This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X300-40 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X300-40 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 MALJ40X300-40
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40 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 260 to 300 mm. This model is discontinued — the drop-in replacement is the MBLJ40X300-40.
- BoreØ40 mm
- Stroke300 mm
- Adjust window260–300 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X300-40
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40
The AirTAC MALJ40X300-40 is a discontinued double-acting single-rod mini cylinder. It trims up to 40mm at the rear, giving an adjustable 260-300mm usable window. Bore 40mm yields 628N push and 528N pull at 0.5MPa. The drop-in replacement is the MBLJ40X300-40.
This SKU lacks a magnet, so it cannot take a position sensor. The adjuster is a travel stop, not a lock. It uses a fixed rubber bumper and threaded covers. The MBLJ upgrade uses a riveted body and CMSG/DMSG/EMSG sensors.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X300-40 |
| Bore size | Ø40 mm |
| Stroke | 300 mm |
| Adjustable window | 260 – 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 MBLJ40X300-40 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 MBLJ40X300-40 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×300 | Nominal stroke length in mm. |
| -40 | Adjustable amount: trim the end to a 260–300 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 MALJ40X300-40 Is Used
Injection Mold Ejection
Dial the 260-300mm reach to eject parts precisely from deep molds without adding external stops, using the 628N push force.
Carton Flap Folding
Fine-tune the folding arm end position on packaging lines to clear varying carton heights, relying on the fixed rubber bumper.
Pallet Push-Off
Set the exact push depth for layer separation in palletizing, using the 40mm rear adjustment to match different pallet widths.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40 with MBLJ40X300-40
Replace this with the MBLJ40X300-40. Confirm the G1/4 port, M12x1.25 rod thread, and FA/LB mounting (no back cover or SDB). The adjuster sets end position but will not hold load without air. For a 300mm stroke, prevent rod bending by managing side loads. Step down to bore 32 (402N push) or up to a larger ISO cylinder if you need more force.
Upgrade checklist
- ✓ Order the MBLJ40X300-40 (same bore/stroke/adjust)
- ✓ Same 260–300 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 MBLJ40X300-40 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40 FAQ
Yes, it is discontinued. The exact drop-in replacement is the MBLJ40X300-40, which matches the 40mm bore, 300mm stroke, 40mm adjust, G1/4 port, and mounting. The MBLJ upgrades to a riveted body and CMSG/DMSG/EMSG sensors.
It delivers 628N push and 528N pull at 0.5MPa, 880N push at 0.7MPa, and 128kgf max at 1.0MPa. The 40mm adjuster creates a 260-300mm usable window. It is a travel stop, not a lock. This no-magnet SKU cannot take a sensor.
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The MBLJ40X300-40 replaces this model 1:1.
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MBLJ replacements usually ship in 3-4 days.
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