This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X300-20 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X300-20 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 MALJ40X300-20
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-20 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 20 mm, giving a usable end-position window from 280 to 300 mm. This model is discontinued — the drop-in replacement is the MBLJ40X300-20.
- BoreØ40 mm
- Stroke300 mm
- Adjust window280–300 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X300-20
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-20
The AirTAC MALJ40X300-20 is a discontinued adjustable-stroke mini cylinder. It is double-acting with a 40mm bore and 300mm stroke. The rear screw lets you trim up to 20mm, yielding a usable 280-300mm end-position window. It delivers 628N push and 528N pull at 0.5 MPa. The drop-in replacement is the MBLJ40X300-20, matching bore, stroke, force, and G1/4 port.
This SKU lacks a magnet (-S), so it cannot take a position sensor. The adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. Upgrading to the MBLJ replaces the threaded covers with a riveted rolling-packed body, and if you later need sensing, the MBLJ uses CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-20 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-20 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X300-20 |
| Bore size | Ø40 mm |
| Stroke | 300 mm |
| Adjustable window | 280 – 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 MBLJ40X300-20 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 MBLJ40X300-20 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-20
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×300 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a 280–300 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 MALJ40X300-20 Is Used
Thermoforming Press Ejection
Dial the 280-300mm reach to eject formed plastic sheets from a press without repositioning the cylinder, using the 628N push force at 0.5 MPa.
Printed Circuit Board Conveyor Stop
Fine-tune the stopper depth on a PCB assembly line to accommodate different panel widths, ensuring the 528N pull retracts cleanly.
Woodworking Router Profiling
Adjust the end position by 20mm to set precise routing depth stops on a CNC router, preventing over-travel on long 300mm cuts.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-20 with MBLJ40X300-20
To replace the MALJ40X300-20, order the MBLJ40X300-20. Confirm the 40mm bore, 300mm stroke, 20mm adjust code, G1/4 port, M12x1.25 rod thread, and PT thread form. Mounting is FA or LB only (no back cover or SDB). The fixed rubber bumper softens impact; the adjustable stroke is not an adjustable cushion. Because this SKU has no -S magnet, it cannot accept a sensor. If you need to step down, the 32mm bore gives 402N push at 0.5 MPa; if you need more force, note that 40mm is the largest MALJ bore available, delivering 880N push at 0.7 MPa. At 300mm stroke, use guide rails to prevent rod bending from side loads.
Upgrade checklist
- ✓ Order the MBLJ40X300-20 (same bore/stroke/adjust)
- ✓ Same 280–300 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 MBLJ40X300-20 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-20 FAQ
Yes, the MALJ40X300-20 is discontinued. The exact drop-in replacement is the MBLJ40X300-20, which matches the 40mm bore, 300mm stroke, 20mm adjust code, G1/4 port, and force. The MBLJ upgrades the threaded covers to a riveted rolling-packed body.
The usable stroke window is 280-300mm (trimming up to 20mm at the rear). Force figures for the 40mm bore are: 628N push and 528N pull at 0.5 MPa, 880N push at 0.7 MPa, and a maximum of 128 kgf at 1.0 MPa. The adjuster is a travel stop, not a lock.
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The MBLJ40X300-20 replaces this model 1:1.
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MBLJ replacements usually ship in 3-4 days.
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