This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X300-75S, 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-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X300-75-S 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-S.
- BoreØ20 mm
- Stroke300 mm
- Adjust window225–300 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X300-75-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 MALJ20X300-75-S
The AirTAC MALJ20X300-75-S is a discontinued double-acting mini cylinder with a rear travel stopper. The -75 adjust code lets you trim up to 75 mm at the rear, creating a usable stroke window of 225-300 mm.
The direct replacement is the MBLJ20X300-75-S. The MBLJ retains the same 20 mm bore, 300 mm stroke, G1/8 port, and -75 adjust code, but upgrades the body to a riveted rolling-packed design instead of the MALJ threaded covers. Your -S magnet also transitions from the older CS1-M / DS1-M switches to the modern CMSG / DMSG / EMSG family.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X300-75-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X300-75-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X300-75-S |
| 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-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 MBLJ20X300-75-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X300-75-S
| 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-S Is Used
PCB Depaneling Router
Dial in the 225-300 mm reach to press a depaneling router bit precisely onto composite boards without remounting the cylinder.
Dispenser Valve Depth Stop
Adjust the rear stopper by up to 75 mm to set the exact 225 mm retraction point for an adhesive dispensing nozzle over varying product heights.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X300-75-S with MBLJ20X300-75-S
To replace this MALJ20X300-75-S with the MBLJ20X300-75-S, confirm the 20 mm bore, 300 mm stroke, -75 adjust code, G1/8 port, and M8x1.25 rod-end thread. Mounting remains Basic, FA, or LB only, as neither series uses a back cover or SDB. Remember the adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air.
Because this 300 mm stroke is at the maximum standard limit for a 20 mm bore, prevent rod bending by ensuring strict alignment and avoiding side loads.
Upgrade checklist
- ✓ Order the MBLJ20X300-75-S (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-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X300-75-S FAQ
Yes, the MALJ20X300-75-S is discontinued. The direct replacement is the MBLJ20X300-75-S, which keeps the same bore, stroke, adjust code, and G1/8 port. The MBLJ upgrades the body to a riveted rolling-packed design and changes the -S magnet switches from CS1-M / DS1-M to CMSG / DMSG / EMSG.
The -75 adjust code lets you trim up to 75 mm at the rear, creating a usable stroke window of 225-300 mm. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X300-75-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 MALJ20X300-75-S → MBLJ20X300-75-S)
Tell us the quantity and destination — we quote the direct MBLJ20X300-75-S replacement with price, stock and lead time, usually within 7-8 hours.