This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X450-100-S, 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 MALJ20X450-100-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X450-100-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 100 mm, giving a usable end-position window from 350 to 450 mm. This model is discontinued — the direct replacement is the MBLJ20X450-100-S.
- BoreØ20 mm
- Stroke450 mm
- Adjust window350–450 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X450-100-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 MALJ20X450-100-S
The AirTAC MALJ20X450-100-S is a discontinued double-acting, double-rod mini cylinder with a rear adjustable stroke stopper. It features a 20mm bore, a 450mm non-standard made-to-order stroke, and a 100mm adjust code, providing a usable end-position window of 350-450mm. The direct replacement is the MBLJ20X450-100-S, matching the bore, stroke, force, and mounting.
The rear adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. This unit uses a fixed rubber bumper and has threaded covers, whereas the MBLJ replacement features a riveted rolling-packed body. The -S magnet on this MALJ works with CS1-M / DS1-M switches, while the MBLJ upgrade uses CMSG / DMSG / EMSG sensors. Mounting is FA or LB only, with no back-cover or SDB options.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X450-100-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X450-100-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X450-100-S |
| Bore size | Ø20 mm |
| Stroke | 450 mm |
| Adjustable window | 350 – 450 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 MBLJ20X450-100-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 MBLJ20X450-100-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X450-100-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×450 | Nominal stroke length in mm. |
| -100 | Adjustable amount: trim the end to a 350–450 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 MALJ20X450-100-S Is Used
PCB Router Z-Axis Depth
Dial the end position to set routing depth on a PCB depaneling router; the 350-450mm window allows precise reach tuning without adding external spacers.
Film Edge Guide
Adjusts the retract position on a packaging film edge-guide arm, letting operators fine-tune tensioning reach without swapping the cylinder body.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X450-100-S with MBLJ20X450-100-S
To replace the MALJ20X450-100-S, order the exact direct replacement MBLJ20X450-100-S. Confirm the 20mm bore, 450mm stroke, 100mm adjust code, G1/8 port, M8x1.25 thread, and FA/LB mounting. The -S magnet requires a sensor family change from CS1-M / DS1-M to CMSG / DMSG / EMSG. Remember the adjuster is a travel stop, not a lock, so add an external lock for held loads.
Because the 450mm stroke exceeds the 300mm standard maximum, it is a non-standard made-to-order part; on long strokes like this, minimize side-load to prevent rod bending and premature seal wear.
Upgrade checklist
- ✓ Order the MBLJ20X450-100-S (same bore/stroke/adjust)
- ✓ Same 350–450 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 MBLJ20X450-100-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X450-100-S FAQ
Yes, the MALJ20X450-100-S is discontinued. The direct replacement is the MBLJ20X450-100-S, matching the 20mm bore, 450mm stroke, 100mm adjust code, and force. You only change the sensor family from CS1-M / DS1-M to CMSG / DMSG / EMSG.
The usable adjustable window is 350-450mm (450mm stroke minus the 100mm adjust code).
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X450-100-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 MALJ20X450-100-S → MBLJ20X450-100-S)
Tell us the quantity and destination — we quote the direct MBLJ20X450-100-S replacement with price, stock and lead time, usually within 7-8 hours.