This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X55-10, 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 MALJ20X55-10
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X55-10 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 10 mm, giving a usable end-position window from 45 to 55 mm. This model is discontinued — the direct replacement is the MBLJ20X55-10.
- BoreØ20 mm
- Stroke55 mm
- Adjust window45–55 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X55-10
- 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 MALJ20X55-10
The AirTAC MALJ20X55-10 is a discontinued adjustable-stroke mini cylinder with a 20mm bore and 55mm stroke. A rear screw lets you trim up to 10mm, creating a usable end-position window of 45-55mm. The direct replacement is the MBLJ20X55-10, matching the bore, stroke, adjust code, G1/8 port, and mounting.
This SKU lacks a magnet (-S), so it cannot accept a position sensor. The adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. The original MALJ uses threaded covers and the older CS1-M/DS1-M sensor family, while the MBLJ upgrade features a riveted rolling-packed body with CMSG/DMSG/EMSG switches. Impact is softened by a fixed rubber bumper, as there is no adjustable air cushion.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X55-10 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X55-10 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X55-10 |
| Bore size | Ø20 mm |
| Stroke | 55 mm |
| Adjustable window | 45 – 55 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 MBLJ20X55-10 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 MBLJ20X55-10 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X55-10
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×55 | Nominal stroke length in mm. |
| -10 | Adjustable amount: trim the end to a 45–55 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 MALJ20X55-10 Is Used
Light-Duty Forming Press
Fine-tune the 10mm rear stopper to adjust the rest position for thin sheet metal bending, relying on the fixed rubber bumper to absorb the 132N pull impact at cycle end.
Dispense Valve Positioning
Set the precise 45-55mm extension to lower a dispensing needle just above an enclosure, preventing tip damage while applying consistent contact pressure.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X55-10 with MBLJ20X55-10
To replace the MALJ20X55-10, order the MBLJ20X55-10. Confirm the 20mm bore, 55mm stroke, 10mm adjust code, G1/8 port, PT threads, and FA/LB mounting (there is no back-cover or SDB option). Since this SKU has no -S magnet, it cannot hold a sensor; if you need position detection, step up to an MBLJ20X55-10S. The adjuster is a travel stop, not a lock, so add an external lock for held loads.
Upgrade checklist
- ✓ Order the MBLJ20X55-10 (same bore/stroke/adjust)
- ✓ Same 45–55 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 MBLJ20X55-10 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X55-10 FAQ
Yes, the MALJ20X55-10 is discontinued. The direct replacement is the MBLJ20X55-10, which matches the 20mm bore, 55mm stroke, 10mm adjust code, and G1/8 port. The MBLJ upgrades the body to a riveted rolling-packed design; if you need a sensor, the MBLJ uses CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M.
The 10mm adjust code lets you trim the rear stopper, creating a usable stroke window of 45-55mm. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X55-10 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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