This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X300-75, 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 MALJ20X300-75
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X300-75 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 75 mm, giving a usable end-position window from 225 to 300 mm. This model is discontinued — the direct replacement is the MBLJ20X300-75.
- BoreØ20 mm
- Stroke300 mm
- Adjust window225–300 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X300-75
- 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 MALJ20X300-75
The AirTAC MALJ20X300-75 is a discontinued double-acting mini cylinder with a 20mm bore and 300mm stroke. A 75mm rear adjuster gives a usable end-position window of 225-300mm. The direct replacement is the MBLJ20X300-75, matching the bore, stroke, adjust code, and G1/8 port.
This SKU has no magnet and cannot take a position sensor. The rear adjuster is a travel stop, not a lock; it sets end position but will not hold a load without live air. The fixed rubber bumper softens impact, but long 300mm strokes demand careful rod alignment to prevent side-load bending. Upgrading to the MBLJ20X300-75 replaces threaded covers with a riveted body.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X300-75 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X300-75 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X300-75 |
| Bore size | Ø20 mm |
| Stroke | 300 mm |
| Adjustable window | 225 – 300 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 MBLJ20X300-75 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 MBLJ20X300-75 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X300-75
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×300 | Nominal stroke length in mm. |
| -75 | Adjustable amount: trim the end to a 225–300 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 MALJ20X300-75 Is Used
Filament Winder Gate
Trims the 300mm travel to set the exact payout guide position, ensuring the 132N pull retracts the gate cleanly between fiber wraps.
Thin-Wall Tube Cutter
Adjusts the rear stop to 225mm to prevent the cutter from bottoming out, using the fixed rubber bumper to soften the impact on fragile tubes.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X300-75 with MBLJ20X300-75
To replace this MALJ20X300-75, specify the MBLJ20X300-75. Confirm the 20mm bore, 300mm stroke, 75mm adjust code, G1/8 port, and M8x1.25 rod-end thread. Mounting is FA or LB only; there is no back-cover or SDB option. Because this SKU lacks the -S magnet, it cannot accept a sensor; the MBLJ replacement would use CMSG/DMSG/EMSG switches if you need sensing. Remember the adjuster is a stop, not a lock. At 300mm stroke, prevent rod-bending side-loads.
Upgrade checklist
- ✓ Order the MBLJ20X300-75 (same bore/stroke/adjust)
- ✓ Same 225–300 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 MBLJ20X300-75 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X300-75 FAQ
Yes, the MALJ20X300-75 is discontinued. The direct replacement is the MBLJ20X300-75, which matches the 20mm bore, 300mm stroke, 75mm adjust code, G1/8 port, and force. The MBLJ upgrades the body to a riveted rolling-packed design instead of threaded covers.
The 75mm rear adjuster creates a usable stroke window of 225-300mm. The adjuster is a travel stop, not a lock, and this no-magnet SKU cannot accept a position sensor.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X300-75 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
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