This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ25X400-40-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 MALJ25X400-40-S
The AirTAC MALJ25 Adjustable Mini Air Cylinder MALJ25X400-40-S 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 360 to 400 mm. This model is discontinued — the direct replacement is the MBLJ25X400-40-S.
- BoreØ25 mm
- Stroke400 mm
- Adjust window360–400 mm
- Port sizeG1/8
- Rod threadM10×1.25
- StatusDiscontinued → MBLJ25X400-40-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 MALJ25X400-40-S
The AirTAC MALJ25X400-40-S is a discontinued double-acting, double-rod mini cylinder with a 25mm bore and a 400mm stroke. The 40mm adjust code creates a usable travel window of 360-400mm by trimming the rear position. The direct replacement is the MBLJ25X400-40-S, matching bore, stroke, adjust code, and G1/8 port.
This unit features a -S magnet compatible with CS1-M / DS1-M switches; the MBLJ replacement upgrades to CMSG / DMSG / EMSG sensors. The original MALJ uses threaded covers, while the MBLJ features a riveted rolling-packed body. The rear adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. A fixed rubber bumper softens the end impact. Since 400mm exceeds the 300mm standard stroke max for bore 25, this is a non-standard, made-to-order length requiring careful rod-bending and side-load management.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-40-S Technical Specifications
| Model | Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-40-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ25X400-40-S |
| Bore size | Ø25 mm |
| Stroke | 400 mm |
| Adjustable window | 360 – 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 MBLJ25X400-40-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 MBLJ25X400-40-S matches these values.
Model Code: Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-40-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. |
| -40 | Adjustable amount: trim the end to a 360–400 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 MALJ25X400-40-S Is Used
PCB Edge Router Trimming
Dials the 360-400mm reach on a PCB depaneling conveyor.
Carton Flap Folder Stroke
Adjusts the end position on a 400mm packaging arm. The 40mm rear window lets operators shift the fold timing for different carton widths without adding physical spacers.
Textile Fabric Stretching Jig
Sets precise tension on a long-stroke fabric puller. The travel stop dials the exact 360mm minimum pull length, while the fixed rubber bumper absorbs the 206N retract impact.
Replacing the Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-40-S with MBLJ25X400-40-S
Replace this MALJ25X400-40-S with the exact direct replacement MBLJ25X400-40-S. Confirm the 25mm bore, 400mm stroke, 40mm adjust code, PT G1/8 port, and M10x1.25 rod thread. Mounting is FA or LB only; there is no back cover or SDB option. The -S magnet switches from CS1-M / DS1-M to CMSG / DMSG / EMSG on the new MBLJ. Remember the rear adjuster is a stop, not a lock.
At 400mm stroke, the extended 10mm rod is highly susceptible to side-load bending; ensure rigid guide rails to prevent premature seal wear.
Upgrade checklist
- ✓ Order the MBLJ25X400-40-S (same bore/stroke/adjust)
- ✓ Same 360–400 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 MBLJ25X400-40-S instead of this discontinued model.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-40-S FAQ
Yes, the MALJ25X400-40-S is discontinued. The direct replacement is the MBLJ25X400-40-S, which matches the 25mm bore, 400mm stroke, 40mm adjust code, G1/8 port, and force. You must upgrade your sensors: the old MALJ -S magnet used CS1-M / DS1-M switches, while the new MBLJ uses CMSG / DMSG / EMSG switches.
The 40mm adjust code lets you trim the rear position, creating a usable stroke window of 360-400mm. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ25X400-40-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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