This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X40-10, 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 MALJ20X40-10
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X40-10 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 10 mm, giving a usable end-position window from 30 to 40 mm. This model is discontinued — the direct replacement is the MBLJ20X40-10.
- BoreØ20 mm
- Stroke40 mm
- Adjust window30–40 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X40-10
- 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 MALJ20X40-10
The AirTAC MALJ20X40-10 is a discontinued double-acting, adjustable-stroke mini cylinder. It has a 20 mm bore, 40 mm stroke, and a rear screw stopper that trims up to 10 mm, giving a usable end-position window of 30-40 mm. The direct replacement is the MBLJ20X40-10, matching the bore, stroke, adjust code, G1/8 port, and mounting.
This SKU lacks a magnet (-S), so it cannot take a position sensor. The rear adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. The cylinder uses a fixed rubber bumper and threaded covers, whereas the MBLJ replacement features a riveted rolling-packed body. If you need position sensing on the new unit, the MBLJ uses CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X40-10 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X40-10 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X40-10 |
| Bore size | Ø20 mm |
| Stroke | 40 mm |
| Adjustable window | 30 – 40 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 MBLJ20X40-10 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 MBLJ20X40-10 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X40-10
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×40 | Nominal stroke length in mm. |
| -10 | Adjustable amount: trim the end to a 30–40 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 MALJ20X40-10 Is Used
Small-Part Ejector Pin
Fine-tune the ejection reach on a micro-injection mold by trimming 10 mm off the 40 mm stroke, preventing the 8 mm rod from over-traveling and damaging fragile plastic parts.
Wire Forming Guide
Adjust the end position by up to 10 mm to guide wire-bending heads, ensuring the 132 N pull force retracts the guide precisely without needing external mechanical stops.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X40-10 with MBLJ20X40-10
To replace the MALJ20X40-10, specify the MBLJ20X40-10 to keep the 20 mm bore, 40 mm stroke, 10 mm adjuster, G1/8 port, and FA/LB mounting. Because this SKU has no -S magnet, it cannot accept a sensor; if your upgrade requires sensing, select an MBLJ20X40-10S and use CMSG/DMSG/EMSG switches. The adjuster is a travel stop, not a lock.
If you need to step the bore down, the next available size is 12 mm (confirm from datasheet for force).
Upgrade checklist
- ✓ Order the MBLJ20X40-10 (same bore/stroke/adjust)
- ✓ Same 30–40 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 MBLJ20X40-10 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X40-10 FAQ
Yes, the MALJ20X40-10 is discontinued. The direct replacement is the MBLJ20X40-10, which matches the 20 mm bore, 40 mm stroke, 10 mm adjust code, G1/8 port, and mounting. The new MBLJ uses a riveted body instead of threaded covers.
The -10 adjust code lets you trim up to 10 mm at the rear, giving a usable stroke window of 30-40 mm. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X40-10 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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