This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X125-50 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X125-50 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 MALJ40X125-50
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-50 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 75 to 125 mm. This model is discontinued — the drop-in replacement is the MBLJ40X125-50.
- BoreØ40 mm
- Stroke125 mm
- Adjust window75–125 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X125-50
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-50
The AirTAC MALJ40X125-50 is a discontinued double-acting single-rod cylinder with a 40 mm bore and 125 mm stroke. It features a fixed rubber bumper and a rear screw stopper that lets you trim the end position by up to 50 mm, giving a usable stroke window of 75-125 mm. The 40 mm bore delivers 628 N push and 528 N pull at 0.5 MPa. This exact SKU has no magnet and cannot take a position sensor.
The direct drop-in replacement is the MBLJ40X125-50, sharing the same bore, stroke, adjust code, G1/4 port, and 128 kgf max force. The MALJ uses threaded covers and the adjuster functions purely as a travel stop, not a lock, meaning it will not hold a load without live air. Upgrading to the MBLJ brings a riveted rolling-packed body, though you lose the ability to retrofit older CS1-M sensors.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-50 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-50 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X125-50 |
| Bore size | Ø40 mm |
| Stroke | 125 mm |
| Adjustable window | 75 – 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 MBLJ40X125-50 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 MBLJ40X125-50 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-50
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×125 | Nominal stroke length in mm. |
| -50 | Adjustable amount: trim the end to a 75–125 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 MALJ40X125-50 Is Used
Thermoform Plug Assist
Dials the exact 75-125 mm penetration depth for a plastic sheet forming press, using the 628 N push force to mold packaging without swapping cylinders.
Pallet Wrap Press
Adjusts the end position to consistently compact varying cardboard thicknesses in a case erector, relying on the fixed rubber bumper to absorb the 880 N @0.7 MPa impact.
Bearing Press Fit
Sets a precise bottoming window for pressing bearings into housings on an assembly line, where the 528 N pull force retracts the rod for the next cycle.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-50 with MBLJ40X125-50
To replace the MALJ40X125-50, order the drop-in MBLJ40X125-50. Confirm your 40 mm bore, 125 mm stroke, 50 mm adjust code, G1/4 port, PT thread, and FA/LB mounting (this series uses no back cover or SDB). Because this specific SKU lacks the -S magnet, it cannot accept a position sensor, and the MBLJ upgrade will require the newer CMSG/DMSG/EMSG switch family if you ever add one. The rear adjuster is a travel stop, not a lock; use an external lock for held loads.
For sizing, step down to the 32 mm bore (402 N push @0.5 MPa) if your force needs are lower, or step up to a larger standard profile if you need more than 128 kgf. The 125 mm stroke is well within the 500 mm maximum for this bore, avoiding rod-bending side-load issues.
Upgrade checklist
- ✓ Order the MBLJ40X125-50 (same bore/stroke/adjust)
- ✓ Same 75–125 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 MBLJ40X125-50 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-50 FAQ
Yes, the MALJ40X125-50 is discontinued. The exact drop-in replacement is the MBLJ40X125-50, which matches the 40 mm bore, 125 mm stroke, 50 mm adjust code, G1/4 port, and FA/LB mounting. 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 maximum of 128 kgf at 1.0 MPa. The 50 mm adjust code allows you to trim the 125 mm stroke, creating a usable window of 75-125 mm. Note that the adjuster is a travel stop, not a lock.
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The MBLJ40X125-50 replaces this model 1:1.
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