This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X125-75, 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 MALJ20X125-75
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-75 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 75 mm, giving a usable end-position window from 50 to 125 mm. This model is discontinued — the direct replacement is the MBLJ20X125-75.
- BoreØ20 mm
- Stroke125 mm
- Adjust window50–125 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X125-75
- 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 MALJ20X125-75
The AirTAC MALJ20X125-75 is a discontinued double-acting mini cylinder with a 20 mm bore, 125 mm stroke, and a 75 mm rear adjuster. This yields a usable end-position window of 50-125 mm. The direct replacement is the MBLJ20X125-75, matching the bore, stroke, G1/8 port and mounting.
This SKU lacks a magnet (-S), so it cannot accept a position sensor. The rear adjuster is a travel stop, not a lock; it cannot hold a load without live air. The fixed rubber bumper softens end impact. Upgrading to the MBLJ moves you from threaded covers to a riveted rolling-packed body.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-75 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-75 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X125-75 |
| Bore size | Ø20 mm |
| Stroke | 125 mm |
| Adjustable window | 50 – 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 MBLJ20X125-75 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 MBLJ20X125-75 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-75
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×125 | Nominal stroke length in mm. |
| -75 | Adjustable amount: trim the end to a 50–125 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 MALJ20X125-75 Is Used
Small-Part Forming Pin
Adjust the down-stroke on a brass contact forming station to crimp precisely without bottoming out, relying on the fixed rubber bumper to absorb the 0.7 MPa impact.
Carton Flap Plow
Tune the retract distance on a packaging line carton plow to clear varying box heights, using the 132 N pull force to retract the guide arm out of the product flow.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-75 with MBLJ20X125-75
To replace this MALJ20X125-75, order the direct replacement MBLJ20X125-75. Confirm your 20 mm bore, 125 mm stroke, 75 mm adjust code, G1/8 port, PT threads, and FA/LB mounting (no back cover or SDB). Since this SKU has no magnet, you lose any sensor capability; upgrading to an MBLJ with -S brings modern CMSG/DMSG/EMSG switches. The adjuster sets end position but is not a lock. At 125 mm stroke, watch rod side-load to prevent bending.
Upgrade checklist
- ✓ Order the MBLJ20X125-75 (same bore/stroke/adjust)
- ✓ Same 50–125 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 MBLJ20X125-75 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-75 FAQ
Yes, the MALJ20X125-75 is discontinued. The direct replacement is the MBLJ20X125-75, which matches the 20 mm bore, 125 mm stroke, 75 mm adjuster, G1/8 port, and force. The MBLJ upgrades the body to a riveted rolling-packed design from the original threaded covers.
At 0.7 MPa the push force is 220 N, with a maximum of 32 kgf at 1.0 MPa. The 75 mm adjuster allows you to trim the 125 mm stroke down to a 50 mm minimum usable window. The adjuster is a travel stop only, not a lock, and this no-magnet SKU cannot accept a sensor.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X125-75 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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