This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ40X125-30, 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 MALJ40X125-30
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-30 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 30 mm, giving a usable end-position window from 95 to 125 mm. This model is discontinued — the direct replacement is the MBLJ40X125-30.
- BoreØ40 mm
- Stroke125 mm
- Adjust window95–125 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X125-30
- 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 MALJ40X125-30
The AirTAC MALJ40X125-30 is a discontinued 40mm bore, double-acting double-rod mini cylinder with a 125mm stroke and a 30mm rear adjustable travel stop. This yields a usable end-position window of 95-125mm. The direct replacement is the MBLJ40X125-30, matching the bore, stroke, adjust code, G1/4 port, and 128kgf max force.
This SKU lacks the -S magnet, so it cannot accept a position sensor. Beyond the sensor family change (CS1-M/DS1-M to CMSG/DMSG/EMSG on the MBLJ), the upgrade shifts from threaded covers to a riveted rolling-packed body. The adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. Impact is softened only by a fixed rubber bumper, as there is no adjustable air cushion.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-30 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-30 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X125-30 |
| Bore size | Ø40 mm |
| Stroke | 125 mm |
| Adjustable window | 95 – 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 MBLJ40X125-30 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 MBLJ40X125-30 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-30
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×125 | Nominal stroke length in mm. |
| -30 | Adjustable amount: trim the end to a 95–125 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 MALJ40X125-30 Is Used
CNC Lathe Bar Feeders
Set the exact 110mm stop position to push raw bar stock into the spindle collet, leveraging the G1/4 port's high flow for rapid retraction between cycles.
Woodworking Panel Presses
Fine-tune the clamp depth on edge-banding assemblies, ensuring the fixed rubber bumper absorbs the 880N peak impact force at 0.7MPa without marring the workpiece.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-30 with MBLJ40X125-30
To replace the MALJ40X125-30, order the MBLJ40X125-30. Confirm the 40mm bore, 125mm stroke, 30mm adjust code, PT G1/4 port, M12x1.25 rod thread, and FA/LB mounting (no back cover or SDB allowed). Because this SKU has no -S magnet, you lose position sensing unless the MBLJ is ordered with the -S option and CMSG/DMSG/EMSG switches. The adjuster is a stop, not a lock; add an external lock for held loads. At 125mm stroke, watch rod bending under side loads.
If stepping up, there is no larger MALJ bore, so you would leave the mini format entirely.
Upgrade checklist
- ✓ Order the MBLJ40X125-30 (same bore/stroke/adjust)
- ✓ Same 95–125 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 MBLJ40X125-30 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-30 FAQ
Yes, the MALJ40X125-30 is discontinued. The direct replacement is the MBLJ40X125-30, which matches the 40mm bore, 125mm stroke, 30mm adjust code, G1/4 port, and FA/LB mounting. The MBLJ upgrades the body to a riveted rolling-packed design from the MALJ's threaded covers, and uses CMSG/DMSG/EMSG sensors if ordered with a magnet.
The 30mm adjust code lets you trim the rear stop, creating a usable stroke window of 95-125mm. 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.
Direct Upgrade
The MBLJ40X125-30 replaces this model 1:1.
Fast Dispatch
MBLJ replacements are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Recommended AirTAC MBLJ Replacements
Request a Quote (Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-30 → MBLJ40X125-30)
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