This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X80-50, 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 MALJ20 Adjustable Mini Cylinder MALJ20X80-50
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-50 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 30 to 80 mm. This model is discontinued — the direct replacement is the MBLJ20X80-50.
- BoreØ20 mm
- Stroke80 mm
- Adjust window30–80 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X80-50
- 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 MALJ20 Adjustable Mini Cylinder MALJ20X80-50
The AirTAC MALJ20X80-50 is a discontinued double-acting, double-rod mini cylinder. Its rear adjuster lets you trim the stroke by up to 50 mm, creating a usable end-position window of 30-80 mm. The direct replacement is the MBLJ20X80-50, which matches the bore, stroke, G1/8 port, and force.
This SKU lacks the -S magnet, so it cannot take a position sensor. The original MALJ uses threaded covers and a fixed rubber bumper; the MBLJ upgrade features a riveted rolling-packed body. The adjuster is a travel stop, not a lock, so it sets the end position but will not hold a load without live air pressure.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-50 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-50 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X80-50 |
| Bore size | Ø20 mm |
| Stroke | 80 mm |
| Adjustable window | 30 – 80 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 MBLJ20X80-50 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 MBLJ20X80-50 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-50
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×80 | Nominal stroke length in mm. |
| -50 | Adjustable amount: trim the end to a 30–80 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 MALJ20X80-50 Is Used
Connector Insertion Depth
Sets a precise 30-80 mm reach for pressing pin headers into housings, preventing over-travel on delicate plastic connectors.
Label Applicator Plunge
Adjusts the tamp stroke to match varying box heights, ensuring the 132 N pull retracts the pad cleanly without tearing labels.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-50 with MBLJ20X80-50
To replace the MALJ20X80-50, order the MBLJ20X80-50. Confirm the 20 mm bore, 80 mm stroke, 50 mm adjust code, G1/8 port, M8x1.25 rod-end thread, and PT thread form. Mounting is Basic, FA, or LB only, as there is no back-cover option. Because this SKU has no -S magnet, it cannot accept a sensor. If you need sensing, the MBLJ replacement with an -S suffix uses the newer CMSG/DMSG/EMSG switches instead of the legacy CS1-M/DS1-M.
The adjuster is a travel stop, not a lock; it will not hold a load without air.
Upgrade checklist
- ✓ Order the MBLJ20X80-50 (same bore/stroke/adjust)
- ✓ Same 30–80 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 MBLJ20X80-50 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-50 FAQ
Yes, the MALJ20X80-50 is discontinued. The direct replacement is the MBLJ20X80-50, matching the 20 mm bore, 80 mm stroke, 50 mm adjust code, G1/8 port, and force. The MBLJ upgrades the body to a riveted rolling-packed design and uses CMSG/DMSG/EMSG sensors if you order the -S version.
The usable stroke window is 30-80 mm. The adjuster is a travel stop, not a lock, so it will not hold a load without live air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X80-50 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 MALJ20 Adjustable Mini Cylinder MALJ20X80-50 → MBLJ20X80-50)
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