This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ40X25-30, 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 MALJ40X25-30
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-30 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 -5 to 25 mm. This model is discontinued — the direct replacement is the MBLJ40X25-30.
- BoreØ40 mm
- Stroke25 mm
- Adjust window-5–25 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X25-30
- 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 MALJ40X25-30
The AirTAC MALJ40X25-30 is a discontinued double-acting mini cylinder with a 40 mm bore and 25 mm stroke. It features a rear adjustable stopper allowing you to trim up to 30 mm, creating a usable stroke window from 0 mm to 25 mm. The direct replacement is the MBLJ40X25-30, matching the bore, stroke, port, and force.
This SKU lacks a magnet (-S), so it cannot accept a position sensor. The fixed rubber bumper softens end impact, but the adjuster is a travel stop, not a lock. The original MALJ uses threaded covers and PT tapered port threads, while the MBLJ upgrade features a riveted rolling-packed body for greater durability. Operating pressure is 0.1-1.0 MPa.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-30 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-30 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X25-30 |
| Bore size | Ø40 mm |
| Stroke | 25 mm |
| Adjustable window | -5 – 25 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 MBLJ40X25-30 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 MBLJ40X25-30 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-30
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×25 | Nominal stroke length in mm. |
| -30 | Adjustable amount: trim the end to a -5–25 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 MALJ40X25-30 Is Used
PCB Router Z-Axis Stop
Dial in the exact 0-25 mm descent on a printed circuit board routing spindle.
Sheet Metal Forming Depth
Control the bottom dead center on a small pneumatic press brake. The 30 mm adjust window lets you tune bend depth for different material thicknesses, while the 16 mm rod handles the 880 N peak force at 0.7 MPa.
Packaging Flap Folder
Fine-tune the folding stroke on a carton erector. The rear stopper lets you shift the end position to match varying box dimensions, ensuring precise mechanical reach without swapping hardware.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-30 with MBLJ40X25-30
To replace the MALJ40X25-30, order the MBLJ40X25-30. Confirm the 40 mm bore, 25 mm stroke, 30 mm adjust code, G1/4 port, and PT thread. Mounting is Basic, FA, or LB only (no back cover or SDB). Since this SKU has no magnet, it cannot take a sensor; if you need sensing on the new unit, add -S to switch to the CMSG/DMSG/EMSG sensor family. Remember the adjuster sets end position but will not hold a load without live air.
The 40 mm bore uniquely uses a G1/4 port and a 16 mm hard-chrome rod. With a 25 mm stroke, side-load risk is minimal.
Upgrade checklist
- ✓ Order the MBLJ40X25-30 (same bore/stroke/adjust)
- ✓ Same -5–25 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 MBLJ40X25-30 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-30 FAQ
Yes, the MALJ40X25-30 is discontinued. The direct replacement is the MBLJ40X25-30, matching the 40 mm bore, 25 mm stroke, 30 mm adjust code, G1/4 port, and force. The MBLJ upgrades the body to a riveted rolling-packed design from the original threaded covers.
The 30 mm adjust code lets you trim the 25 mm stroke, giving a usable window from 0 mm to 25 mm. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ40X25-30 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 MALJ40X25-30 → MBLJ40X25-30)
Tell us the quantity and destination — we quote the direct MBLJ40X25-30 replacement with price, stock and lead time, usually within 7-8 hours.