This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ25X300-20, 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 MALJ25X300-20
The AirTAC MALJ25 Adjustable Mini Air Cylinder MALJ25X300-20 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 280 to 300 mm. This model is discontinued — the direct replacement is the MBLJ25X300-20.
- BoreØ25 mm
- Stroke300 mm
- Adjust window280–300 mm
- Port sizeG1/8
- Rod threadM10×1.25
- StatusDiscontinued → MBLJ25X300-20
- 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 MALJ25X300-20
The AirTAC MALJ25X300-20 is a discontinued double-acting, double-rod mini cylinder with a rear adjustable stroke stopper. It provides a usable end-position window of 280-300 mm by trimming up to 20 mm off the standard 300 mm stroke.
The direct replacement is the MBLJ25X300-20, matching the bore, stroke, force, and G1/8 port. This SKU lacks a magnet (-S), so it cannot take a position sensor. The older MALJ uses threaded covers and PT port threads, while the MBLJ upgrades to a riveted rolling-packed body. Remember, the rear adjuster is a travel stop, not a lock; it cannot hold a load without live air pressure.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X300-20 Technical Specifications
| Model | Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X300-20 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ25X300-20 |
| Bore size | Ø25 mm |
| Stroke | 300 mm |
| Adjustable window | 280 – 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 MBLJ25X300-20 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 MBLJ25X300-20 matches these values.
Model Code: Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X300-20
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 25 | Bore size in mm (20/25/32/40). |
| ×300 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a 280–300 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 MALJ25X300-20 Is Used
PCB Edge Router Trimming
Dial in the exact 280-300 mm reach on a PCB depaneling router.
Textile Loom Feed Guide
Adjust the depth of a fabric feed mechanism in a textile loom. The 20 mm trim window compensates for varying material thicknesses, and the G1/8 port delivers rapid retraction for high-speed cycling.
Carton Flap Plow
Set the stroke stop on a packaging line carton plow to prevent over-travel. The fixed rubber bumper softens the end impact, protecting the 300 mm rod from shock loads during 30-800 mm/s operation.
Replacing the Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X300-20 with MBLJ25X300-20
To replace this MALJ25X300-20, order the exact direct replacement MBLJ25X300-20. Confirm the 25 mm bore, 300 mm stroke, 20 mm adjust code, G1/8 port, and PT thread form. Mounting remains Basic, FA, or LB only, as there is no back cover or SDB option. Because this SKU lacks the -S magnet, it cannot accept a sensor; the MBLJ upgrade would require CMSG/DMSG/EMSG switches if you add the -S suffix later. The adjuster is a travel stop, not a lock, so add an external lock for held loads.
At 300 mm stroke, the long rod is highly susceptible to side-load and bending; ensure your mounting guides absorb lateral stress to prevent premature seal failure.
Upgrade checklist
- ✓ Order the MBLJ25X300-20 (same bore/stroke/adjust)
- ✓ Same 280–300 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 MBLJ25X300-20 instead of this discontinued model.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X300-20 FAQ
Yes, the AirTAC MALJ25X300-20 is discontinued. The direct replacement is the MBLJ25X300-20, matching the 25 mm bore, 300 mm stroke, 20 mm adjust code, G1/8 port, and force. The MBLJ upgrades the threaded covers to a riveted rolling-packed body.
The usable stroke window is 280-300 mm (trimming up to 20 mm). The rear adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ25X300-20 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
Request a Quote (Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X300-20 → MBLJ25X300-20)
Tell us the quantity and destination — we quote the direct MBLJ25X300-20 replacement with price, stock and lead time, usually within 7-8 hours.