This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X500-20 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X500-20 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 MALJ40X500-20
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X500-20 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 480 to 500 mm. This model is discontinued — the drop-in replacement is the MBLJ40X500-20.
- BoreØ40 mm
- Stroke500 mm
- Adjust window480–500 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X500-20
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X500-20
The AirTAC MALJ40X500-20 is a discontinued double-acting single-rod cylinder with a rear adjustable stop. It trims up to 20 mm at the rear, yielding a usable 480-500 mm window. The 40 mm bore delivers 628 N push and 528 N pull at 0.5 MPa. The exact drop-in replacement is the MBLJ40X500-20.
This SKU lacks a magnet and cannot take a position sensor. The adjuster sets the end position but does not hold load without live air. The fixed rubber bumper softens impact. Upgrading to the MBLJ40X500-20 moves you from threaded covers to a riveted rolling-packed body.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X500-20 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X500-20 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X500-20 |
| Bore size | Ø40 mm |
| Stroke | 500 mm |
| Adjustable window | 480 – 500 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 MBLJ40X500-20 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 MBLJ40X500-20 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X500-20
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×500 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a 480–500 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 MALJ40X500-20 Is Used
Long-throw carton pusher
Dial in the 480-500 mm end position on packaging conveyor transitions to transfer cartons precisely without adding external mechanical stops.
CNC door actuation
Fine-tune the full 500 mm reach for machine tool safety doors, using the 628 N push force to slide heavy vertical guards reliably.
Palletizer depth stop
Set exact retraction depth on a 500 mm palletizing stroke, using the rear adjuster to compensate for fixture wear without rewriting PLC logic.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X500-20 with MBLJ40X500-20
Replace the MALJ40X500-20 with the exact drop-in MBLJ40X500-20. Confirm the 40 mm bore, 500 mm stroke, 20 mm adjust code, G1/4 port, and PT thread. Mounting is FA or LB only; there is no back-cover or SDB option. Because this SKU lacks an -S magnet, it cannot take a sensor. If you need a sensor, the MBLJ upgrade uses CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M.
To size either way: step down to the 32 mm bore (402 N push at 0.5 MPa) or step up to this 40 mm bore (628 N push at 0.5 MPa) if you need more force. At 500 mm stroke, prevent rod bending by ensuring rigid guide rails to handle side loads.
Upgrade checklist
- ✓ Order the MBLJ40X500-20 (same bore/stroke/adjust)
- ✓ Same 480–500 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 MBLJ40X500-20 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X500-20 FAQ
Yes, the MALJ40X500-20 is discontinued. The exact drop-in replacement is the MBLJ40X500-20. It matches the 40 mm bore, 500 mm stroke, 20 mm adjust code, G1/4 port, and mounting. The MBLJ upgrades the body from threaded covers to a riveted rolling-packed design.
The 20 mm adjuster creates a usable stroke window of 480-500 mm. The full force set: push 628 N and pull 528 N at 0.5 MPa, push 880 N at 0.7 MPa, and max 128 kgf at 1.0 MPa. The adjuster is a travel stop, not a lock.
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The MBLJ40X500-20 replaces this model 1:1.
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MBLJ replacements usually ship in 3-4 days.
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