This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X75-40, 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 MALJ20X75-40
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-40 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 40 mm, giving a usable end-position window from 35 to 75 mm. This model is discontinued — the direct replacement is the MBLJ20X75-40.
- BoreØ20 mm
- Stroke75 mm
- Adjust window35–75 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X75-40
- 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 MALJ20X75-40
The AirTAC MALJ20X75-40 is a discontinued double-acting double-rod mini cylinder with a rear adjustable stroke stopper. It features a 20mm bore, 75mm stroke, and a 40mm adjust code, creating a usable end-position window of 35-75mm. The direct replacement is the MBLJ20X75-40, matching the bore, stroke, force, and port.
This SKU has no magnet (-S), 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 original MALJ uses threaded covers and a fixed rubber bumper, while the MBLJ upgrade features a riveted rolling-packed body. If you need position sensing on the replacement, the MBLJ uses CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M family.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-40 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-40 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X75-40 |
| Bore size | Ø20 mm |
| Stroke | 75 mm |
| Adjustable window | 35 – 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 MBLJ20X75-40 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 MBLJ20X75-40 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-40
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×75 | Nominal stroke length in mm. |
| -40 | Adjustable amount: trim the end to a 35–75 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 MALJ20X75-40 Is Used
PCB Depaneling Router Z-Axis
Dials the cutting depth precisely within the 35-75mm window.
Dispensing Valve Seating
Fine-tunes the seating position of a pneumatic dispensing valve. The rear stop sets the exact 35-75mm reach without adding external spacers to the 20mm bore body.
Light Contact Forming
Provides a soft end-position for thin-gauge metal forming. The fixed rubber bumper absorbs the 132N pull impact, while the stopper dials the exact return depth.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-40 with MBLJ20X75-40
To replace the MALJ20X75-40, order the MBLJ20X75-40. Confirm the 20mm bore, 75mm stroke, 40mm adjust code, G1/8 port, PT thread, and FA/LB mounting (no back cover or SDB). Remember the adjuster is a stop, not a lock; add an external lock for held loads. If sizing down for tighter spacing, the 20mm bore is the smallest available, so you would reduce the stroke instead. At 75mm stroke, keep side-load in check to avoid rod bending.
Upgrade checklist
- ✓ Order the MBLJ20X75-40 (same bore/stroke/adjust)
- ✓ Same 35–75 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 MBLJ20X75-40 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-40 FAQ
Yes, the MALJ20X75-40 is discontinued. The direct replacement is the MBLJ20X75-40, which matches the 20mm bore, 75mm stroke, 40mm adjust code, and G1/8 port. The MBLJ upgrades the body to a riveted rolling-packed design instead of threaded covers, but retains the same force ratings.
The 40mm adjust code allows you to trim the rear position by up to 40mm, creating a usable stroke window of 35-75mm. This SKU has no magnet, so it cannot accept a position sensor.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X75-40 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 MALJ20X75-40 → MBLJ20X75-40)
Tell us the quantity and destination — we quote the direct MBLJ20X75-40 replacement with price, stock and lead time, usually within 7-8 hours.