This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X25-20-LB, 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 MALJ20 Adjustable Mini Cylinder MALJ20X25-20-LB
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X25-20-LB 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 5 to 25 mm. This model is discontinued — the direct replacement is the MBLJ20X25-20-LB.
- BoreØ20 mm
- Stroke25 mm
- Adjust window5–25 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X25-20-LB
- 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 MALJ20 Adjustable Mini Cylinder MALJ20X25-20-LB
The AirTAC MALJ20X25-20-LB is a discontinued double-acting mini cylinder with a rear travel stop. It gives a usable extension window of 5-25 mm by trimming up to 20 mm off the 25 mm stroke. The direct replacement is the MBLJ20X25-20-LB.
This LB foot-mounted unit uses a G1/8 port and a fixed rubber bumper. Because this SKU lacks the -S magnet, it cannot take a position sensor. The adjuster is a travel stop, not a lock. Note the upgrade path: the legacy MALJ has threaded covers, while the MBLJ replacement features a riveted rolling-packed body.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X25-20-LB Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X25-20-LB |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X25-20-LB |
| Bore size | Ø20 mm |
| Stroke | 25 mm |
| Adjustable window | 5 – 25 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/8 |
| Rod thread | M8×1.25 |
| 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 MBLJ20X25-20-LB carries the same ratings.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 132 N | 132 N |
| 0.7 MPa | 185 N | — |
| Max (@1.0 MPa) | 27 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 MBLJ20X25-20-LB matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X25-20-LB
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×25 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a 5–25 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 MALJ20 Adjustable Mini Cylinder MALJ20X25-20-LB Is Used
PCB Router Depth Stop
Dials the final 5-25 mm reach on a depaneling tool. The 132 N pull retracts the blade safely without stressing the 20 mm bore rod.
Connector Seating Press
Fine-tunes the push force for delicate Molex pins.
Label Applicator Tamp
Adjusts the tamp stroke window for varying box heights. The LB foot mount holds the cylinder rigid while the rear screw sets the exact label depth.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X25-20-LB with MBLJ20X25-20-LB
To replace this MALJ20X25-20-LB, order the exact direct replacement MBLJ20X25-20-LB. Confirm the 20 mm bore, 25 mm stroke, 20 mm adjust code, G1/8 PT port, and LB foot mounting. This no-S SKU cannot hold a sensor; if you need position detection, step up to an MBLJ-S model which uses CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M. The adjuster sets end position but will not hold a load without live air.
At the shortest 5 mm adjusted extension, ensure the LB foot bolts clear the rod end to avoid mechanical binding.
Upgrade checklist
- ✓ Order the MBLJ20X25-20-LB (same bore/stroke/adjust)
- ✓ Same 5–25 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 MBLJ20X25-20-LB instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X25-20-LB FAQ
Yes, the MALJ20X25-20-LB is discontinued. The direct replacement is the MBLJ20X25-20-LB, matching the 20 mm bore, 25 mm stroke, 20 mm adjust code, G1/8 port, and LB mount. The MBLJ upgrades the body to a riveted rolling-packed design from the older threaded covers.
The usable stroke window is 5-25 mm via the 20 mm rear adjuster. The adjuster is a travel stop, not a lock, and cannot hold a load without air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X25-20-LB 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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