This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ25X300-50, 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 MALJ25X300-50
The AirTAC MALJ25 Adjustable Mini Air Cylinder MALJ25X300-50 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 250 to 300 mm. This model is discontinued — the direct replacement is the MBLJ25X300-50.
- BoreØ25 mm
- Stroke300 mm
- Adjust window250–300 mm
- Port sizeG1/8
- Rod threadM10×1.25
- StatusDiscontinued → MBLJ25X300-50
- 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 MALJ25X300-50
The AirTAC MALJ25X300-50 is a discontinued double-acting mini cylinder with a 50 mm rear adjustable stroke stopper. It gives a usable end-position window of 250-300 mm. The direct replacement is the MBLJ25X300-50, matching the 300 mm stroke, 50 mm adjuster, G1/8 port, and FA/LB mounting.
This SKU lacks the -S suffix, so it cannot take a position sensor. The rear adjuster sets travel but is a stop, not a lock; it will not hold a load without live air. The fixed rubber bumper softens end impact. Upgrading to the MBLJ25X300-50 changes the construction from threaded covers to a riveted rolling-packed body, and if you later need a sensor, the MBLJ uses CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X300-50 Technical Specifications
| Model | Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X300-50 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ25X300-50 |
| Bore size | Ø25 mm |
| Stroke | 300 mm |
| Adjustable window | 250 – 300 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 MBLJ25X300-50 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 MBLJ25X300-50 matches these values.
Model Code: Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X300-50
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 25 | Bore size in mm (20/25/32/40). |
| ×300 | Nominal stroke length in mm. |
| -50 | Adjustable amount: trim the end to a 250–300 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 MALJ25X300-50 Is Used
PCB Conveyor Diverter
Dial in the 250-300 mm reach on a printed-circuit-board conveyor gate.
Carton Flap Folder
Set exact 270 mm flap tuck depth on a packaging line. The rear stopper lets you tune the fold without machining new hardstops, while the fixed bumper absorbs the 300 mm stroke impact.
Textile Beam Stop
Act as a depth stop for a textile loom beam loader. The 206 N pull force retracts the stop clear of the warp beam, and the 50 mm adjust window fine-tunes the loading cradle position.
Replacing the Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X300-50 with MBLJ25X300-50
To replace the MALJ25X300-50, order the exact MBLJ25X300-50 direct. Confirm the 25 mm bore, 300 mm stroke, 50 mm adjust code, PT G1/8 port, M10x1.25 rod thread, and FA/LB mounting (no back cover or SDB). Because this is a no-S SKU, it cannot accept a sensor; the MBLJ upgrade opens the door to CMSG/DMSG/EMSG switches if needed. The adjuster is a travel stop, not a load lock.
At 300 mm stroke on a 25 mm bore, use careful guide alignment to prevent rod bending and side-load wear.
Upgrade checklist
- ✓ Order the MBLJ25X300-50 (same bore/stroke/adjust)
- ✓ Same 250–300 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 MBLJ25X300-50 instead of this discontinued model.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X300-50 FAQ
Yes, the MALJ25X300-50 is discontinued. The direct replacement is the MBLJ25X300-50. It matches the 25 mm bore, 300 mm stroke, 50 mm adjuster, G1/8 port, and 50 kgf max force. The MBLJ upgrades the body to a riveted rolling-packed design from the original threaded covers.
The 50 mm rear adjuster provides a usable stroke window from 250 mm to 300 mm. Remember the adjuster is a travel stop, not a lock; it cannot hold a load without continuous air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ25X300-50 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 MALJ25 Adjustable Mini Air Cylinder MALJ25X300-50 → MBLJ25X300-50)
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