This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X25-30, 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 MALJ20X25-30
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X25-30 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 -5 to 25 mm. This model is discontinued — the direct replacement is the MBLJ20X25-30.
- BoreØ20 mm
- Stroke25 mm
- Adjust window-5–25 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X25-30
- 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 MALJ20X25-30
The AirTAC MALJ20X25-30 is a discontinued double-acting double-rod mini cylinder with a 20mm bore and 25mm stroke. It uses a rear screw to trim up to 30mm, yielding a usable 0-25mm end-position window for precise depth control. The direct replacement is the MBLJ20X25-30, matching bore, stroke, force, G1/8 port, and mounting.
This SKU lacks the -S magnet and cannot accept a position sensor. The adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. The MALJ uses a fixed rubber bumper and threaded covers, whereas the MBLJ upgrade features a riveted rolling-packed body. If you need a sensor, the MBLJ uses CMSG/DMSG/EMSG switches.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X25-30 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X25-30 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X25-30 |
| Bore size | Ø20 mm |
| Stroke | 25 mm |
| Adjustable window | -5 – 25 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 MBLJ20X25-30 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 MBLJ20X25-30 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X25-30
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×25 | Nominal stroke length in mm. |
| -30 | Adjustable amount: trim the end to a -5–25 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 MALJ20X25-30 Is Used
Micro-Dispenser Valve Pin
Adjusts the stroke window for a metering pin on an epoxy syringe dispenser, letting operators fine-tune shot size by moving the cylinder's end stop rather than swapping mechanical hardware.
Connector Alignment Fork
Sets a precise reach for a wire connector alignment fork in harness assembly, where the 132N pull force retracts the guide safely without bending delicate 8mm pins.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X25-30 with MBLJ20X25-30
To replace the MALJ20X25-30, order the direct replacement MBLJ20X25-30. Confirm the 20mm bore, 25mm stroke, 30mm adjust code, G1/8 PT port, and FA/LB mounting (no back cover or SDB). This magnet-free SKU cannot take a sensor; upgrading to the MBLJ with a -S magnet allows CMSG/DMSG/EMSG switches. Remember the adjuster is a stop, not a lock.
For sizing, stepping down is not possible as 20mm is the smallest bore.
Upgrade checklist
- ✓ Order the MBLJ20X25-30 (same bore/stroke/adjust)
- ✓ Same -5–25 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 MBLJ20X25-30 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X25-30 FAQ
Yes, the MALJ20X25-30 is discontinued. The direct replacement is the MBLJ20X25-30, matching the 20mm bore, 25mm stroke, 30mm adjust code, and G1/8 port. The MBLJ upgrades the threaded covers to a riveted rolling-packed body.
The 30mm adjust code allows trimming up to 30mm at the rear, creating a 0-25mm usable stroke window. The adjuster is a travel stop, not a lock, and this no-S SKU cannot accept a position sensor.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X25-30 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 MALJ20X25-30 → MBLJ20X25-30)
Tell us the quantity and destination — we quote the direct MBLJ20X25-30 replacement with price, stock and lead time, usually within 7-8 hours.