This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ40X125-40, with the same bore, stroke, output force, port and mounting, so it fits the same application. 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
The AirTAC MALJ40 Adjustable Mini Cylinder MALJ40X125-40 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 direct replacement is the MBLJ40X125-40.
- BoreØ40 mm
- Stroke125 mm
- Adjust window85–125 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X125-40
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-40
The AirTAC MALJ40X125-40 is a discontinued double-acting mini cylinder with a 40 mm bore and 125 mm stroke. It provides a usable extension window of 85-125 mm via its 40 mm rear adjuster. The direct replacement is the MBLJ40X125-40, matching the G1/4 port, M12x1.25 rod thread and force ratings.
This SKU lacks a magnet (-S), so it cannot accept a position sensor. The rear screw sets the end position but is a travel stop, not a lock; it will not hold a load without live air. Upgrading to the MBLJ moves from threaded covers to a riveted rolling-packed body. The MALJ uses a fixed rubber bumper, meaning the adjustable stroke must not be confused with an adjustable air cushion.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-40 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-40 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X125-40 |
| 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 carries the same ratings.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 kgf | |
MALJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative), lower than a single-rod MAL push of the same bore. The MBLJ40X125-40 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-40
| 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 Is Used
PCB Router Depth Stop
Set the rear stop to limit the 125 mm stroke, preventing the 16 mm rod from driving a routing spindle too deep into the base material.
Pallet Dispenser Gate
Adjust the end position to release one pallet at a time from a stack, relying on the 528 N pull force to retract the heavy gate.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-40 with MBLJ40X125-40
To replace the MALJ40X125-40, order the MBLJ40X125-40. Confirm the 40 mm bore, 125 mm stroke, 40 mm adjust code, G1/4 port, PT thread, and FA or LB mounting (no back cover or SDB is used). Because this SKU has no -S magnet, you cannot fit a sensor; if you need sensing on the new unit, specify an MBLJ-S to use CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M. The rear adjuster is a stop, not a lock.
If you need more than 628 N, you must step outside the MALJ/MBLJ mini range. At 125 mm stroke, check rod side-load: the 16 mm carbon-steel rod handles normal alignment but avoid lateral bending forces.
Upgrade checklist
- ✓ Order the MBLJ40X125-40 (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 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-40 FAQ
Yes, the MALJ40X125-40 is discontinued. The direct replacement is the MBLJ40X125-40, which matches the 40 mm bore, 125 mm stroke, 40 mm adjust code, and G1/4 port. The MBLJ upgrades the construction from threaded covers to a riveted rolling-packed body.
The 40 mm rear adjuster creates a usable stroke window of 85-125 mm. The adjuster is a travel stop, not a lock, and cannot hold a load without air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ40X125-40 replaces this model 1:1.
Fast Dispatch
MBLJ replacements are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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