes 880N. The maximum force is 128kgf at 1.0MPa. The adjuster is a travel stop, not a lock.
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The MBLJ40X300-30 replaces this model 1:1.
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