This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X100-40, 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 MALJ20X100-40
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-40 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 40 mm, giving a usable end-position window from 60 to 100 mm. This model is discontinued — the direct replacement is the MBLJ20X100-40.
- BoreØ20 mm
- Stroke100 mm
- Adjust window60–100 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X100-40
- 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 MALJ20X100-40
The AirTAC MALJ20X100-40 is a discontinued 20mm bore, double-acting mini cylinder with a 100mm stroke and a 40mm rear adjustable stop. It gives a usable end-position window of 60-100mm. The direct replacement is the MBLJ20X100-40, matching bore, stroke, force, G1/8 port and mounting.
This SKU has no magnet (-S), so it cannot accept a position sensor. Two upgrade details: the MALJ uses threaded covers while the MBLJ uses a riveted rolling-packed body. Also, the 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, not an adjustable air cushion.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-40 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-40 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X100-40 |
| Bore size | Ø20 mm |
| Stroke | 100 mm |
| Adjustable window | 60 – 100 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 MBLJ20X100-40 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 MBLJ20X100-40 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-40
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×100 | Nominal stroke length in mm. |
| -40 | Adjustable amount: trim the end to a 60–100 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 MALJ20X100-40 Is Used
Connector Insertion Depth
Set a precise 75mm end window to press modular wire connectors into housings, relying on the fixed rubber bumper to absorb the 132N pull return impact without damaging the delicate pins.
Lightweight Carton Flap Fold
Adjust the travel down to 80mm to fold small packaging carton flaps on a rotary machine, where the 8mm rod and 32kgf max force provide fast, compact actuation in tight clearances.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-40 with MBLJ20X100-40
Replace this MALJ20X100-40 with the direct replacement MBLJ20X100-40. Confirm the 20mm bore, 100mm stroke, 40mm adjust code, G1/8 port, M8x1.25 rod thread and FA/LB mounting (no back cover or SDB). If you need a sensor, note the MBLJ moves to CMSG/DMSG/EMSG switches. Remember the adjuster is a stop, not a lock.
To size either way: stepping down, the neighbouring 20mm bore with less stroke gives the same 157N/132N forces at 0.5MPa. For long 100mm strokes on an 8mm rod, use a guide to prevent rod bending under side loads.
Upgrade checklist
- ✓ Order the MBLJ20X100-40 (same bore/stroke/adjust)
- ✓ Same 60–100 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 MBLJ20X100-40 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-40 FAQ
Yes, the MALJ20X100-40 is discontinued. The direct replacement is the MBLJ20X100-40, matching the 20mm bore, 100mm stroke, 40mm adjust code, G1/8 port and FA/LB mounting. The MBLJ upgrades to a riveted rolling-packed body and uses CMSG/DMSG/EMSG sensors if you add a magnet.
The usable adjustable window is 60-100mm (100mm stroke minus the 40mm rear stop). The rear adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X100-40 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 MALJ20X100-40 → MBLJ20X100-40)
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