This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X225-50S, 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 MALJ20X225-50-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X225-50-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 50 mm, giving a usable end-position window from 175 to 225 mm. This model is discontinued — the direct replacement is the MBLJ20X225-50-S.
- BoreØ20 mm
- Stroke225 mm
- Adjust window175–225 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X225-50-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 MALJ20X225-50-S
The AirTAC MALJ20X225-50-S is a discontinued double-acting mini cylinder with a 50 mm rear adjuster, yielding a usable stroke window of 175-225 mm. The direct replacement is the MBLJ20X225-50-S.
This -S SKU uses the older CS1-M / DS1-M magnet switches, whereas the MBLJ upgrade uses CMSG / DMSG / EMSG sensors and a riveted rolling-packed body instead of the original threaded covers. The rear adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. Impact is softened by a fixed rubber bumper, as there is no adjustable air cushion.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X225-50-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X225-50-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X225-50-S |
| Bore size | Ø20 mm |
| Stroke | 225 mm |
| Adjustable window | 175 – 225 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 MBLJ20X225-50-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 MBLJ20X225-50-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X225-50-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×225 | Nominal stroke length in mm. |
| -50 | Adjustable amount: trim the end to a 175–225 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 MALJ20X225-50-S Is Used
Textile Loom Tensioner
Fine-tune the extended end position on a textile loom guide, absorbing web tension variations while relying on the fixed rubber bumper to soften the end-of-stroke impact.
Small Parts Ejector
Trim the rear 50 mm stop to time the ejection stroke of small plastic parts from an injection mold, ensuring the 8 mm rod clears the moving platen without overtravel.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X225-50-S with MBLJ20X225-50-S
To replace this MALJ20X225-50-S, order the MBLJ20X225-50-S. Confirm the 20 mm bore, 225 mm stroke, 50 mm adjust code, G1/8 port, PT thread, and FA/LB mounting (no back cover or SDB). Note the sensor family change from CS1-M / DS1-M to CMSG / DMSG / EMSG. The adjuster is a stop, not a lock.
If you need less force, there is no smaller MALJ bore. Because the 225 mm stroke is relatively long for a 20 mm rod, minimize side-load to prevent rod bending and seal wear.
Upgrade checklist
- ✓ Order the MBLJ20X225-50-S (same bore/stroke/adjust)
- ✓ Same 175–225 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 MBLJ20X225-50-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X225-50-S FAQ
Yes, the MALJ20X225-50-S is discontinued. The direct replacement is the MBLJ20X225-50-S, which matches the 20 mm bore, 225 mm stroke, 50 mm adjust code, G1/8 port, and force. You must update your sensors: the old CS1-M / DS1-M switches are replaced by CMSG / DMSG / EMSG on the new riveted body.
The 50 mm adjuster is a travel stop that lets you trim the usable stroke window down to 175 mm; it does not lock the load without live air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X225-50-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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