This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ25X300-40, 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 MALJ25 Adjustable Mini Air Cylinder MALJ25X300-40
The AirTAC MALJ25 Adjustable Mini Air Cylinder MALJ25X300-40 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 260 to 300 mm. This model is discontinued — the direct replacement is the MBLJ25X300-40.
- BoreØ25 mm
- Stroke300 mm
- Adjust window260–300 mm
- Port sizeG1/8
- Rod threadM10×1.25
- StatusDiscontinued → MBLJ25X300-40
- 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 MALJ25 Adjustable Mini Air Cylinder MALJ25X300-40
The AirTAC MALJ25X300-40 is a discontinued double-acting, double-rod mini cylinder with a 25 mm bore and 300 mm stroke. A rear stopper screw lets you trim up to 40 mm, creating a usable end-position window of 260-300 mm without adding external stops. The direct replacement is the MBLJ25X300-40, matching the bore, stroke, port, and force.
This SKU lacks the -S magnet, so it cannot accept a position sensor. The MALJ uses a fixed rubber bumper and threaded covers, whereas the MBLJ upgrade features a riveted rolling-packed body. The rear adjuster acts purely as a travel stop to fine-tune reach; it does not hold load without live air pressure, so use an external lock for safety. With a 300 mm stroke on a 10 mm rod, minimize side-load to prevent rod bending.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X300-40 Technical Specifications
| Model | Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X300-40 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ25X300-40 |
| Bore size | Ø25 mm |
| Stroke | 300 mm |
| Adjustable window | 260 – 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 MBLJ25X300-40 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 MBLJ25X300-40 matches these values.
Model Code: Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X300-40
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 25 | Bore size in mm (20/25/32/40). |
| ×300 | Nominal stroke length in mm. |
| -40 | Adjustable amount: trim the end to a 260–300 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 MALJ25X300-40 Is Used
Carton Flap Folder
Adjust the rear stopper to tune the 300 mm extension for varying corrugated carton heights on a packaging line, ensuring the 206 N pull retracts the folder clear of the box.
Long-Reach Part Ejector
Trim the end position by 40 mm to eject molded plastic parts from a deep cavity press, preventing the rod from overextending and stressing the 10 mm rod under side-load.
Replacing the Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X300-40 with MBLJ25X300-40
To replace this MALJ25X300-40, order the direct replacement MBLJ25X300-40. Confirm the 25 mm bore, 300 mm stroke, 40 mm adjust code, G1/8 port, and PT thread. Mounting is Basic, FA, or LB only (no back cover or SDB allowed). Because this SKU lacks the -S magnet, it cannot hold a sensor; the MBLJ upgrade uses CMSG/DMSG/EMSG switches if sensing is later required. Remember the adjuster is a stop, not a lock.
Upgrade checklist
- ✓ Order the MBLJ25X300-40 (same bore/stroke/adjust)
- ✓ Same 260–300 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 MBLJ25X300-40 instead of this discontinued model.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X300-40 FAQ
Yes, the MALJ25X300-40 is discontinued. The direct replacement is the MBLJ25X300-40, matching the 25 mm bore, 300 mm stroke, 40 mm adjust code, G1/8 port, and force. The MBLJ upgrades the threaded covers to a riveted rolling-packed body.
The -40 adjust code allows trimming up to 40 mm at the rear, yielding a usable stroke window of 260-300 mm. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ25X300-40 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 MALJ25X300-40 → MBLJ25X300-40)
Tell us the quantity and destination — we quote the direct MBLJ25X300-40 replacement with price, stock and lead time, usually within 7-8 hours.