This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X90-40, 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 MALJ20X90-40
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X90-40 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 50 to 90 mm. This model is discontinued — the direct replacement is the MBLJ20X90-40.
- BoreØ20 mm
- Stroke90 mm
- Adjust window50–90 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X90-40
- 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 MALJ20X90-40
The AirTAC MALJ20X90-40 is a discontinued double-acting, double-rod mini cylinder with a 20 mm bore and a 90 mm stroke. It features a rear travel stopper that lets you trim up to 40 mm, creating a usable extension window of 50-90 mm. The direct replacement is the MBLJ20X90-40, matching the bore, stroke, adjust code, G1/8 port, and mounting.
This SKU has no magnet and cannot accept a position sensor. The adjuster sets the end position but does not hold load without live air. It uses a fixed rubber bumper, not an adjustable cushion. The original MALJ has threaded covers and uses a carbon-steel rod with a 20 um hard chrome layer for wear resistance. Upgrading to the MBLJ20X90-40 shifts you to a riveted rolling-packed body; if you need sensors later, the MBLJ uses CMSG/DMSG/EMSG switches.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X90-40 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X90-40 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X90-40 |
| Bore size | Ø20 mm |
| Stroke | 90 mm |
| Adjustable window | 50 – 90 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 MBLJ20X90-40 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 MBLJ20X90-40 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X90-40
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×90 | Nominal stroke length in mm. |
| -40 | Adjustable amount: trim the end to a 50–90 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 MALJ20X90-40 Is Used
Aluminum Extrusion Notching
Trims the cutter retract position on the fly for various profile lengths, relying on the 50-90 mm adjustable window for exact depth control.
Small Part Ejector Gate
Sets the flap open distance on a sorting chute to prevent parts from overshooting, fine-tuning reach without adding external spacers.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X90-40 with MBLJ20X90-40
To replace the MALJ20X90-40, order the MBLJ20X90-40. Confirm your 20 mm bore, 90 mm stroke, 40 mm adjust code, PT G1/8 port, and FA or LB mounting (there is no back cover or SDB option). Remember the rear adjuster is a travel stop, not a lock.
Upgrade checklist
- ✓ Order the MBLJ20X90-40 (same bore/stroke/adjust)
- ✓ Same 50–90 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 MBLJ20X90-40 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X90-40 FAQ
Yes, the MALJ20X90-40 is discontinued. The direct replacement is the MBLJ20X90-40, which matches the 20 mm bore, 90 mm stroke, 40 mm adjust code, G1/8 port, and force. The MBLJ upgrades the body to a riveted rolling-packed design from the original threaded covers.
The 40 mm adjust code lets you trim the 90 mm stroke, giving a usable window of 50-90 mm. This SKU has no magnet, so it cannot take a sensor.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X90-40 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 MALJ20X90-40 → MBLJ20X90-40)
Tell us the quantity and destination — we quote the direct MBLJ20X90-40 replacement with price, stock and lead time, usually within 7-8 hours.