This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X350-20, 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 MALJ20X350-20
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-20 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 20 mm, giving a usable end-position window from 330 to 350 mm. This model is discontinued — the direct replacement is the MBLJ20X350-20.
- BoreØ20 mm
- Stroke350 mm
- Adjust window330–350 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X350-20
- 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 MALJ20X350-20
The AirTAC MALJ20X350-20 is a discontinued double-acting double-rod mini cylinder featuring a 20mm bore and a 350mm stroke. Because this is a non-standard made-to-order stroke exceeding the 300mm standard maximum, it provides an extended reach. The rear adjuster allows you to trim up to 20mm, creating a usable stroke window of 330-350mm so you can dial in the exact end position without external stops.
The direct replacement is the MBLJ20X350-20, matching the bore, stroke, adjust code, and G1/8 port. This SKU lacks a magnet (-S), so it cannot accept a position sensor. Two critical upgrade facts: the MALJ uses threaded covers while the MBLJ uses a riveted rolling-packed body, and if you ever need a sensor on the new unit, you must migrate from the older CS1-M/DS1-M switches to the CMSG/DMSG/EMSG family. Note that the adjuster is a travel stop, not a lock; it cannot hold a load without live air.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-20 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-20 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X350-20 |
| Bore size | Ø20 mm |
| Stroke | 350 mm |
| Adjustable window | 330 – 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 MBLJ20X350-20 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 MBLJ20X350-20 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-20
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×350 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a 330–350 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 MALJ20X350-20 Is Used
Conveyor transfer gate
Adjusts the 330-350mm stroke window by 20mm at the rear to fine-tune the resting position of a diverter arm without machining new hard stops.
Film roll core loader
Extends to feed an empty cardboard core into a winding spindle, using the fixed rubber bumper to cushion the end-of-stroke impact in a packaging line.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-20 with MBLJ20X350-20
To replace this MALJ20X350-20, order the MBLJ20X350-20. Confirm the 20mm bore, 350mm stroke, 20mm adjust code, G1/8 port, PT thread, and FA/LB mounting (there is no back cover or SDB option). Since this is a non-standard 350mm stroke on a 20mm bore, be aware of rod-bending risks: a long 8mm rod under side-load will deflect, so guide the load carefully and ensure the adjuster stop is not used to absorb heavy kinetic energy. The fixed rubber bumper softens end impact but is not an adjustable cushion.
For sizing, if you need less force you can step down, though 20mm is the smallest MALJ bore available.
Upgrade checklist
- ✓ Order the MBLJ20X350-20 (same bore/stroke/adjust)
- ✓ Same 330–350 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 MBLJ20X350-20 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-20 FAQ
Yes, the MALJ20X350-20 is discontinued. The direct replacement is the MBLJ20X350-20, which matches the 20mm bore, 350mm stroke, 20mm adjust code, and G1/8 port. The MBLJ upgrades the construction from threaded covers to a riveted rolling-packed body.
The rear adjuster is a travel stop that sets the 330-350mm end position; it is not a lock and cannot hold a load without live air. This SKU also lacks a magnet, so it cannot accept a position sensor.
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Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X350-20 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
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