This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X300-50 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X300-50 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 MALJ40X300-50
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-50 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 250 to 300 mm. This model is discontinued — the drop-in replacement is the MBLJ40X300-50.
- BoreØ40 mm
- Stroke300 mm
- Adjust window250–300 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X300-50
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-50
The AirTAC MALJ40X300-50 is a discontinued double-acting mini cylinder with a 40mm bore and 300mm stroke. The rear screw stopper trims up to 50mm, giving a usable end-position window of 250-300mm. It delivers 628N push and 528N pull at 0.5MPa. The exact drop-in replacement is the MBLJ40X300-50, matching the bore, stroke, force, G1/4 port and mounting.
This SKU lacks a magnet (-S) and cannot take a position sensor. The adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. The fixed rubber bumper softens impact. Upgrading to the MBLJ40X300-50 changes the threaded covers to a riveted rolling-packed body. If you previously used CS1-M/DS1-M switches on an -S variant, the MBLJ uses CMSG/DMSG/EMSG sensors.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-50 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-50 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X300-50 |
| Bore size | Ø40 mm |
| Stroke | 300 mm |
| Adjustable window | 250 – 300 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 MBLJ40X300-50 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 MBLJ40X300-50 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-50
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×300 | Nominal stroke length in mm. |
| -50 | Adjustable amount: trim the end to a 250–300 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 MALJ40X300-50 Is Used
PCB Router Z-Axis
Dials the 250-300mm descent window on a printed circuit board routing spindle, using the 880N push at 0.7MPa to plunge the tool without bottoming out the mechanics.
Aluminum Extrusion Press
Trims the 300mm reach to eject 40mm profile stock from a heated die, relying on the fixed rubber bumper to absorb the 628N impact at 0.5MPa.
Carton Flap Folder
Adjusts the rear stop by up to 50mm to fold varying corrugated box heights on a packaging line, ensuring precise depth without swapping hardware.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-50 with MBLJ40X300-50
To replace this MALJ40X300-50 with the MBLJ40X300-50, confirm the 40mm bore, 300mm stroke, 50mm adjust code, G1/4 PT port, and FA/LB mounting (no back cover or SDB allowed). This SKU has no -S magnet, so it cannot accept a sensor. Stepping down, the 32mm bore yields 402N push at 0.5MPa; stepping up is not possible as 40mm is the largest MALJ bore. At 300mm stroke, minimize side-load to prevent rod bending, and use an external lock for held loads.
Upgrade checklist
- ✓ Order the MBLJ40X300-50 (same bore/stroke/adjust)
- ✓ Same 250–300 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 MBLJ40X300-50 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-50 FAQ
Yes, the MALJ40X300-50 is discontinued. The exact drop-in replacement is the MBLJ40X300-50, which matches the 40mm bore, 300mm stroke, 50mm adjust code, G1/4 port, and mounting. The MBLJ upgrades the threaded covers to a riveted rolling-packed body.
The usable stroke window is 250-300mm, set by the 50mm rear adjuster. Force figures are 628N push and 528N pull at 0.5MPa, 880N push at 0.7MPa, and a maximum of 128kgf at 1.0MPa. The adjuster is a travel stop, not a lock, and this no-magnet SKU cannot take a sensor.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Drop-in Upgrade
The MBLJ40X300-50 replaces this model 1:1.
Fast Dispatch
MBLJ replacements usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Recommended AirTAC MBLJ Replacements
Request a Quote (Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-50 → MBLJ40X300-50)
Tell us the quantity and destination — we quote the drop-in MBLJ40X300-50 replacement with price, stock and lead time, usually within 7-8 hours.