This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X25-20 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X25-20 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 MALJ40X25-20
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-20 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 5 to 25 mm. This model is discontinued — the drop-in replacement is the MBLJ40X25-20.
- BoreØ40 mm
- Stroke25 mm
- Adjust window5–25 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X25-20
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-20
The AirTAC MALJ40X25-20 is a discontinued double-acting mini cylinder with a rear travel stop. It gives a usable stroke window of 5-25 mm. The 40 mm bore delivers 628 N push and 528 N pull at 0.5 MPa. It uses a fixed rubber bumper, not an air cushion. The exact drop-in replacement is the MBLJ40X25-20.
This SKU lacks a magnet, so it cannot take a position sensor. The MALJ uses threaded covers and a PT G1/4 port. The MBLJ40X25-20 upgrade retains the bore, stroke, and adjust code but uses a riveted rolling-packed body. The rear adjuster sets the end position but does not hold load without live air.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-20 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-20 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X25-20 |
| Bore size | Ø40 mm |
| Stroke | 25 mm |
| Adjustable window | 5 – 25 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 MBLJ40X25-20 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 MBLJ40X25-20 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-20
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×25 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a 5–25 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 MALJ40X25-20 Is Used
Press-fit bushings
Dial the 5-25 mm end position to seat small bushings perfectly without over-travel, using the full 628 N push force at 0.5 MPa.
Bending thin sheet metal
Fine-tune the rear stop to set a precise 15 mm flange bend depth on a small brake, leveraging the 40 mm bore's 880 N push at 0.7 MPa.
Riveting aluminum frames
Adjust the stroke window to squeeze rivets on varying frame thicknesses without repositioning external physical stops.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-20 with MBLJ40X25-20
Replace the MALJ40X25-20 with the MBLJ40X25-20. Confirm the 40 mm bore, 25 mm stroke, 20 mm adjust code, PT G1/4 port, and M12x1.25 rod thread. Mounting is Basic, FA, or LB only; there is no back-cover or SDB option. Because this SKU has no -S magnet, it cannot take a sensor. The MBLJ upgrade uses CMSG/DMSG/EMSG switches if you need sensing. The rear adjuster is a travel stop, not a lock; use an external lock for held loads.
Size both ways: stepping down to the 32 mm bore yields 402 N push at 0.5 MPa, while stepping up is not available as 40 mm is the largest MALJ bore. The 40 mm bore gives the highest force here, pushing 880 N at 0.7 MPa.
Upgrade checklist
- ✓ Order the MBLJ40X25-20 (same bore/stroke/adjust)
- ✓ Same 5–25 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 MBLJ40X25-20 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-20 FAQ
Yes, the MALJ40X25-20 is discontinued. The exact drop-in replacement is the MBLJ40X25-20, which matches the 40 mm bore, 25 mm stroke, 20 mm adjust code, G1/4 port, and force. The MBLJ upgrades the body to a riveted rolling-packed design.
The 40 mm bore provides 628 N push and 528 N pull at 0.5 MPa, 880 N push at 0.7 MPa, and a max of 128 kgf at 1.0 MPa. The -20 adjuster lets you trim the rear position for a 5-25 mm usable window. It acts as a travel stop, not a load lock.
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The MBLJ40X25-20 replaces this model 1:1.
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MBLJ replacements usually ship in 3-4 days.
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