This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X350-40, 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 MALJ20X350-40
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-40 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 310 to 350 mm. This model is discontinued — the direct replacement is the MBLJ20X350-40.
- BoreØ20 mm
- Stroke350 mm
- Adjust window310–350 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X350-40
- 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 MALJ20X350-40
The AirTAC MALJ20X350-40 is a discontinued double-acting, double-rod adjustable-stroke mini cylinder. It has a 20mm bore, a non-standard 350mm stroke, and a 40mm rear adjuster giving a usable end-position window of 310-350mm. The direct replacement is the MBLJ20X350-40, matching bore, stroke, force, G1/8 port, and mounting.
This unit uses a fixed rubber bumper, not an adjustable air cushion. The rear adjuster is a travel stop to fine-tune reach without external hardware; it does not hold load without live air. This no-magnet SKU cannot take a position sensor. Upgrade facts: the MALJ has threaded covers and a carbon-steel rod with 20um hard chrome, while the MBLJ replacement uses a riveted rolling-packed body. The 350mm stroke exceeds the 300mm standard, making it a made-to-order item requiring careful side-load management to prevent rod bending.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-40 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-40 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X350-40 |
| Bore size | Ø20 mm |
| Stroke | 350 mm |
| Adjustable window | 310 – 350 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 MBLJ20X350-40 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 MBLJ20X350-40 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-40
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×350 | Nominal stroke length in mm. |
| -40 | Adjustable amount: trim the end to a 310–350 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 MALJ20X350-40 Is Used
PCB Depaneling Router
Dials the cutting head reach across a 310-350mm window.
Dispenser Head Calibration
Fine-tunes the nozzle depth on a 350mm travel slide. The rear stop sets the exact end position without bolting external physical stops.
Thin-Wall Tube Notching
Feeds a fragile brass tube to a cutter. The 132N pull retracts the part safely, while the fixed rubber bumper softens the impact at cycle end.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-40 with MBLJ20X350-40
To replace this MALJ20X350-40, order the MBLJ20X350-40. Confirm the 20mm bore, 350mm non-standard stroke, 40mm adjust code, G1/8 port, PT thread, and FA/LB mounting (no back-cover or SDB allowed). Because this SKU lacks the -S magnet, it cannot take a sensor; the MBLJ upgrade uses CMSG/DMSG/EMSG switches if you need position sensing. The adjuster is a stop, not a lock. At 350mm, prevent rod bending by guiding the load.
Upgrade checklist
- ✓ Order the MBLJ20X350-40 (same bore/stroke/adjust)
- ✓ Same 310–350 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 MBLJ20X350-40 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-40 FAQ
Yes, the MALJ20X350-40 is discontinued. The direct replacement is the MBLJ20X350-40, matching the 20mm bore, 350mm stroke, 40mm adjuster, force, G1/8 port, and mounting. The MBLJ upgrades the body to a riveted rolling-packed design from the older threaded covers.
The 40mm adjuster creates a usable stroke window of 310-350mm. It has a G1/8 port, an 8mm rod, and a fixed rubber bumper. This no-magnet SKU cannot take a position sensor.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X350-40 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 MALJ20X350-40 → MBLJ20X350-40)
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