This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X80-30, 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 MALJ20X80-30
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-30 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 30 mm, giving a usable end-position window from 50 to 80 mm. This model is discontinued — the direct replacement is the MBLJ20X80-30.
- BoreØ20 mm
- Stroke80 mm
- Adjust window50–80 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X80-30
- 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 MALJ20X80-30
The AirTAC MALJ20X80-30 is a discontinued double-acting, double-rod mini cylinder with a 20mm bore and 80mm stroke. Its rear adjuster trims up to 30mm, yielding a usable stroke window of 50-80mm. The direct replacement is the MBLJ20X80-30, matching bore, stroke, force, G1/8 port, and mounting.
This SKU lacks a magnet (-S) and cannot accept a position sensor. The adjuster sets end position but is a travel stop, not a lock, so it will not hold a load without live air. Unlike the threaded covers on this MALJ, the MBLJ replacement uses a riveted rolling-packed body. Impact is softened by a fixed rubber bumper, meaning there is no adjustable air cushion.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-30 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-30 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X80-30 |
| Bore size | Ø20 mm |
| Stroke | 80 mm |
| Adjustable window | 50 – 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 MBLJ20X80-30 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 MBLJ20X80-30 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-30
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×80 | Nominal stroke length in mm. |
| -30 | Adjustable amount: trim the end to a 50–80 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 MALJ20X80-30 Is Used
PCB Depaneling Saw
Dials the blade contact depth from 50 to 80mm, using the 132N pull force to safely retract the cutter without stressing fragile boards.
Small Parts Ejector
Adjusts the kick-out stroke on a vibratory bowl output lane to prevent parts from flying, using the fixed rubber bumper to soften impact.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-30 with MBLJ20X80-30
To replace the MALJ20X80-30 with the MBLJ20X80-30, verify the 20mm bore, 80mm stroke, 30mm adjust code, G1/8 port, and PT thread. Mounting is FA or LB only; there is no back-cover or SDB option. Because this SKU lacks the -S magnet, it uses no sensor; upgrading to the MBLJ allows fitting CMSG/DMSG/EMSG switches if needed. The rear adjuster is a travel stop, not a lock.
At 80mm stroke, rod side-load is minimal, but ensure guide alignment to prevent seal wear.
Upgrade checklist
- ✓ Order the MBLJ20X80-30 (same bore/stroke/adjust)
- ✓ Same 50–80 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 MBLJ20X80-30 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-30 FAQ
Yes, the MALJ20X80-30 is discontinued. The direct replacement is the MBLJ20X80-30, which matches the 20mm bore, 80mm stroke, 30mm adjuster, G1/8 port, and mounting. The MBLJ upgrades the body to a riveted rolling-packed design and uses CMSG/DMSG/EMSG sensors if a magnet is added.
The usable stroke window is 50-80mm (80mm base stroke minus the 30mm adjuster). The maximum force is 32kgf at 1.0MPa. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X80-30 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 MALJ20X80-30 → MBLJ20X80-30)
Tell us the quantity and destination — we quote the direct MBLJ20X80-30 replacement with price, stock and lead time, usually within 7-8 hours.