This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X50-50, 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 MALJ20X50-50
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X50-50 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 0 to 50 mm. This model is discontinued — the direct replacement is the MBLJ20X50-50.
- BoreØ20 mm
- Stroke50 mm
- Adjust window0–50 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X50-50
- 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 MALJ20X50-50
The AirTAC MALJ20X50-50 is a discontinued double-acting, double-rod mini cylinder with a 50mm rear adjustable stroke stopper. Its usable end-position window is 0-50mm, letting you dial in exact reach without external stops. The direct replacement is the MBLJ20X50-50, matching the 20mm bore, 50mm stroke, G1/8 port, and mounting.
This SKU has no -S magnet, 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 fixed rubber bumper softens end impact, and the original threaded covers are upgraded to a riveted rolling-packed body on the MBLJ20X50-50.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X50-50 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X50-50 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X50-50 |
| Bore size | Ø20 mm |
| Stroke | 50 mm |
| Adjustable window | 0 – 50 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 MBLJ20X50-50 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 MBLJ20X50-50 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X50-50
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×50 | Nominal stroke length in mm. |
| -50 | Adjustable amount: trim the end to a 0–50 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 MALJ20X50-50 Is Used
Dispenser Valve Height
Fine-tune the drop height of a pneumatic adhesive dispenser, adjusting the 50mm rear stopper to accommodate different syringe tips without remounting the cylinder.
Small Part Pick-and-Place
Control the extend position on a compact pick-and-place gantry for electronic connectors, using the 132N pull force to retract the 8mm rod reliably within tight machine clearances.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X50-50 with MBLJ20X50-50
To replace the MALJ20X50-50, specify the MBLJ20X50-50 to keep the 20mm bore, 50mm stroke, 50mm adjuster code, G1/8 port, and FA/LB mounting. There is no back-cover or SDB code. Since this SKU lacks a -S magnet, it cannot accept a sensor; if you need sensing, the MBLJ20X50-50S uses the newer CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M. Remember the adjuster is a stop, not a lock.
Stepping down is not possible as 20mm is the smallest MALJ size.
Upgrade checklist
- ✓ Order the MBLJ20X50-50 (same bore/stroke/adjust)
- ✓ Same 0–50 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 MBLJ20X50-50 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X50-50 FAQ
Yes, the MALJ20X50-50 is discontinued. The direct replacement is the MBLJ20X50-50, which matches the 20mm bore, 50mm stroke, 50mm adjust code, G1/8 port, and FA/LB mounting. The MBLJ upgrades the threaded covers to a riveted rolling-packed body.
The 50mm adjuster code lets you trim the rear travel stopper, creating a usable stroke window from 0 to 50mm. The adjuster is a travel stop, not a lock; it will not hold a load without live air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X50-50 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 MALJ20X50-50 → MBLJ20X50-50)
Tell us the quantity and destination — we quote the direct MBLJ20X50-50 replacement with price, stock and lead time, usually within 7-8 hours.