This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ25X400-30-S, 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 MALJ25X400-30-S
The AirTAC MALJ25 Adjustable Mini Air Cylinder MALJ25X400-30-S 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 370 to 400 mm. This model is discontinued — the direct replacement is the MBLJ25X400-30-S.
- BoreØ25 mm
- Stroke400 mm
- Adjust window370–400 mm
- Port sizeG1/8
- Rod threadM10×1.25
- StatusDiscontinued → MBLJ25X400-30-S
- 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 MALJ25X400-30-S
The AirTAC MALJ25X400-30-S is a discontinued double-acting double-rod cylinder with a rear adjustable stopper. It provides a usable stroke window of 370-400 mm by letting you trim up to 30 mm at the rear screw. The direct replacement is the MBLJ25X400-30-S, matching the bore, stroke, adjust code, port, and mounting.
This non-standard 400 mm stroke exceeds the 300 mm standard limit and is made-to-order. The adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. The fixed rubber bumper softens end impact, but this is not an adjustable air cushion. The original MALJ uses threaded covers and a CS1-M / DS1-M magnet sensor, whereas the MBLJ upgrade features a riveted rolling-packed body and CMSG / DMSG / EMSG sensors.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-30-S Technical Specifications
| Model | Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-30-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ25X400-30-S |
| Bore size | Ø25 mm |
| Stroke | 400 mm |
| Adjustable window | 370 – 400 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 MBLJ25X400-30-S 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 MBLJ25X400-30-S matches these values.
Model Code: Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-30-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 25 | Bore size in mm (20/25/32/40). |
| ×400 | Nominal stroke length in mm. |
| -30 | Adjustable amount: trim the end to a 370–400 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 MALJ25X400-30-S Is Used
PCB Router Depth Stop
Dials the exact 370-400 mm reach on a PCB depaneling router.
Textile Loom Beam Pusher
Feeds warp beams into a weaving loom. The 30 mm rear trim fine-tunes the loading depth without external shims, while the 206 N pull retracts the rod clear of the heavy beam path.
Carton Flap Tucking Arm
Tucks packaging flaps on a random-size carton erector. The adjustable end position lets operators shorten the stroke for shallow boxes, preventing the rod from crushing the cardboard.
Replacing the Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-30-S with MBLJ25X400-30-S
To replace this MALJ25X400-30-S, order the exact direct replacement MBLJ25X400-30-S. Confirm the 25 mm bore, 400 mm stroke, 30 mm adjust code, G1/8 port, PT thread, and FA/LB mounting (no back cover or SDB). The -S magnet changes sensor family from CS1-M / DS1-M to CMSG / DMSG / EMSG. At 400 mm, rod side-load risks bending the 10 mm rod—ensure guide alignment. The adjuster is a stop, not a lock; use an external lock for held loads.
Upgrade checklist
- ✓ Order the MBLJ25X400-30-S (same bore/stroke/adjust)
- ✓ Same 370–400 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 MBLJ25X400-30-S instead of this discontinued model.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-30-S FAQ
Yes, the MALJ25X400-30-S is discontinued. The direct replacement is the MBLJ25X400-30-S, matching the 25 mm bore, 400 mm stroke, 30 mm adjust code, G1/8 port, and mounting. The MBLJ upgrades the body to a riveted rolling-packed design and changes the -S magnet sensor family from CS1-M / DS1-M to CMSG / DMSG / EMSG.
The -30 adjust code allows you to trim up to 30 mm at the rear screw, creating a usable stroke window from 370 mm to 400 mm. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ25X400-30-S 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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