This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X350-100, 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 MALJ20X350-100
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-100 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 250 to 350 mm. This model is discontinued — the direct replacement is the MBLJ20X350-100.
- BoreØ20 mm
- Stroke350 mm
- Adjust window250–350 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X350-100
- 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 MALJ20X350-100
The AirTAC MALJ20X350-100 is a discontinued, double-acting double-rod mini cylinder with a rear adjustable stroke stopper. It has a 20mm bore, a 350mm stroke, and a 100mm adjust code, giving a usable end-position window of 250-350mm. Because the 350mm stroke exceeds the 300mm standard maximum for this bore, it is a non-standard, made-to-order length. The direct replacement is the MBLJ20X350-100, which matches the bore, stroke, force, G1/8 port, 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. The fixed rubber bumper softens end impact, but this is not an adjustable cushion. This SKU lacks a magnet (-S), so it cannot take a position sensor. The original MALJ uses threaded covers and PT port threads, while the MBLJ upgrade features a riveted rolling-packed body.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-100 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-100 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X350-100 |
| Bore size | Ø20 mm |
| Stroke | 350 mm |
| Adjustable window | 250 – 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 MBLJ20X350-100 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 MBLJ20X350-100 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-100
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×350 | Nominal stroke length in mm. |
| -100 | Adjustable amount: trim the end to a 250–350 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 MALJ20X350-100 Is Used
PCB Router Z-Axis
Dials the cutting depth on a PCB depaneling router.
Textile Guide Arm
Sets the swing limit on a fabric loom guide arm. The 100mm rear stopper window fine-tunes the weave pattern tension without adding external physical stops to the long 350mm frame.
Carton Flap Folder
Adjusts the stroke end-position on a packaging line flap folder. The fixed rubber bumper absorbs the 350mm extension impact, protecting the 32 kgf max force from shocking the carton drive.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-100 with MBLJ20X350-100
To replace the MALJ20X350-100, order the direct replacement MBLJ20X350-100. Confirm the 20mm bore, 350mm stroke, 100mm adjust code, G1/8 port, PT threads, and FA/LB mounting (no back cover or SDB allowed). Since this SKU lacks the -S magnet, it cannot accept a sensor; if you need sensing, the MBLJ upgrade uses CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M. The adjuster is a stop, not a lock.
Because the 350mm stroke is non-standard and exceeds 300mm, watch for rod-bending under side loads—guide the load externally to prevent damage.
Upgrade checklist
- ✓ Order the MBLJ20X350-100 (same bore/stroke/adjust)
- ✓ Same 250–350 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 MBLJ20X350-100 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-100 FAQ
Yes, the MALJ20X350-100 is discontinued. The direct replacement is the MBLJ20X350-100, matching the 20mm bore, 350mm stroke, 100mm adjust code, force, and G1/8 port. The MBLJ upgrades the body to a riveted rolling-packed design from the original threaded covers.
The 100mm adjust code gives a usable end-position window of 250-350mm. The rear screw is a travel stop, not a lock, and cannot hold a load without live air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X350-100 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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