This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X400-100-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 MALJ20X400-100-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X400-100-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 300 to 400 mm. This model is discontinued — the direct replacement is the MBLJ20X400-100-S.
- BoreØ20 mm
- Stroke400 mm
- Adjust window300–400 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X400-100-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 MALJ20X400-100-S
A 100mm rear adjuster creates a usable end-position window of 300-400mm, letting you dial in exact reach without external stops. The direct replacement is the MBLJ20X400-100-S, matching bore, stroke, force, G1/8 port, and FA/LB mounting.
This -S SKU uses a CS1-M / DS1-M magnet sensor, which transitions to CMSG / DMSG / EMSG switches on the MBLJ upgrade. The MALJ features threaded covers and a fixed rubber bumper, whereas the MBLJ replacement uses a riveted rolling-packed body. Remember that the rear adjuster is a travel stop, not a lock; it cannot hold a load without live air pressure.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X400-100-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X400-100-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X400-100-S |
| Bore size | Ø20 mm |
| Stroke | 400 mm |
| Adjustable window | 300 – 400 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 MBLJ20X400-100-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 MBLJ20X400-100-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X400-100-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×400 | Nominal stroke length in mm. |
| -100 | Adjustable amount: trim the end to a 300–400 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 MALJ20X400-100-S Is Used
PCB Conveyor Diverter
Dials the push depth of a pneumatic gate on a PCB conveyor.
Textile Loom Guide
Adjusts the rest position of a yarn guide on a textile loom. The 100mm trim window allows exact thread layering across varied fabric widths, using the 8mm hard-chrome rod for smooth motion.
Packaging Flap Folder
Sets the tuck-in depth for carton flaps on a packaging line. The fixed rubber bumper softens the end impact, while the 132N pull force reliably retracts the folding arm.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X400-100-S with MBLJ20X400-100-S
To replace this MALJ20X400-100-S, order the MBLJ20X400-100-S. Confirm the 20mm bore, 400mm non-standard stroke, 100mm adjust code, PT G1/8 port, M8x1.25 rod-end thread, and FA/LB mounting (no back cover or SDB). The -S magnet requires switching from CS1-M / DS1-M to CMSG / DMSG / EMSG sensors. The rear adjuster sets the end position but is a stop, not a lock.
Because this 400mm stroke exceeds the 300mm standard, it is a made-to-order item; on long strokes, minimize side-load to prevent rod bending, as the fixed rubber bumper cannot absorb heavy lateral shocks.
Upgrade checklist
- ✓ Order the MBLJ20X400-100-S (same bore/stroke/adjust)
- ✓ Same 300–400 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 MBLJ20X400-100-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X400-100-S FAQ
Yes, the MALJ20X400-100-S is discontinued. The direct replacement is the MBLJ20X400-100-S, matching the 20mm bore, 400mm stroke, 100mm adjust code, G1/8 port, and FA/LB mounting. You will need to upgrade your sensors from CS1-M / DS1-M to CMSG / DMSG / EMSG switches.
The 100mm rear adjuster creates a usable stroke window of 300-400mm. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X400-100-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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