This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X350-30-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 MALJ20X350-30-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-30-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 30 mm, giving a usable end-position window from 320 to 350 mm. This model is discontinued — the direct replacement is the MBLJ20X350-30-S.
- BoreØ20 mm
- Stroke350 mm
- Adjust window320–350 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X350-30-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 MALJ20X350-30-S
The AirTAC MALJ20X350-30-S is a discontinued double-acting mini cylinder with a 20 mm bore and a non-standard 350 mm stroke. The 30 mm rear adjuster provides a usable travel window of 320-350 mm. The direct replacement is the MBLJ20X350-30-S, matching the bore, stroke, adjuster, G1/8 port, and mounting.
This SKU includes a magnet (-S) for CS1-M / DS1-M switches, while the MBLJ replacement upgrades to CMSG / DMSG / EMSG sensors. The original MALJ uses threaded covers; the MBLJ uses a riveted rolling-packed body. A fixed rubber bumper absorbs end impact, but the rear adjuster is a travel stop, not a lock. It cannot hold a load without live air.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-30-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-30-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X350-30-S |
| Bore size | Ø20 mm |
| Stroke | 350 mm |
| Adjustable window | 320 – 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 MBLJ20X350-30-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 MBLJ20X350-30-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-30-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. |
| -30 | Adjustable amount: trim the end to a 320–350 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 MALJ20X350-30-S Is Used
Textile Loom Tensioner
Fine-tunes the 350 mm full extension to align fabric guides, letting operators trim 30 mm at the rear without machining new bracket spacing.
Thin-Film Web Splicing
Sets a precise end position for a splicing head on long moving webs, preventing the 8 mm rod from bottoming out harshly via the fixed rubber bumper.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-30-S with MBLJ20X350-30-S
To replace the MALJ20X350-30-S, install the MBLJ20X350-30-S. Confirm the 20 mm bore, 350 mm stroke, 30 mm adjust code, G1/8 port, PT thread, and FA/LB mounting (no back cover or SDB). The -S magnet changes the sensor family from CS1-M / DS1-M to CMSG / DMSG / EMSG.
At 350 mm, this non-standard stroke exceeds the 300 mm max standard for a 20 mm bore, requiring made-to-order attention. On this long stroke, the 8 mm rod is vulnerable to side-load bending. Use guided mounts to prevent rod deflection. The adjuster sets the end position but does not lock the load.
Upgrade checklist
- ✓ Order the MBLJ20X350-30-S (same bore/stroke/adjust)
- ✓ Same 320–350 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 MBLJ20X350-30-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X350-30-S FAQ
Yes, the MALJ20X350-30-S is discontinued. The direct replacement is the MBLJ20X350-30-S, matching the 20 mm bore, 350 mm stroke, 30 mm adjuster, G1/8 port, and mounting. The MBLJ upgrades the body to a riveted rolling-packed design and changes the magnet sensors from CS1-M / DS1-M to CMSG / DMSG / EMSG.
The usable adjustable window is 320-350 mm (350 mm stroke minus 30 mm adjust). The rear adjuster 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 MBLJ20X350-30-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 MALJ20X350-30-S → MBLJ20X350-30-S)
Tell us the quantity and destination — we quote the direct MBLJ20X350-30-S replacement with price, stock and lead time, usually within 7-8 hours.