This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X500-20, 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 MALJ20X500-20
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-20 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 480 to 500 mm. This model is discontinued — the direct replacement is the MBLJ20X500-20.
- BoreØ20 mm
- Stroke500 mm
- Adjust window480–500 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X500-20
- 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 MALJ20X500-20
The AirTAC MALJ20X500-20 is a discontinued double-acting mini cylinder with a 20 mm bore and a 500 mm non-standard stroke. The rear stopper trims up to 20 mm, giving a usable 480-500 mm end-position window without external stops. It pushes with 157 N and pulls with 132 N at 0.5 MPa. The direct replacement is the MBLJ20X500-20, matching bore, stroke, port, and force.
This SKU lacks the -S magnet, so it cannot take a position sensor. The 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 MBLJ20X500-20 moves you from threaded covers to a riveted rolling-packed body. Both use a fixed rubber bumper, as the adjustable stroke is not an adjustable cushion.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-20 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-20 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X500-20 |
| Bore size | Ø20 mm |
| Stroke | 500 mm |
| Adjustable window | 480 – 500 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 MBLJ20X500-20 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 MBLJ20X500-20 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-20
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×500 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a 480–500 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 MALJ20X500-20 Is Used
PCB Edge-Belt Diverter
Dials the exact 480-500 mm reach on a conveyor to deflect populated circuit boards without remounting the cylinder block.
Carton Flap Folder
Fine-tunes the folding stroke on a case erector, using the rear stop to compensate for varying cardboard thicknesses.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-20 with MBLJ20X500-20
Replace this MALJ20X500-20 with the exact direct replacement MBLJ20X500-20. Confirm the G1/8 port, M8x1.25 rod thread, PT thread form, and FA/LB mounting (no back cover or SDB). Because this is a no-S SKU, it cannot hold a sensor; upgrading to the MBLJ lets you use CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M. Remember the adjuster is a stop, not a lock.
At 500 mm stroke, the 8 mm rod is highly susceptible to side-load bending; guide the load externally. Because 500 mm exceeds the 300 mm standard, expect a made-to-order lead time.
Upgrade checklist
- ✓ Order the MBLJ20X500-20 (same bore/stroke/adjust)
- ✓ Same 480–500 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 MBLJ20X500-20 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-20 FAQ
Yes, the MALJ20X500-20 is discontinued. The direct replacement is the MBLJ20X500-20, matching the 20 mm bore, 500 mm stroke, 20 mm adjust code, G1/8 port, and FA/LB mounting. The MBLJ upgrades the body to a riveted rolling-packed design and changes the sensor family from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The 500 mm stroke exceeds the 300 mm standard maximum for this bore, making it a non-standard, made-to-order size. The adjuster provides a usable window of 480-500 mm but acts only as a travel stop, not a load lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X500-20 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 MALJ20X500-20 → MBLJ20X500-20)
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