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-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 MALJ20X350-100-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-100-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 250 to 350 mm. This model is discontinued — the direct replacement is the MBLJ20X350-100-S.
- BoreØ20 mm
- Stroke350 mm
- Adjust window250–350 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X350-100-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 MALJ20X350-100-S
The AirTAC MALJ20X350-100-S is a discontinued double-acting, double-rod adjustable-stroke mini cylinder. It has a 20 mm bore and a 350 mm stroke, but because this exceeds the 300 mm standard maximum, it is a non-standard, made-to-order part. The rear adjuster lets you trim up to 100 mm, giving a usable end-position window of 250-350 mm.
The direct replacement is the MBLJ20X350-100-S, matching the bore, stroke, adjust code, and G1/8 port. The 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. This old MALJ uses threaded covers and a CS1-M / DS1-M magnet sensor, while the MBLJ upgrade features a riveted rolling-packed body and CMSG / DMSG / EMSG sensors.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-100-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-100-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X350-100-S |
| 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-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 MBLJ20X350-100-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-100-S
| 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-S Is Used
PCB Depaneling Router
Dial the end stop from 350 mm down to 250 mm to set exact router depth on a PCB depaneling machine without remachining the fixture.
Thin-Wall Tube End Forming
Provides 132 N pull force to retract a small forming mandrel from thin-wall brass tubing, using the 100 mm adjuster to dial the exact retraction point.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-100-S with MBLJ20X350-100-S
To replace this MALJ20X350-100-S, order the MBLJ20X350-100-S. Confirm the 20 mm bore, 350 mm stroke, 100 mm adjust code, PT G1/8 port, M8x1.25 rod thread, and basic mounting (no back cover or SDB). The -S magnet means you must switch from the old CS1-M / DS1-M switches to the new CMSG / DMSG / EMSG family. Remember the adjuster is a stop, not a lock.
Stepping up is not possible as 20 mm is the smallest MALJ bore. Because the 350 mm stroke is non-standard and exceeds 300 mm, watch for rod-bending under side loads on long extensions.
Upgrade checklist
- ✓ Order the MBLJ20X350-100-S (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-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-100-S FAQ
Yes, the MALJ20X350-100-S is discontinued. The direct replacement is the MBLJ20X350-100-S, which matches the 20 mm bore, 350 mm stroke, 100 mm adjust code, and G1/8 port. You must upgrade your sensors from the old CS1-M / DS1-M to the new CMSG / DMSG / EMSG family.
The usable stroke window is 250-350 mm, set by the 100 mm rear adjuster. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X350-100-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
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