This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X125-100S, 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 MALJ20X125-100-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-100-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 100 mm, giving a usable end-position window from 25 to 125 mm. This model is discontinued — the direct replacement is the MBLJ20X125-100-S.
- BoreØ20 mm
- Stroke125 mm
- Adjust window25–125 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X125-100-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 MALJ20X125-100-S
The AirTAC MALJ20X125-100-S is a discontinued adjustable-stroke mini cylinder. It is double-acting with a double rod, offering a usable stroke window of 25-125 mm by trimming up to 100 mm at the rear screw. The direct replacement is the MBLJ20X125-100-S, matching the bore, stroke, force, G1/8 port, and mounting.
This -S model uses a CS1-M or DS1-M magnet sensor, whereas the MBLJ upgrade uses CMSG/DMSG/EMSG switches. The original MALJ features threaded covers, while the MBLJ replacement uses a riveted rolling-packed body. The rear adjuster functions as a travel stop to fine-tune reach without external bolts, but it does not hold a load without live air. Impact is softened only by a fixed rubber bumper, as there is no adjustable air cushion.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-100-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-100-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X125-100-S |
| Bore size | Ø20 mm |
| Stroke | 125 mm |
| Adjustable window | 25 – 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 MBLJ20X125-100-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 MBLJ20X125-100-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-100-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. |
| -100 | Adjustable amount: trim the end to a 25–125 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 MALJ20X125-100-S Is Used
Textile Guide Rail Tweaking
Fine-tune the reach of a yarn guide without swapping hardware, trimming 100 mm of travel to perfectly align the thread feed without overextending the delicate 8 mm rod.
Small Parts Ejector Setup
Adjust the kick-out distance on a small parts ejection chute, ensuring the cylinder bottoms out on the rubber bumper at the exact 125 mm max stroke to dislodge components gently.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-100-S with MBLJ20X125-100-S
To replace this MALJ20X125-100-S, order the exact direct replacement MBLJ20X125-100-S. Confirm the 20 mm bore, 125 mm stroke, 100 mm adjust code, G1/8 PT port, 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 is a travel stop, not a lock, so an external lock is required for held loads.
At 125 mm stroke, keep the rod side-load minimized to prevent bending, as the 8 mm rod is relatively slender.
Upgrade checklist
- ✓ Order the MBLJ20X125-100-S (same bore/stroke/adjust)
- ✓ Same 25–125 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 MBLJ20X125-100-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X125-100-S FAQ
Yes, the MALJ20X125-100-S is discontinued. The direct replacement is the MBLJ20X125-100-S, which matches the 20 mm bore, 125 mm stroke, 100 mm adjust code, G1/8 port, and mounting. You will only need to update your sensor family from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The -100 adjust code allows you to trim up to 100 mm at the rear, creating a usable stroke window of 25-125 mm. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X125-100-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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