This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X150-40S, 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 MALJ20X150-40-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X150-40-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 40 mm, giving a usable end-position window from 110 to 150 mm. This model is discontinued — the direct replacement is the MBLJ20X150-40-S.
- BoreØ20 mm
- Stroke150 mm
- Adjust window110–150 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X150-40-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 MALJ20X150-40-S
The AirTAC MALJ20X150-40-S is a discontinued adjustable-stroke mini cylinder. As a direct replacement, use the MBLJ20X150-40-S (same 20mm bore, 150mm stroke, 40mm adjust, G1/8 port, and force). This double-acting double-rod unit provides a usable travel window of 110-150mm, letting you dial in the exact end position without external stops.
The rear adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. End impact is softened by a fixed rubber bumper (there is no adjustable air cushion). The original MALJ uses threaded covers and a CS1-M/DS1-M magnet sensor track, while the MBLJ upgrade features a riveted rolling-packed body and CMSG/DMSG/EMSG sensors.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X150-40-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X150-40-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X150-40-S |
| Bore size | Ø20 mm |
| Stroke | 150 mm |
| Adjustable window | 110 – 150 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 MBLJ20X150-40-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 MBLJ20X150-40-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X150-40-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×150 | Nominal stroke length in mm. |
| -40 | Adjustable amount: trim the end to a 110–150 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 MALJ20X150-40-S Is Used
Wire Stripper Gauge
Adjust the rear stop to 120mm for a wire stripping station, ensuring the cutter retracts cleanly to clear insulation thickness before the next feed cycle.
Light Part Ejector
Fine-tune the ejection stroke on a small plastic clip assembly press, using the 40mm adjustment to time the release perfectly without repositioning the cylinder block.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X150-40-S with MBLJ20X150-40-S
To replace this MALJ20X150-40-S, order the exact direct replacement MBLJ20X150-40-S. Confirm the 20mm bore, 150mm stroke, 40mm adjust code, G1/8 port, M8x1.25 rod thread, and FA/LB mounting (there is no back cover or SDB option). Note that the -S magnet requires a sensor family change from CS1-M/DS1-M to CMSG/DMSG/EMSG. The rear adjuster is a stop, not a lock; use an external lock for held loads. At 150mm stroke, prevent rod bending by managing side loads.
Upgrade checklist
- ✓ Order the MBLJ20X150-40-S (same bore/stroke/adjust)
- ✓ Same 110–150 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 MBLJ20X150-40-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X150-40-S FAQ
Yes, the MALJ20X150-40-S is discontinued. The direct replacement is the MBLJ20X150-40-S, which matches the 20mm bore, 150mm stroke, 40mm adjust code, 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 -40 adjust code lets you trim up to 40mm at the rear, creating a usable stroke window of 110-150mm. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X150-40-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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