This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X50-50 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X50-50 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 MALJ40X50-50
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-50 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 50 mm, giving a usable end-position window from 0 to 50 mm. This model is discontinued — the drop-in replacement is the MBLJ40X50-50.
- BoreØ40 mm
- Stroke50 mm
- Adjust window0–50 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X50-50
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-50
The AirTAC MALJ40X50-50 is a discontinued double-acting, single-rod mini cylinder with a 40mm bore and a 50mm stroke. It features a rear adjustable stopper that allows you to trim up to 50mm, providing a usable end-position window of 0-50mm. This bore delivers substantial force, pushing 628N and pulling 528N at 0.5MPa. The exact drop-in replacement is the MBLJ40X50-50, matching the bore, stroke, port, and mounting.
This SKU has no magnet (-S omitted), so it cannot accept a position sensor. The rear adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. Two upgrade facts define the MBLJ40X50-50 successor: it replaces the MALJ's threaded covers with a riveted rolling-packed body, and if you ever need sensors, the MBLJ uses modern CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M family. Impact is absorbed by a fixed rubber bumper, as there is no adjustable air cushion.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-50 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-50 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X50-50 |
| Bore size | Ø40 mm |
| Stroke | 50 mm |
| Adjustable window | 0 – 50 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 MBLJ40X50-50 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 MBLJ40X50-50 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-50
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×50 | Nominal stroke length in mm. |
| -50 | Adjustable amount: trim the end to a 0–50 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 MALJ40X50-50 Is Used
Injection Mold Ejector
Dial the 0-50mm stroke window to time the exact ejection of plastic parts without repositioning the mold, using the 628N push force at 0.5MPa to clear the tooling.
Bending Press Depth Stop
Set the rear stopper to control the bottom dead center of a small metal bending fixture, ensuring consistent bend angles by preventing the 40mm rod from over-traveling.
Pneumatic Rivet Clinch
Fine-tune the clinch height on an assembly line by trimming the end position, leveraging the 880N push force at 0.7MPa to set rivets precisely without bottoming out.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-50 with MBLJ40X50-50
To replace the MALJ40X50-50, order the exact drop-in MBLJ40X50-50. Confirm the 40mm bore, 50mm stroke, 50mm adjust code, G1/4 port, PT thread, and FA/LB mounting (there is no back cover or SDB option). Because this is the largest MALJ bore available, the next size down is the 32mm bore (delivering 402N push at 0.5MPa) if you need less force. The rear adjuster is a travel stop, not a lock; use an external lock for held loads.
Upgrade checklist
- ✓ Order the MBLJ40X50-50 (same bore/stroke/adjust)
- ✓ Same 0–50 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 MBLJ40X50-50 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-50 FAQ
Yes, the MALJ40X50-50 is discontinued. The exact drop-in replacement is the MBLJ40X50-50, which matches the 40mm bore, 50mm stroke, 50mm adjust code, G1/4 port, and FA/LB mounting. The MBLJ upgrades the threaded covers to a riveted rolling-packed body.
The 50mm adjust code lets you trim the 50mm stroke, giving a usable window of 0-50mm. The full force set is: 628N push and 528N pull at 0.5MPa, 880N push at 0.7MPa, and a maximum of 128kgf at 1.0MPa. This SKU lacks a magnet, so it cannot take a position sensor.
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The MBLJ40X50-50 replaces this model 1:1.
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MBLJ replacements usually ship in 3-4 days.
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