This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X100-50S, 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 MALJ20X100-50-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-50-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 50 to 100 mm. This model is discontinued — the direct replacement is the MBLJ20X100-50-S.
- BoreØ20 mm
- Stroke100 mm
- Adjust window50–100 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X100-50-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 MALJ20X100-50-S
The AirTAC MALJ20X100-50-S is a discontinued double-acting mini cylinder with a 50mm rear adjustable stroke stopper. It provides a usable stroke window of 50-100mm, allowing you to dial in the exact end position without adding external stops.
The direct replacement is the MBLJ20X100-50-S, which matches the bore, stroke, G1/8 port, and mounting. The upgrade shifts from threaded covers to a riveted rolling-packed body. Because this is an -S magnet SKU, the older CS1-M / DS1-M switches are replaced by CMSG / DMSG / EMSG sensors on the MBLJ. The adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-50-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-50-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X100-50-S |
| Bore size | Ø20 mm |
| Stroke | 100 mm |
| Adjustable window | 50 – 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 MBLJ20X100-50-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 MBLJ20X100-50-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-50-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×100 | Nominal stroke length in mm. |
| -50 | Adjustable amount: trim the end to a 50–100 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 MALJ20X100-50-S Is Used
Small Part Ejector
Fine-tune the ejection reach on a pick-and-place nozzle changer, trimming the 100mm stroke back exactly where the 8mm rod meets the carrier without adding external spacers.
Micro-Clamp Actuator
Adjust the clamping reach on a delicate electronics test fixture, ensuring the 132N pull force retracts the probe safely away from the board before unloading.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-50-S with MBLJ20X100-50-S
To replace the MALJ20X100-50-S, order the MBLJ20X100-50-S. Confirm the 20mm bore, 100mm stroke, 50mm adjust code, G1/8 port, and M8x1.25 rod thread. Mounting is FA or LB only; there is no back cover or SDB option. Remember the rear adjuster is a stop, not a lock, so add an external pneumatic lock if you need to hold a load.
At 100mm stroke on a 20mm bore, keep the rod side-load minimized to prevent bending the 8mm rod.
Upgrade checklist
- ✓ Order the MBLJ20X100-50-S (same bore/stroke/adjust)
- ✓ Same 50–100 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 MBLJ20X100-50-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-50-S FAQ
Yes, the MALJ20X100-50-S is discontinued. The direct replacement is the MBLJ20X100-50-S, which matches the 20mm bore, 100mm stroke, 50mm adjust code, G1/8 port, and mounting. The MBLJ upgrades the body from threaded covers to a riveted rolling-packed design, and the -S magnet switches from CS1-M / DS1-M to CMSG / DMSG / EMSG sensors.
The usable stroke window is 50-100mm, set by trimming up to 50mm at the rear. The fixed rubber bumper softens end impact, but the adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X100-50-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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