This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X75-20S, 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 MALJ20X75-20-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-20-S 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 55 to 75 mm. This model is discontinued — the direct replacement is the MBLJ20X75-20-S.
- BoreØ20 mm
- Stroke75 mm
- Adjust window55–75 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X75-20-S
- 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 MALJ20X75-20-S
The AirTAC MALJ20X75-20-S is a discontinued double-acting, double-rod mini cylinder with a 20 mm bore, 75 mm stroke, and a 20 mm rear adjuster. This gives a usable travel window of 55-75 mm. The direct replacement is the MBLJ20X75-20-S, which matches the bore, stroke, force, and G1/8 port.
This -S SKU includes a magnet for CS1-M or DS1-M switches; the MBLJ upgrade switches to CMSG, DMSG, or EMSG sensors. The MALJ uses threaded covers, while the MBLJ features a riveted rolling-packed body. The rear adjuster is a travel stop, not a lock; it cannot hold a load without live air. End impact is absorbed by a fixed rubber bumper, not an adjustable cushion.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-20-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-20-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X75-20-S |
| Bore size | Ø20 mm |
| Stroke | 75 mm |
| Adjustable window | 55 – 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 MBLJ20X75-20-S 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 MBLJ20X75-20-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-20-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×75 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a 55–75 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 MALJ20X75-20-S Is Used
PCB Router Z-Axis Stop
Dial the 55-75 mm window to set exact routing depth on a desktop PCB milling spindle without swapping physical spacers.
Label Applicator Tamp
Adjust the tamp stroke down from 75 mm to pick and place labels precisely onto small cartons, compensating for box height variations.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-20-S with MBLJ20X75-20-S
To replace the MALJ20X75-20-S, order the MBLJ20X75-20-S. Confirm the 20 mm bore, 75 mm stroke, 20 mm adjust code, G1/8 port, and FA or LB mounting (no back cover or SDB). The -S magnet means you must change your sensors from CS1-M/DS1-M to CMSG/DMSG/EMSG. The adjuster sets end position but does not hold load without air.
At a 75 mm stroke, prevent rod bending by ensuring rigid guidance and avoiding side loads.
Upgrade checklist
- ✓ Order the MBLJ20X75-20-S (same bore/stroke/adjust)
- ✓ Same 55–75 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 MBLJ20X75-20-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-20-S FAQ
Yes, the MALJ20X75-20-S is discontinued. The direct replacement is the MBLJ20X75-20-S, which keeps the 20 mm bore, 75 mm stroke, 20 mm adjuster, and G1/8 port. You only need to update your sensors from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The 20 mm adjuster lets you trim the rear end position, creating a 55-75 mm usable stroke window. It acts as a travel stop, not a lock, and cannot hold a load without live air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X75-20-S 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 MALJ20X75-20-S → MBLJ20X75-20-S)
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