This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X250-75-S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X250-75-S 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 MALJ40X250-75-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-75-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 75 mm, giving a usable end-position window from 175 to 250 mm. This model is discontinued — the drop-in replacement is the MBLJ40X250-75-S.
- BoreØ40 mm
- Stroke250 mm
- Adjust window175–250 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X250-75-S
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-75-S
The AirTAC MALJ40X250-75-S is a discontinued double-acting mini cylinder with a rear travel stopper. The 75 mm adjuster creates a usable stroke window of 175-250 mm. The 40 mm bore delivers 628 N push and 528 N pull at 0.5 MPa. The exact drop-in replacement is the MBLJ40X250-75-S, matching the G1/4 port and M12x1.25 rod.
This -S SKU uses a CS1-M or DS1-M magnet sensor, whereas the MBLJ upgrade takes CMSG, DMSG or EMSG switches. The original MALJ has threaded covers; the MBLJ uses a riveted rolling-packed body. The rear adjuster sets the end position but does not hold a load without live air. End impact is softened only by a fixed rubber bumper, as there is no air cushion.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-75-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-75-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X250-75-S |
| Bore size | Ø40 mm |
| Stroke | 250 mm |
| Adjustable window | 175 – 250 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 MBLJ40X250-75-S 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 MBLJ40X250-75-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-75-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×250 | Nominal stroke length in mm. |
| -75 | Adjustable amount: trim the end to a 175–250 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 MALJ40X250-75-S Is Used
PCB Router Z-Axis
Dials the 175-250 mm cutting depth on a PCB depaneling router. The 628 N push force handles the Z-axis plunge while the stopper dials the exact board depth.
Aluminum Extrusion Press
Adjusts the end position for clamping varying lengths of aluminum extrusion. The fixed rubber bumper absorbs the 880 N extended impact without requiring external shock pads.
Carton Flap Folder
Tunes the rear stroke window to fold different carton heights on a packaging line. The 75 mm trim window allows quick format changes without swapping hardware.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-75-S with MBLJ40X250-75-S
To replace the MALJ40X250-75-S, order the MBLJ40X250-75-S. Confirm the 40 mm bore, 250 mm stroke, 75 mm adjust code, PT G1/4 port, and FA or LB mounting. There is no back cover or SDB option. The -S magnet changes the sensor family from CS1-M/DS1-M to CMSG/DMSG/EMSG.
If you need to size either way, stepping down to the 32 mm bore drops the 0.5 MPa push force to 402 N. Stepping up is not possible as 40 mm is the largest MALJ bore. At 250 mm, the 16 mm rod is exposed to side-load risks; keep the load guided to prevent rod bending. The adjuster is a travel stop, not a lock, so fit an external lock for held loads.
Upgrade checklist
- ✓ Order the MBLJ40X250-75-S (same bore/stroke/adjust)
- ✓ Same 175–250 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 MBLJ40X250-75-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-75-S FAQ
Yes, the MALJ40X250-75-S is discontinued. The exact drop-in replacement is the MBLJ40X250-75-S, which matches the 40 mm bore, 250 mm stroke, 75 mm adjust code, and G1/4 port. You will need to upgrade your sensors from CS1-M/DS1-M to CMSG/DMSG/EMSG.
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 maximum of 128 kgf at 1.0 MPa. The 75 mm adjuster is a travel stop that lets you trim the usable stroke window down to 175 mm. It does not lock the load without air pressure.
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The MBLJ40X250-75-S replaces this model 1:1.
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