This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ25X125-20, 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 MALJ25 Adjustable Mini Air Cylinder MALJ25X125-20
The AirTAC MALJ25 Adjustable Mini Air Cylinder MALJ25X125-20 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 20 mm, giving a usable end-position window from 105 to 125 mm. This model is discontinued — the direct replacement is the MBLJ25X125-20.
- BoreØ25 mm
- Stroke125 mm
- Adjust window105–125 mm
- Port sizeG1/8
- Rod threadM10×1.25
- StatusDiscontinued → MBLJ25X125-20
- 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 MALJ25 Adjustable Mini Air Cylinder MALJ25X125-20
The AirTAC MALJ25X125-20 is a discontinued double-acting mini cylinder with a 20 mm rear adjustable stroke stopper, yielding a usable travel window of 105-125 mm. The direct replacement is the MBLJ25X125-20, matching the bore, stroke, force, and port.
This SKU lacks the -S magnet option and cannot accept a position sensor. Unlike the current MBLJ riveted body, the MALJ uses threaded covers, and upgrading means changing from the older CS1-M/DS1-M sensor family to CMSG/DMSG/EMSG if needed. The fixed rubber bumper softens end impacts, but the adjuster is a travel stop, not a lock; it will not hold a load without live air pressure.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X125-20 Technical Specifications
| Model | Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X125-20 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ25X125-20 |
| Bore size | Ø25 mm |
| Stroke | 125 mm |
| Adjustable window | 105 – 125 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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 300 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 MBLJ25X125-20 carries the same ratings.
Theoretical Output Force (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 206 N | 206 N |
| 0.7 MPa | 289 N | — |
| Max (@1.0 MPa) | 42 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 MBLJ25X125-20 matches these values.
Model Code: Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X125-20
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 25 | Bore size in mm (20/25/32/40). |
| ×125 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a 105–125 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 MALJ25 Adjustable Mini Air Cylinder MALJ25X125-20 Is Used
Dispenser Valve Tamping
Fine-tunes the seating depth of a pneumatic glue valve on an automotive assembly line, ensuring the rubber bumper absorbs the end impact without air cushions.
Wire Harness Crimp Press
Adjusts the rear stopper to set precise terminal crimp heights, relying on the 206 N pull force to retract the tooling safely.
Replacing the Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X125-20 with MBLJ25X125-20
To replace the MALJ25X125-20, order the MBLJ25X125-20. Confirm the 25 mm bore, 125 mm stroke, 20 mm adjust code, G1/8 port, and M10x1.25 rod thread. Mounting is FA or LB only (no back cover or SDB). Because this SKU has no -S magnet, it cannot take a sensor; if your new design needs detection, specify an MBLJ with the -S suffix and use CMSG/DMSG/EMSG switches. Remember the adjuster sets end position but does not hold load without air.
At 125 mm stroke, keep side-load minimized; excessive rod bending wear risks seal failure, so use a guide to protect the 10 mm rod.
Upgrade checklist
- ✓ Order the MBLJ25X125-20 (same bore/stroke/adjust)
- ✓ Same 105–125 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 MBLJ25X125-20 instead of this discontinued model.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X125-20 FAQ
Yes, the MALJ25X125-20 is discontinued. The direct replacement is the MBLJ25X125-20, which matches the 25 mm bore, 125 mm stroke, 20 mm adjust code, G1/8 port, and force. The MBLJ upgrades the body to a riveted rolling-packed design from the original threaded covers.
The 20 mm rear adjuster is a travel stop that lets you trim the end position, creating a usable window of 105-125 mm. It does not lock the load without live air; use an external lock for holding.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ25X125-20 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
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