This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X80-40S, 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 MALJ20X80-40-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-40-S 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 40 to 80 mm. This model is discontinued — the direct replacement is the MBLJ20X80-40-S.
- BoreØ20 mm
- Stroke80 mm
- Adjust window40–80 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X80-40-S
- 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 MALJ20X80-40-S
The AirTAC MALJ20X80-40-S is a discontinued adjustable-stroke mini cylinder. The direct replacement is the MBLJ20X80-40-S, matching the 20mm bore, 80mm stroke, G1/8 port, and 40mm adjust code.
The 40mm adjuster lets you trim the rear position, creating a usable 40-80mm stroke window without external stops. This adjuster acts as a travel stop, not a lock, so it will not hold a load without live air. The fixed rubber bumper softens end impact. Upgrading to the MBLJ brings a riveted rolling-packed body instead of threaded covers, and the -S magnet switches from CS1-M/DS1-M to CMSG/DMSG/EMSG sensors.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-40-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-40-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X80-40-S |
| Bore size | Ø20 mm |
| Stroke | 80 mm |
| Adjustable window | 40 – 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 MBLJ20X80-40-S 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 MBLJ20X80-40-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-40-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×80 | Nominal stroke length in mm. |
| -40 | Adjustable amount: trim the end to a 40–80 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 MALJ20X80-40-S Is Used
Dispenser Head Depth
Fine-tune the retraction window for a pick-and-place dispenser head, adjusting the stopper to vary nozzle lift without swapping physical spacers.
Carton Flap Folding
Set the exact 60mm reach needed to fold light carton flaps on a packaging line, relying on the fixed rubber bumper to soften the repeated end impact.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-40-S with MBLJ20X80-40-S
To replace the MALJ20X80-40-S, order the direct replacement MBLJ20X80-40-S. Confirm the 20mm bore, 80mm stroke, 40mm adjust code, G1/8 port, and PT thread. Mounting is FA or LB only; there is no back cover or SDB option. Remember the adjuster is a stop, not a lock. Because the stroke is under 300mm, rod side-load bending is minimal. Note the -S magnet requires CMSG/DMSG/EMSG switches on the new MBLJ body.
Upgrade checklist
- ✓ Order the MBLJ20X80-40-S (same bore/stroke/adjust)
- ✓ Same 40–80 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 MBLJ20X80-40-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-40-S FAQ
Yes, the MALJ20X80-40-S is discontinued. The direct replacement is the MBLJ20X80-40-S, which matches the 20mm bore, 80mm stroke, 40mm adjust code, and G1/8 port. The MBLJ upgrades you to a riveted body and CMSG/DMSG/EMSG sensors instead of the older CS1-M/DS1-M.
The 40mm adjuster creates a usable stroke window of 40-80mm. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X80-40-S 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 MALJ20X80-40-S → MBLJ20X80-40-S)
Tell us the quantity and destination — we quote the direct MBLJ20X80-40-S replacement with price, stock and lead time, usually within 7-8 hours.