This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ25X120-20, 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 MALJ25X120-20
The AirTAC MALJ25 Adjustable Mini Air Cylinder MALJ25X120-20 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 100 to 120 mm. This model is discontinued — the direct replacement is the MBLJ25X120-20.
- BoreØ25 mm
- Stroke120 mm
- Adjust window100–120 mm
- Port sizeG1/8
- Rod threadM10×1.25
- StatusDiscontinued → MBLJ25X120-20
- 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 MALJ25X120-20
The AirTAC MALJ25X120-20 is a discontinued double-acting, double-rod mini cylinder with a rear adjustable stroke stopper. It trims up to 20mm at the rear, creating a usable 100-120mm end-position window. The direct replacement is the MBLJ25X120-20, matching the 25mm bore, 120mm stroke, G1/8 port, and force ratings.
It uses a fixed rubber bumper, not an adjustable air cushion. The adjuster is a travel stop, not a lock, so it will not hold a load without live air. This SKU lacks a magnet, so it cannot take a position sensor. The original MALJ has threaded covers, while the MBLJ upgrade uses a riveted rolling-packed body.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X120-20 Technical Specifications
| Model | Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X120-20 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ25X120-20 |
| Bore size | Ø25 mm |
| Stroke | 120 mm |
| Adjustable window | 100 – 120 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 MBLJ25X120-20 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 MBLJ25X120-20 matches these values.
Model Code: Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X120-20
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 25 | Bore size in mm (20/25/32/40). |
| ×120 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a 100–120 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 MALJ25X120-20 Is Used
Leather Press Tensioner
Fine-tune the end position on a hide-flattening press by trimming 20mm, ensuring consistent material thickness without adding external spacers.
Carton Flap Folder
Adjust the stroke window on a packaging line to fold varying box flap heights, relying on the fixed rubber bumper to soften the end impact.
Replacing the Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X120-20 with MBLJ25X120-20
To replace the MALJ25X120-20, order the exact direct replacement MBLJ25X120-20. Confirm the 25mm bore, 120mm stroke, 20mm adjust code, PT G1/8 port, and FA/LB mounting. Because this SKU lacks the -S magnet, it cannot hold a sensor; if you need position detection, step up to an MBLJ25X120-20S, which uses the modern CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M. Remember the adjuster is a stop, not a lock, so add an external lock for held loads.
Since the 120mm stroke is below the 300mm max for this bore, rod-bending is minimal, but you should still avoid excessive side loads to protect the 10mm hard-chrome rod.
Upgrade checklist
- ✓ Order the MBLJ25X120-20 (same bore/stroke/adjust)
- ✓ Same 100–120 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 MBLJ25X120-20 instead of this discontinued model.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X120-20 FAQ
Yes, the AirTAC MALJ25X120-20 is discontinued. The direct replacement is the MBLJ25X120-20, which matches the 25mm bore, 120mm stroke, 20mm adjust code, G1/8 port, and mounting. The MBLJ upgrades the body to a riveted rolling-packed design from the original threaded covers.
The -20 adjust code lets you trim up to 20mm at the rear, creating a usable 100-120mm stroke window. The adjuster is 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 MBLJ25X120-20 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 MALJ25X120-20 → MBLJ25X120-20)
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