This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ25X400-50, 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 MALJ25X400-50
The AirTAC MALJ25 Adjustable Mini Air Cylinder MALJ25X400-50 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 50 mm, giving a usable end-position window from 350 to 400 mm. This model is discontinued — the direct replacement is the MBLJ25X400-50.
- BoreØ25 mm
- Stroke400 mm
- Adjust window350–400 mm
- Port sizeG1/8
- Rod threadM10×1.25
- StatusDiscontinued → MBLJ25X400-50
- 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 MALJ25X400-50
The AirTAC MALJ25X400-50 is a discontinued adjustable-stroke mini cylinder. The 50 mm rear stopper screw creates a usable travel window of 350-400 mm. This is a non-standard 400 mm stroke (exceeding the 300 mm standard for bore 25), likely made-to-order. The direct replacement is the MBLJ25X400-50, matching the G1/8 port, M10x1.25 rod thread, and force.
This SKU lacks a -S magnet, so it cannot accept a position sensor. The adjuster is a travel stop, not a lock; it cannot hold a load without live air. The fixed rubber bumper softens end impact, but unlike the current-line MBLC, there is no adjustable air cushion. The MBLJ25X400-50 upgrade shifts from threaded covers to a riveted rolling-packed body.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-50 Technical Specifications
| Model | Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-50 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ25X400-50 |
| Bore size | Ø25 mm |
| Stroke | 400 mm |
| Adjustable window | 350 – 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 MBLJ25X400-50 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 MBLJ25X400-50 matches these values.
Model Code: Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-50
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 25 | Bore size in mm (20/25/32/40). |
| ×400 | Nominal stroke length in mm. |
| -50 | Adjustable amount: trim the end to a 350–400 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 MALJ25X400-50 Is Used
Long-Travel Forming Press
Adjusts the rear stopper to fine-tune the 400 mm end position for varying sheet metal depths, relying on the fixed rubber bumper to absorb the 206 N pull impact.
Automated Dispensing Valve
Sets a precise 350 mm retraction window for a fluid dispensing needle, taking advantage of the non-standard 400 mm stroke to reach deep into a housing.
Replacing the Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-50 with MBLJ25X400-50
To replace the MALJ25X400-50, order the exact MBLJ25X400-50 direct. Confirm the 25 mm bore, 400 mm stroke, 50 mm adjust code, G1/8 port, PT thread, and FA/LB mounting (no back cover or SDB). Because this SKU has no -S magnet, it cannot take a sensor; the MBLJ upgrade uses CMSG/DMSG/EMSG switches if you add an -S later. The rear adjuster sets end position but does not hold load without air; use an external lock for suspended loads.
At 400 mm stroke, the 10 mm rod is highly susceptible to side-load bending; ensure rigid guidance to prevent binding.
Upgrade checklist
- ✓ Order the MBLJ25X400-50 (same bore/stroke/adjust)
- ✓ Same 350–400 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 MBLJ25X400-50 instead of this discontinued model.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-50 FAQ
Yes, the MALJ25X400-50 is discontinued. The direct replacement is the MBLJ25X400-50, matching the 25 mm bore, 400 mm stroke, 50 mm adjust code, G1/8 port, and force. The MBLJ upgrades the body to a riveted rolling-packed design from the original threaded covers.
The 50 mm adjust code allows trimming the end position, creating a usable window from 350 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 MBLJ25X400-50 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 MALJ25X400-50 → MBLJ25X400-50)
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