This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X20-20S, 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 MALJ20X20-20-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X20-20-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 20 mm, giving a usable end-position window from 0 to 20 mm. This model is discontinued — the direct replacement is the MBLJ20X20-20-S.
- BoreØ20 mm
- Stroke20 mm
- Adjust window0–20 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X20-20-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 MALJ20X20-20-S
The AirTAC MALJ20X20-20-S is a discontinued double-acting mini cylinder with a 20mm rear adjuster, giving a usable stroke window of 0-20mm. The direct replacement is the MBLJ20X20-20-S, matching the 20mm bore, G1/8 port, and 32 kgf max force.
This -S SKU uses the older CS1-M/DS1-M reed switches, whereas the MBLJ upgrade uses CMSG/DMSG/EMSG sensors. The MALJ features threaded covers, while the MBLJ replacement uses a riveted rolling-packed body. The rear adjuster is a travel stop, not a lock; it cannot hold a load without live air. A fixed rubber bumper softens end impacts.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X20-20-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X20-20-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X20-20-S |
| Bore size | Ø20 mm |
| Stroke | 20 mm |
| Adjustable window | 0 – 20 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 MBLJ20X20-20-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 MBLJ20X20-20-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X20-20-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×20 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a 0–20 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 MALJ20X20-20-S Is Used
Pick-and-Place Z-Axis
Fine-tune the vertical drop distance for electronic component placement, using the rear stopper to prevent over-travel on delicate microchips.
Small Part Ejection
Adjust the push-out reach on a stamping die ejector, relying on the 132N pull force to retract the 8mm rod cleanly within a 20mm cycle.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X20-20-S with MBLJ20X20-20-S
To replace this MALJ20X20-20-S, order the MBLJ20X20-20-S. Confirm the 20mm bore, 0-20mm adjustable stroke window, G1/8 port, and PT thread. Mounting is FA or LB only; there is no back-cover or SDB option. Because this is a -S magnet SKU, swap your CS1-M/DS1-M sensors for CMSG/DMSG/EMSG switches. The adjuster sets the end position but does not lock the load.
For sizing, the next size down is unavailable as 20mm is the minimum bore. The 8mm rod with hard chrome plating handles standard loads, but use a guide for any lateral stress.
Upgrade checklist
- ✓ Order the MBLJ20X20-20-S (same bore/stroke/adjust)
- ✓ Same 0–20 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 MBLJ20X20-20-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X20-20-S FAQ
Yes, the MALJ20X20-20-S is discontinued. The direct replacement is the MBLJ20X20-20-S, which matches the 20mm bore, 20mm stroke, 20mm adjuster, G1/8 port, and 32 kgf max force. You only need to upgrade your sensors from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The 20mm adjuster lets you trim the end position, creating a usable stroke window from 0 to 20mm. It acts as a travel stop and does not hold the load without air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X20-20-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
Request a Quote (Airtac MALJ20 Adjustable Mini Cylinder MALJ20X20-20-S → MBLJ20X20-20-S)
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