This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X75-20LB, 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 MALJ20X75-20LB
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-20LB 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 MBLJ20X75-20LB.
- BoreØ20 mm
- Stroke75 mm
- Adjust window55–75 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X75-20LB
- 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 MALJ20X75-20LB
The AirTAC MALJ20X75-20LB is a discontinued double-acting mini cylinder with a 20 mm bore, 75 mm stroke, and an LB foot mount. The -20 adjust code lets you trim the rear end position by up to 20 mm, creating a usable stroke window of 55-75 mm. The direct replacement is the MBLJ20X75-20LB, which matches the bore, stroke, adjust code, G1/8 port, and LB mounting.
This SKU has no -S magnet, so it cannot accept a position sensor. The rear adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. The cylinder uses a fixed rubber bumper, not an adjustable air cushion. During the upgrade to MBLJ, note the construction shifts from threaded covers to a riveted rolling-packed body. If your fixture needs a sensor, you must step up to an -S SKU (which uses CS1-M/DS1-M switches on the MALJ, or CMSG/DMSG/EMSG on the MBLJ).
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-20LB Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-20LB |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X75-20LB |
| 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 MBLJ20X75-20LB 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 MBLJ20X75-20LB matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-20LB
| 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 MALJ20X75-20LB Is Used
PCB Edge Routing Stop
Dials the cutting head reach on a PCB depaneling router.
Dispenser Nozzle Height
Sets the exact z-axis dip height for an adhesive dispensing nozzle. The 20 mm rear stopper lets operators fine-tune the 75 mm stroke to prevent splay on uneven substrates.
Lightweight Parts Ejector
Pushes small plastic moulded parts out of a die using the LB foot mount. The fixed rubber bumper absorbs the end-of-stroke impact without requiring external shock absorbers.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-20LB with MBLJ20X75-20LB
To replace the MALJ20X75-20LB with the MBLJ20X75-20LB, confirm the 20 mm bore, 75 mm stroke, 20 mm adjust code, PT G1/8 port, and LB foot mount. No back-cover or SDB code applies. Because this specific SKU lacks the -S magnet, it cannot support a position sensor. If you need to size either direction, stepping down is not an option as 20 mm is the smallest MALJ bore. Remember the rear adjuster is a stop, not a lock, so an external holding mechanism is required for any load-holding application.
Upgrade checklist
- ✓ Order the MBLJ20X75-20LB (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 MBLJ20X75-20LB instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-20LB FAQ
Yes, the MALJ20X75-20LB is discontinued. The direct replacement is the MBLJ20X75-20LB, matching the 20 mm bore, 75 mm stroke, 20 mm adjust code, G1/8 port, and LB mount. The MBLJ upgrades the body to a riveted rolling-packed design from the original threaded covers.
The -20 adjust code lets you trim the rear position by up to 20 mm, creating a usable stroke window of 55-75 mm. This adjuster acts only as a travel stop and does not hold the load without air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X75-20LB 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 MALJ20X75-20LB → MBLJ20X75-20LB)
Tell us the quantity and destination — we quote the direct MBLJ20X75-20LB replacement with price, stock and lead time, usually within 7-8 hours.