This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X20-20-S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X20-20-S 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 MALJ40X20-20-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X20-20-S 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 0 to 20 mm. This model is discontinued — the drop-in replacement is the MBLJ40X20-20-S.
- BoreØ40 mm
- Stroke20 mm
- Adjust window0–20 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X20-20-S
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X20-20-S
The AirTAC MALJ40X20-20-S is a discontinued double-acting, single-rod mini cylinder with a 40mm bore and 20mm stroke. The drop-in replacement is the MBLJ40X20-20-S, matching the force, G1/4 port, and FA/LB mounting. This SKU provides a usable adjustable window of 0-20mm via a rear travel stopper. It delivers 628N push and 528N pull force at 0.5MPa.
The rear adjuster sets the end position but does not hold the load without live air; use an external lock for holding. The -S magnet on this MALJ works with CS1-M/DS1-M switches, while the MBLJ replacement upgrades to CMSG/DMSG/EMSG sensors. The MALJ uses threaded covers, whereas the MBLJ features a riveted rolling-packed body. Both use a fixed rubber bumper, not an adjustable air cushion.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X20-20-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X20-20-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X20-20-S |
| Bore size | Ø40 mm |
| Stroke | 20 mm |
| Adjustable window | 0 – 20 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 MBLJ40X20-20-S 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 MBLJ40X20-20-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X20-20-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×20 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a 0–20 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 MALJ40X20-20-S Is Used
PCB Router Z-Axis Stop
Dial in a precise 0-20mm depth window on a PCB depaneling router, using the 628N push force to seat the cutting bit without bottoming out the spindle.
Pneumatic Press Tonnage
Fine-tune the crimp height of a wire terminal press by trimming the end position up to 20mm, ensuring consistent contact pressure with 528N pull force.
Packaging Flap Folder
Adjust the stroke on a carton erector to fold varying corrugated flap thicknesses, relying on the fixed rubber bumper to soften the end impact.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X20-20-S with MBLJ40X20-20-S
To replace the MALJ40X20-20-S with the MBLJ40X20-20-S, confirm the 40mm bore, 20mm stroke, 20mm adjust code, G1/4 port, and M12x1.25 rod-end thread. Mounting is FA or LB only; there is no back-cover or SDB option. The -S magnet means a sensor family change from CS1-M/DS1-M to CMSG/DMSG/EMSG. The adjuster is a travel stop, not a lock.
For sizing, step down to the 32mm bore (402N push @0.5MPa) for lighter loads, or step up to a larger standard bore if you need more force. The 40mm bore provides 628N push @0.5MPa. For any stroke over 300mm, add a side-load guide to prevent rod bending.
Upgrade checklist
- ✓ Order the MBLJ40X20-20-S (same bore/stroke/adjust)
- ✓ Same 0–20 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 MBLJ40X20-20-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X20-20-S FAQ
Yes, the MALJ40X20-20-S is discontinued. The exact drop-in replacement is the MBLJ40X20-20-S, which matches the 40mm bore, 20mm stroke, 20mm adjust code, G1/4 port, and FA/LB mounting. The MBLJ upgrades the body to a riveted rolling-packed design and the -S magnet to CMSG/DMSG/EMSG sensors.
The -20 adjust code lets you trim the 20mm stroke at the rear, giving a usable window of 0-20mm. The adjuster is a travel stop, not a lock. The full force set is: 628N push @0.5MPa, 528N pull @0.5MPa, 880N push @0.7MPa, and a maximum of 128kgf @1.0MPa.
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Drop-in Upgrade
The MBLJ40X20-20-S replaces this model 1:1.
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MBLJ replacements usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
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