This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X125-30S, 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 MALJ20X125-30-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-30-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 30 mm, giving a usable end-position window from 95 to 125 mm. This model is discontinued — the direct replacement is the MBLJ20X125-30-S.
- BoreØ20 mm
- Stroke125 mm
- Adjust window95–125 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X125-30-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 MALJ20X125-30-S
The AirTAC MALJ20X125-30-S is a discontinued adjustable-stroke mini cylinder. It is double-acting with a double rod, an 8mm carbon-steel rod, and a G1/8 port. The -30 adjuster code means you can trim up to 30mm at the rear screw, giving a usable end-position window of 95-125mm. The direct replacement is the MBLJ20X125-30-S, which matches the bore, stroke, force, and port.
This -S magnet model uses the older CS1-M or DS1-M switches; the MBLJ replacement upgrades to CMSG, DMSG, or EMSG sensors. The original MALJ features threaded covers and a fixed rubber bumper, while the MBLJ uses a riveted rolling-packed body. Remember the adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. An external lock is required for holding.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-30-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-30-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X125-30-S |
| Bore size | Ø20 mm |
| Stroke | 125 mm |
| Adjustable window | 95 – 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 MBLJ20X125-30-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 MBLJ20X125-30-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-30-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. |
| -30 | Adjustable amount: trim the end to a 95–125 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 MALJ20X125-30-S Is Used
Wire Straightener Guides
Fine-tune the exit position window for a wire straightening machine, letting the 8mm rod pull 132N to guide material without re-engineering the fixture.
Connector Insertion Jigs
Adjust the end stop to protect delicate electronic connectors from over-insertion, using the fixed rubber bumper to soften the final impact.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-30-S with MBLJ20X125-30-S
To replace this MALJ20X125-30-S, order the direct replacement MBLJ20X125-30-S. Confirm the 20mm bore, 125mm stroke, 30mm adjust code, G1/8 port, and M8x1.25 rod-end thread. Mounting is FA or LB only; there is no back-cover or SDB option. The -S magnet means a sensor family change from CS1-M/DS1-M to CMSG/DMSG/EMSG. The rear adjuster is a stop, not a lock. At 125mm stroke, watch for rod-bending side loads.
Upgrade checklist
- ✓ Order the MBLJ20X125-30-S (same bore/stroke/adjust)
- ✓ Same 95–125 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 MBLJ20X125-30-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-30-S FAQ
Yes, the MALJ20X125-30-S is discontinued. The direct replacement is the MBLJ20X125-30-S, which matches the bore, stroke, adjust code, and port. The MBLJ upgrades the body to a riveted rolling-packed design and changes the magnet switches from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The -30 adjust code lets you trim up to 30mm at the rear, giving a usable stroke window of 95-125mm. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X125-30-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
Request a Quote (Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-30-S → MBLJ20X125-30-S)
Tell us the quantity and destination — we quote the direct MBLJ20X125-30-S replacement with price, stock and lead time, usually within 7-8 hours.