This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X75-50, 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 MALJ20X75-50
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-50 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 25 to 75 mm. This model is discontinued — the direct replacement is the MBLJ20X75-50.
- BoreØ20 mm
- Stroke75 mm
- Adjust window25–75 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X75-50
- 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 MALJ20X75-50
The AirTAC MALJ20X75-50 is a discontinued double-acting mini cylinder with a 50mm rear adjuster, yielding a usable stroke window of 25-75mm. The direct replacement is the MBLJ20X75-50, matching the 20mm bore, 75mm stroke, G1/8 port, and force.
This 20mm bore uses an 8mm rod and M8x1.25 rod-end thread. It has a fixed rubber bumper, not an adjustable cushion. The rear adjuster sets the end position but does not hold load without live air. This no-magnet SKU cannot take a sensor. The original threaded covers upgrade to a riveted body on the MBLJ.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-50 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-50 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X75-50 |
| Bore size | Ø20 mm |
| Stroke | 75 mm |
| Adjustable window | 25 – 75 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 MBLJ20X75-50 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 MBLJ20X75-50 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-50
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×75 | Nominal stroke length in mm. |
| -50 | Adjustable amount: trim the end to a 25–75 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 MALJ20X75-50 Is Used
Label Applicator Tamp Head
Fine-tune the tamp reach to apply labels precisely to varying box heights, leveraging the compact 20mm bore to fit within tight conveyor side-guides.
Pneumatic Pick-and-Place Z-Axis
Adjust the end position to prevent the 8mm rod from bottoming out when picking delicate electronic chips, ensuring the rubber bumper absorbs residual impact.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-50 with MBLJ20X75-50
To replace the MALJ20X75-50, order the MBLJ20X75-50. Confirm your 20mm bore, 75mm stroke, 50mm adjust code, G1/8 port, and FA/LB mounting (no back cover or SDB). The adjuster is a travel stop, not a lock. Since this SKU lacks the -S magnet, it cannot take a position sensor; if you need sensing, the MBLJ-S uses CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M.
If you need less force, no smaller standard MALJ bore exists. For strokes at or above 300mm, watch rod-bending side loads; this 75mm stroke is safe.
Upgrade checklist
- ✓ Order the MBLJ20X75-50 (same bore/stroke/adjust)
- ✓ Same 25–75 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 MBLJ20X75-50 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-50 FAQ
Yes, the MALJ20X75-50 is discontinued. The direct replacement is the MBLJ20X75-50, which matches the 20mm bore, 75mm stroke, 50mm adjust code, G1/8 port, and mounting. The MBLJ upgrades the threaded covers to a riveted rolling-packed body.
The 50mm adjust code lets you trim the rear position, creating a usable stroke window of 25-75mm. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X75-50 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 MALJ20X75-50 → MBLJ20X75-50)
Tell us the quantity and destination — we quote the direct MBLJ20X75-50 replacement with price, stock and lead time, usually within 7-8 hours.