This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X80-100-S, 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 MALJ20X80-100-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-100-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 -20 to 80 mm. This model is discontinued — the direct replacement is the MBLJ20X80-100-S.
- BoreØ20 mm
- Stroke80 mm
- Adjust window-20–80 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X80-100-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 MALJ20X80-100-S
The AirTAC MALJ20X80-100-S is a discontinued double-acting double-rod mini cylinder with a rear adjustable stroke stopper. It features a 20 mm bore and an 80 mm stroke, but because the 100 mm adjust code exceeds the stroke, you can dial the end position all the way back to zero, yielding a usable 0-80 mm window. The direct replacement is the MBLJ20X80-100-S, which matches the bore, stroke, G1/8 port, and FA/LB mounting options.
This -S variant includes a magnet for the older CS1-M / DS1-M switches, whereas the MBLJ replacement uses CMSG / DMSG / EMSG sensors. The MALJ uses threaded covers, while the MBLJ features a riveted rolling-packed body. Remember that the rear adjuster is a travel stop, not a lock; it sets the end position but cannot hold a load without live air. Impact is softened by a fixed rubber bumper, as there is no air cushion.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-100-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-100-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X80-100-S |
| Bore size | Ø20 mm |
| Stroke | 80 mm |
| Adjustable window | -20 – 80 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 MBLJ20X80-100-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 MBLJ20X80-100-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-100-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×80 | Nominal stroke length in mm. |
| -100 | Adjustable amount: trim the end to a -20–80 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 MALJ20X80-100-S Is Used
PCB Router Z-Axis Stop
Dial the 0-80 mm stroke window to set the exact Z-axis cutting depth on a desktop PCB router, preventing the 8 mm rod from crashing into the spoilboard.
Dispense Valve Probing
Adjust the end position to tune the lower travel limit of a pneumatic dispensing valve, compensating for needle length variations without adding external spacers.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-100-S with MBLJ20X80-100-S
To replace the MALJ20X80-100-S, order the MBLJ20X80-100-S. Confirm your 20 mm bore, 80 mm stroke, 100 mm adjust code, G1/8 port, PT thread, and FA/LB mounting (there is no back cover or SDB option). Swap the CS1-M / DS1-M sensors for CMSG / DMSG / EMSG switches. The adjuster is a travel stop, not a lock, so add an external lock for held loads.
Upgrade checklist
- ✓ Order the MBLJ20X80-100-S (same bore/stroke/adjust)
- ✓ Same -20–80 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 MBLJ20X80-100-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X80-100-S FAQ
Yes, the MALJ20X80-100-S is discontinued. The direct replacement is the MBLJ20X80-100-S, which matches the 20 mm bore, 80 mm stroke, 100 mm adjust code, G1/8 port, and FA/LB mounting. You must upgrade your sensors from the old CS1-M / DS1-M switches to the CMSG / DMSG / EMSG family.
The 100 mm adjust code lets you trim the 80 mm stroke all the way back to zero, giving a usable 0-80 mm window. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X80-100-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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