This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X125-10, 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 MALJ20X125-10
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-10 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 115 to 125 mm. This model is discontinued — the direct replacement is the MBLJ20X125-10.
- BoreØ20 mm
- Stroke125 mm
- Adjust window115–125 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X125-10
- 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 MALJ20X125-10
The AirTAC MALJ20X125-10 is a discontinued double-acting double-rod mini cylinder with a 20mm bore and 125mm stroke. A rear stopper screw lets you trim up to 10mm, giving a usable end-position window of 115-125mm. The direct replacement is the MBLJ20X125-10, matching bore, stroke, adjust code, port and mounting.
This SKU lacks the -S magnet, so it cannot accept a position sensor. The adjuster sets the end position but is a travel stop, not a lock, so it will not hold a load without live air. Impact is softened by a fixed rubber bumper, not an adjustable air cushion. The original MALJ uses threaded covers and PT port threads, while the MBLJ upgrade features a riveted rolling-packed body.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-10 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-10 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X125-10 |
| Bore size | Ø20 mm |
| Stroke | 125 mm |
| Adjustable window | 115 – 125 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 MBLJ20X125-10 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 MBLJ20X125-10 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-10
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×125 | Nominal stroke length in mm. |
| -10 | Adjustable amount: trim the end to a 115–125 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 MALJ20X125-10 Is Used
Dispenser Valve Capping
Fine-tune the downstroke on a cosmetic filler dispenser capping head, trimming 10mm at the rear to prevent crushing fragile plastic threads without adding external stops.
Label Applicator Tamp
Adjust the tamp stroke on a bottle label applicator to compensate for varying container heights, using the fixed rubber bumper to absorb the end-of-stroke impact cleanly.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-10 with MBLJ20X125-10
To replace the MALJ20X125-10, order the exact direct replacement MBLJ20X125-10. Confirm your 20mm bore, 125mm stroke, 10mm adjust code, G1/8 port, M8x1.25 rod thread and FA or LB mounting. Because this SKU has no -S magnet, it cannot take a sensor; the MBLJ upgrade uses CMSG/DMSG/EMSG switches if you add one. The adjuster is a stop, not a lock. For strokes at or over 300mm, rod side-load and bending risks increase, but this 125mm length is safe.
Upgrade checklist
- ✓ Order the MBLJ20X125-10 (same bore/stroke/adjust)
- ✓ Same 115–125 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 MBLJ20X125-10 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-10 FAQ
Yes, the MALJ20X125-10 is discontinued. The direct replacement is the MBLJ20X125-10, which matches the 20mm bore, 125mm stroke, 10mm adjust code, G1/8 port and mounting. The MBLJ upgrades the body to a riveted rolling-packed design and uses CMSG/DMSG/EMSG sensors.
The -10 adjust code allows you to trim up to 10mm at the rear, creating a usable stroke window of 115-125mm. The adjuster is a travel stop, not a lock, and it cannot hold a load without live air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X125-10 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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