This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X70-20, 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 MALJ20X70-20
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X70-20 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 50 to 70 mm. This model is discontinued — the direct replacement is the MBLJ20X70-20.
- BoreØ20 mm
- Stroke70 mm
- Adjust window50–70 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X70-20
- 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 MALJ20X70-20
The AirTAC MALJ20X70-20 is a discontinued double-acting, double-rod mini cylinder with a rear adjustable stroke stopper. It has a 20mm bore, 70mm stroke, and a 20mm adjuster, giving a usable end-position window of 50-70mm. The direct replacement is the MBLJ20X70-20, matching the bore, stroke, port, and mounting.
This SKU lacks the -S magnet, so it cannot accept 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. Upgrading to the MBLJ20X70-20 changes the construction from threaded covers to a riveted rolling-packed body, and if a sensor is needed later, the MBLJ uses CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M family.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X70-20 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X70-20 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X70-20 |
| Bore size | Ø20 mm |
| Stroke | 70 mm |
| Adjustable window | 50 – 70 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 MBLJ20X70-20 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 MBLJ20X70-20 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X70-20
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×70 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a 50–70 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 MALJ20X70-20 Is Used
Dispenser Valve Seating
Fine-tune the rear stopper to seat a pneumatic glue dispenser valve accurately, preventing over-travel that would damage the nozzle tip on hardened substrates.
Wire Straightener Feed
Trim the extend position to synchronize a wire straightener's feed stroke, ensuring the 132N pull force retracts the guide roller cleanly before the next cut cycle.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X70-20 with MBLJ20X70-20
To replace the MALJ20X70-20, specify the MBLJ20X70-20 to keep the 20mm bore, 70mm stroke, 20mm adjust code, G1/8 port, and FA/LB mounting (no back cover or SDB). Because this SKU has no -S magnet, it cannot take a sensor; the MBLJ upgrade requires CMSG/DMSG/EMSG switches if you add one. The adjuster remains a travel stop, not a load lock.
Upgrade checklist
- ✓ Order the MBLJ20X70-20 (same bore/stroke/adjust)
- ✓ Same 50–70 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 MBLJ20X70-20 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X70-20 FAQ
Yes, the MALJ20X70-20 is discontinued. The direct replacement is the MBLJ20X70-20, which matches the 20mm bore, 70mm stroke, 20mm adjust code, G1/8 port, and FA/LB mounting. The MBLJ upgrades the body to a riveted rolling-packed design and uses CMSG/DMSG/EMSG sensors if needed.
The 70mm stroke with a 20mm adjuster creates a usable stroke window of 50-70mm. The fixed rubber bumper softens impact, but the adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X70-20 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 MALJ20X70-20 → MBLJ20X70-20)
Tell us the quantity and destination — we quote the direct MBLJ20X70-20 replacement with price, stock and lead time, usually within 7-8 hours.