This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X125-40-S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X125-40-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 MALJ40X125-40-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-40-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 40 mm, giving a usable end-position window from 85 to 125 mm. This model is discontinued — the drop-in replacement is the MBLJ40X125-40-S.
- BoreØ40 mm
- Stroke125 mm
- Adjust window85–125 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X125-40-S
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-40-S
The AirTAC MALJ40X125-40-S is a discontinued 40mm bore adjustable-stroke mini cylinder. It is double-acting with a single rod and a rear travel stopper that trims up to 40mm, giving a usable end-position window of 85-125mm. At 0.5MPa it delivers 628N push and 528N pull force (880N push at 0.7MPa). The exact drop-in replacement is the MBLJ40X125-40-S, matching the bore, stroke, adjust code, G1/4 port, and mounting.
This -S variant has a magnet for legacy CS1-M or DS1-M reed switches; the MBLJ replacement upgrades to CMSG, DMSG, or EMSG sensors. The MALJ uses threaded covers and a fixed rubber bumper, while the MBLJ features a riveted rolling-packed body. The rear adjuster sets the end position but is a travel stop, not a lock; it will not hold a load without live air pressure. There is no back cover or SDB option, so mounting is limited to Basic, FA, or LB.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-40-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-40-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X125-40-S |
| Bore size | Ø40 mm |
| Stroke | 125 mm |
| Adjustable window | 85 – 125 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 MBLJ40X125-40-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 MBLJ40X125-40-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-40-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×125 | Nominal stroke length in mm. |
| -40 | Adjustable amount: trim the end to a 85–125 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 MALJ40X125-40-S Is Used
Press Fit Sub-Assembly
Dial in the 85-125mm reach to press a bearing into an aluminum housing without repositioning the cylinder body, using the 628N push force at 0.5MPa.
Packaging Flap Folding
Fine-tune the rear stopper to fold corrugated carton flaps at varying box heights, preventing overtravel and crushing the cardboard.
Pneumatic Clamping Fixture
Adjust the end position to clamp cast iron motor housings securely, accommodating part tolerance variations without adding external mechanical stops.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-40-S with MBLJ40X125-40-S
To replace the MALJ40X125-40-S, order the exact drop-in MBLJ40X125-40-S. Confirm the 40mm bore, 125mm stroke, 40mm adjust code, G1/4 port, PT thread, and LB or FA mounting. The -S magnet means you must upgrade your sensors from the old CS1-M/DS1-M family to the MBLJ's CMSG/DMSG/EMSG switches. Remember the rear adjuster is a stop, not a lock; use an external lock for load holding.
For sizing flexibility, you can step down to the 32mm bore (402N push at 0.5MPa) if your force needs are lower, or step up to this 40mm bore (628N push) if you are currently using a 32mm cylinder and need more force. Since the 125mm stroke is under the 500mm max, rod bending is not a major concern, but avoid side loads on long extensions.
Upgrade checklist
- ✓ Order the MBLJ40X125-40-S (same bore/stroke/adjust)
- ✓ Same 85–125 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 MBLJ40X125-40-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-40-S FAQ
Yes, the MALJ40X125-40-S is discontinued. The exact drop-in replacement is the MBLJ40X125-40-S, which matches the 40mm bore, 125mm stroke, 40mm adjust code, G1/4 port, and mounting. The MBLJ upgrades the body to a riveted rolling-packed design and changes the sensor family from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The 40mm adjust code lets you trim the 125mm stroke, creating a usable end-position window of 85-125mm. The 40mm bore generates 628N push and 528N pull at 0.5MPa, 880N push at 0.7MPa, and a maximum of 128kgf at 1.0MPa. The rear screw is a travel stop, not a lock.
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The MBLJ40X125-40-S replaces this model 1:1.
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