This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ25X400-20-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 MALJ25X400-20-S
The AirTAC MALJ25 Adjustable Mini Air Cylinder MALJ25X400-20-S 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 380 to 400 mm. This model is discontinued — the direct replacement is the MBLJ25X400-20-S.
- BoreØ25 mm
- Stroke400 mm
- Adjust window380–400 mm
- Port sizeG1/8
- Rod threadM10×1.25
- StatusDiscontinued → MBLJ25X400-20-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 MALJ25X400-20-S
The AirTAC MALJ25X400-20-S is a discontinued double-acting double-rod mini cylinder with a 400mm stroke and a 20mm rear adjustable stopper, yielding a usable travel window of 380-400mm. The direct replacement is the MBLJ25X400-20-S, matching the bore, stroke, adjust code, port, and mounting.
This non-standard 400mm stroke exceeds the 300mm catalog maximum for bore 25, making it a special-order item. The rear adjuster is a travel stop, not a lock; it sets the end position but cannot hold a load without live air. The fixed rubber bumper softens impact, but this is not an adjustable cushion. Upgrading to the MBLJ25X400-20-S changes the body from threaded covers to a riveted rolling-packed design, and the -S magnet switches from CS1-M/DS1-M to CMSG/DMSG/EMSG sensors.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-20-S Technical Specifications
| Model | Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-20-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ25X400-20-S |
| Bore size | Ø25 mm |
| Stroke | 400 mm |
| Adjustable window | 380 – 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 MBLJ25X400-20-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 MBLJ25X400-20-S matches these values.
Model Code: Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-20-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. |
| -20 | Adjustable amount: trim the end to a 380–400 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 MALJ25X400-20-S Is Used
Carton Flap Folder
Adjusts the rear stop by up to 20mm to fine-tune the folding arm reach on packaging lines, preventing the 10mm rod from bottoming out under varying box depths.
Pallet Dispenser Gate
Sets a precise end position for the pallet stopper gate, trimming the 400mm stroke to match stack height variations while relying on external locks for load holding.
Replacing the Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-20-S with MBLJ25X400-20-S
To replace this MALJ25X400-20-S, order the MBLJ25X400-20-S. Confirm the G1/8 port, M10x1.25 rod-end thread, and FA/LB mounting (no back cover or SDB). The -S magnet requires CMSG/DMSG/EMSG switches on the new body. Because the 400mm stroke exceeds the 300mm standard and uses a 10mm rod, long-stroke side-load bending is a high risk—ensure rigid guiding to prevent rod damage.
Upgrade checklist
- ✓ Order the MBLJ25X400-20-S (same bore/stroke/adjust)
- ✓ Same 380–400 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 MBLJ25X400-20-S instead of this discontinued model.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-20-S FAQ
Yes, the MALJ25X400-20-S is discontinued. The direct replacement is the MBLJ25X400-20-S, which matches the 25mm bore, 400mm stroke, 20mm adjust code, G1/8 port, and FA/LB mounting. The MBLJ uses a riveted rolling-packed body instead of threaded covers, and the -S magnet requires CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M.
The -20 adjust code provides a usable travel window of 380-400mm. The rear adjuster acts as a travel stop, not a lock, so it cannot hold a load without live air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ25X400-20-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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