This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X150-40, 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 MALJ20X150-40
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X150-40 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 110 to 150 mm. This model is discontinued — the direct replacement is the MBLJ20X150-40.
- BoreØ20 mm
- Stroke150 mm
- Adjust window110–150 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X150-40
- 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 MALJ20X150-40
The AirTAC MALJ20X150-40 is a discontinued double-acting mini cylinder with a 20 mm bore and 150 mm stroke. Its rear adjuster trims up to 40 mm, giving a usable end-position window of 110-150 mm. The direct replacement is the MBLJ20X150-40, matching the bore, stroke, force, and port.
This SKU lacks the -S magnet, so it cannot take a position sensor. The adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. The fixed rubber bumper softens end impact. Upgrading to the MBLJ20X150-40 moves you from threaded covers to a riveted rolling-packed body, but the PT G1/8 port and M8x1.25 rod thread remain.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X150-40 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X150-40 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X150-40 |
| Bore size | Ø20 mm |
| Stroke | 150 mm |
| Adjustable window | 110 – 150 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 MBLJ20X150-40 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 MBLJ20X150-40 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X150-40
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×150 | Nominal stroke length in mm. |
| -40 | Adjustable amount: trim the end to a 110–150 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 MALJ20X150-40 Is Used
Light-Actuator Lever Testing
Sets a repeatable 120 mm reach to cycle a micro-switch lever on a test rig, where the 132 N pull retracts the probe cleanly and the fixed rubber bumper prevents shock damage.
Dispensing Valve Depth Stop
Trims the rear screw to hit a 140 mm dispensing height for a fluid valve on a filler, fine-tuning the shot volume without swapping the cylinder or machining new hard stops.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X150-40 with MBLJ20X150-40
Replace this MALJ20X150-40 directly with the MBLJ20X150-40. Confirm the 20 mm bore, 150 mm stroke, 40 mm adjust code, G1/8 port, and M8x1.25 rod thread. Mounting is FA or LB only; there is no back cover or SDB option. Because this SKU has no -S magnet, it cannot accept a sensor. If you need a sensor on the MBLJ replacement, you must order an -S model and use CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M. The adjuster sets the end position but does not hold load without air; use an external lock for held loads.
At a 150 mm stroke on an 8 mm rod, watch for side-load and rod-bending forces.
Upgrade checklist
- ✓ Order the MBLJ20X150-40 (same bore/stroke/adjust)
- ✓ Same 110–150 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 MBLJ20X150-40 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X150-40 FAQ
Yes, the MALJ20X150-40 is discontinued. The direct replacement is the MBLJ20X150-40, which matches the 20 mm bore, 150 mm stroke, 40 mm adjust code, G1/8 port, and mounting. The MBLJ upgrades the body from threaded covers to a riveted rolling-packed design.
The 40 mm adjust code lets you trim the rear travel stop, giving a usable stroke window of 110-150 mm. The adjuster is a travel stop, not a lock, and this no-magnet SKU cannot take a sensor.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X150-40 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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