This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X125-75S, 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-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-75-S 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-S.
- BoreØ20 mm
- Stroke125 mm
- Adjust window50–125 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X125-75-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 MALJ20X125-75-S
The AirTAC MALJ20X125-75-S is a discontinued double-acting mini cylinder with a 20mm bore and 125mm stroke. It is directly replaced by the MBLJ20X125-75-S direct. The 75mm adjuster gives a usable end-position window of 50-125mm.
The rear screw is a travel stop, not a lock; it cannot hold a load without live air. The fixed rubber bumper softens end impact but is not an adjustable cushion. The original MALJ has threaded covers and a -S magnet for CS1-M/DS1-M switches, while the MBLJ replacement features a riveted rolling-packed body and CMSG/DMSG/EMSG sensors.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-75-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-75-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X125-75-S |
| 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-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 MBLJ20X125-75-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-75-S
| 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-S Is Used
Dispenser Nozzle Height
Trim the rear stopper to fine-tune the nozzle gap for viscous epoxy dots on a rotary indexer, preventing the 8mm rod from over-driving into the workpiece.
Leaded Component Forming
Adjust the end position to bend axial resistor leads to precise standoffs, relying on the fixed rubber bumper to absorb the 132N pull impact at cycle end.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-75-S with MBLJ20X125-75-S
To replace the MALJ20X125-75-S, order the MBLJ20X125-75-S. Confirm the 20mm bore, 125mm stroke, 75mm adjust code, G1/8 port, PT thread, and FA/LB mounting (no back cover or SDB). The -S magnet changes sensor families from CS1-M/DS1-M to CMSG/DMSG/EMSG. The adjuster sets end position but does not lock the load.
At 125mm stroke, use guide rails to prevent rod bending from side loads.
Upgrade checklist
- ✓ Order the MBLJ20X125-75-S (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-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-75-S FAQ
Yes, the MALJ20X125-75-S is discontinued. The direct replacement is the MBLJ20X125-75-S, which keeps the 20mm bore, 125mm stroke, 75mm adjust code, G1/8 port, and FA/LB mounting. The upgrade changes the body from threaded covers to a riveted rolling-packed design, and the -S magnet switches from CS1-M/DS1-M to CMSG/DMSG/EMSG sensors.
The usable adjustable window is 50-125mm (125mm stroke minus 75mm adjust). The 75mm adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X125-75-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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