This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X25-20-S-LB — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X25-20-S-LB 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-S-LB
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-20-S-LB 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-S-LB.
- BoreØ40 mm
- Stroke25 mm
- Adjust window5–25 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X25-20-S-LB
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-20-S-LB
The AirTAC MALJ40X25-20-S-LB is a discontinued double-acting, adjustable-stroke mini cylinder. It features a 40mm bore, a 25mm stroke, and a rear stopper that trims up to 20mm, yielding a usable 5-25mm end-position window. It delivers 628N push and 528N pull at 0.5 MPa. The exact drop-in replacement is the MBLJ40X25-20-S-LB.
This LB foot-mounted unit uses a G1/4 port and a fixed rubber bumper. The rear adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. The MALJ uses threaded covers and a CS1-M/DS1-M magnet sensor, whereas the MBLJ upgrade features a riveted rolling-packed body and CMSG/DMSG/EMSG sensors.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-20-S-LB Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-20-S-LB |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X25-20-S-LB |
| 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-S-LB 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-S-LB matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-20-S-LB
| 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-S-LB Is Used
PCB Router Z-Axis Stop
Dial the 5-25mm window on a 40mm bore to set precise router depth. The 628N push force handles heavy spindle plunges without external stops.
Aluminum Extrusion Press
Use the LB foot mount to anchor a 528N pull force. The rear stopper fine-tunes the upset length of soft metal profiles in a single run.
Pallet Stripper Head
Trim the 25mm stroke down to 5mm to strip stuck parts from pallets. The fixed rubber bumper absorbs the 880N impact at 0.7 MPa safely.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-20-S-LB with MBLJ40X25-20-S-LB
To replace this MALJ40X25-20-S-LB, install the MBLJ40X25-20-S-LB which matches the 40mm bore, 25mm stroke, 20mm adjust code, LB foot mount, PT G1/4 port, and -S magnet. Remember the sensor family changes from CS1-M/DS1-M to CMSG/DMSG/EMSG. The adjuster is a stop, not a lock; add an external lock to hold loads.
For sizing flexibility, stepping down to the 32mm bore yields 402N push at 0.5 MPa, while stepping up is not available as 40mm is the largest MALJ bore. No back cover or SDB is used; mounting is FA or LB only.
Upgrade checklist
- ✓ Order the MBLJ40X25-20-S-LB (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-S-LB instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-20-S-LB FAQ
Yes, it is discontinued. The exact drop-in replacement is the MBLJ40X25-20-S-LB, matching the 40mm bore, 25mm stroke, 20mm adjust, LB mount, and G1/4 port. You must upgrade your sensors from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The usable stroke window is 5-25mm. The double-acting force figures 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 rear adjuster is a travel stop, not a lock.
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Drop-in Upgrade
The MBLJ40X25-20-S-LB replaces this model 1:1.
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MBLJ replacements usually ship in 3-4 days.
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