This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X175-50, 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 MALJ20X175-50
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-50 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 125 to 175 mm. This model is discontinued — the direct replacement is the MBLJ20X175-50.
- BoreØ20 mm
- Stroke175 mm
- Adjust window125–175 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X175-50
- 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 MALJ20X175-50
The AirTAC MALJ20X175-50 adjustable-stroke mini cylinder is discontinued. The direct replacement is the MBLJ20X175-50, matching the 20mm bore, 175mm stroke, 50mm adjuster, G1/8 port, and mounting footprint. This double-acting double-rod actuator trims up to 50mm at the rear screw, creating a usable end-position window of 125-175mm.
The rear adjuster sets travel limits but is a stop, not a lock; it will not hold a load without live air. This SKU lacks the -S magnet, so it cannot accept a position sensor. The MALJ uses threaded covers and fixed rubber bumpers, while the MBLJ upgrades to a riveted rolling-packed body.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-50 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-50 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X175-50 |
| Bore size | Ø20 mm |
| Stroke | 175 mm |
| Adjustable window | 125 – 175 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 MBLJ20X175-50 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 MBLJ20X175-50 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-50
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×175 | Nominal stroke length in mm. |
| -50 | Adjustable amount: trim the end to a 125–175 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 MALJ20X175-50 Is Used
PCB Drill Depth Stop
Dial the rear stop to 150mm to set precise Z-axis plunge depth for a PCB drilling spindle without reprogramming travel limits.
Leather Press Tensioning
Adjusts the end position on a leather embossing press, allowing operators to tune material compression without swapping cylinder hardware.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-50 with MBLJ20X175-50
To replace the MALJ20X175-50, install the direct replacement MBLJ20X175-50. Confirm the 20mm bore, 175mm stroke, 50mm adjust code, G1/8 port, PT thread, and FA/LB mounting (no back cover or SDB). The adjuster is a travel stop, not a lock. If stepping down, note 20mm is the smallest MALJ bore available. At 175mm stroke, minimize side-load to prevent rod bending.
Upgrade checklist
- ✓ Order the MBLJ20X175-50 (same bore/stroke/adjust)
- ✓ Same 125–175 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 MBLJ20X175-50 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X175-50 FAQ
Yes, the MALJ20X175-50 is discontinued. The direct replacement is the MBLJ20X175-50, matching the 20mm bore, 175mm stroke, 50mm adjust code, and G1/8 port. The MBLJ upgrades the body to a riveted rolling-packed design, and if you ever need a sensor, the MBLJ uses CMSG/DMSG/EMSG switches (this no-S MALJ cannot take a sensor).
The 50mm adjuster creates a usable stroke window of 125-175mm. The adjuster is a travel stop, not a lock, and the fixed rubber bumper softens end impact without providing adjustable cushioning.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X175-50 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 MALJ20X175-50 → MBLJ20X175-50)
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