This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X75-30, 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 MALJ20X75-30
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-30 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 45 to 75 mm. This model is discontinued — the direct replacement is the MBLJ20X75-30.
- BoreØ20 mm
- Stroke75 mm
- Adjust window45–75 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X75-30
- 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 MALJ20X75-30
The AirTAC MALJ20X75-30 is a discontinued adjustable-stroke mini cylinder. The direct replacement is the MBLJ20X75-30, matching the 20mm bore, 75mm stroke, and porting. This double-acting double-rod unit has a 30mm rear adjuster, creating a usable end-position window of 45-75mm. The adjuster sets travel but is a stop, not a lock; it will not hold a load without live air.
This SKU lacks a magnet (-S), so it cannot take a position sensor. It uses a fixed rubber bumper, not an adjustable air cushion. Upgrading to the MBLJ changes the sensor family (CS1-M/DS1-M to CMSG/DMSG/EMSG if magnetized) and swaps threaded covers for a riveted rolling-packed body, but ratings remain identical.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-30 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-30 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X75-30 |
| Bore size | Ø20 mm |
| Stroke | 75 mm |
| Adjustable window | 45 – 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 MBLJ20X75-30 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 MBLJ20X75-30 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-30
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×75 | Nominal stroke length in mm. |
| -30 | Adjustable amount: trim the end to a 45–75 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 MALJ20X75-30 Is Used
PCB Drill Depth Stop
Dial in a 45-75mm reach on a PCB drilling fixture.
Wire Harness Clamp
Grip varying wire bundle diameters in an assembly jig. The adjustable window lets you alter the clamp end-point per harness batch, using the 132N pull to release parts reliably.
Dispenser Nozzle Height
Set precise nozzle lowering distances for adhesive dispensing. The rear stopper tunes the 75mm stroke down to 45mm for different pot heights, preventing over-travel without complex brackets.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-30 with MBLJ20X75-30
To replace the MALJ20X75-30, use the MBLJ20X75-30 as a direct fit: keep the 20mm bore, 75mm stroke, 30mm adjust code, G1/8 port, and FA/LB mounting (no back cover or SDB allowed). Because this SKU has no -S magnet, it cannot accept a CS1-M/DS1-M sensor; the MBLJ upgrade would require CMSG/DMSG/EMSG switches if you add an -S version. Remember the adjuster is a travel stop, not a lock.
For sizing, stepping down uses the next available bore (none smaller in this mini series, so 20mm is the floor). This 75mm stroke is well within the 300mm max for bore 20, so rod bending is minimal, but always guide the load to prevent side-load wear on the 8mm rod.
Upgrade checklist
- ✓ Order the MBLJ20X75-30 (same bore/stroke/adjust)
- ✓ Same 45–75 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 MBLJ20X75-30 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-30 FAQ
Yes, the MALJ20X75-30 is discontinued. The direct replacement is the MBLJ20X75-30, matching the 20mm bore, 75mm stroke, 30mm adjust code, and G1/8 port. The MBLJ upgrades the body to a riveted rolling-packed design but keeps the same force ratings.
The 30mm adjuster is a travel stop that shortens the stroke, giving a usable window of 45-75mm. It does not hold the load without air pressure and uses a fixed rubber bumper, not an adjustable cushion.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X75-30 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 MALJ20X75-30 → MBLJ20X75-30)
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