This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X40-10S, 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 MALJ20X40-10-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X40-10-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 10 mm, giving a usable end-position window from 30 to 40 mm. This model is discontinued — the direct replacement is the MBLJ20X40-10-S.
- BoreØ20 mm
- Stroke40 mm
- Adjust window30–40 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X40-10-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 MALJ20X40-10-S
The AirTAC MALJ20X40-10-S is a discontinued double-acting double-rod mini cylinder with a 20mm bore and 40mm stroke. It provides a usable stroke window of 30-40mm via its 10mm rear adjuster. The direct replacement is the MBLJ20X40-10-S, matching bore, stroke, and port.
This -S model includes a magnet for the older CS1-M or DS1-M switches. The MBLJ upgrade shifts to CMSG/DMSG/EMSG sensors and uses a riveted rolling-packed body instead of the original threaded covers. The rear adjuster is a travel stop, not a lock, so it cannot hold a load without live air. A fixed rubber bumper softens end impact.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X40-10-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X40-10-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X40-10-S |
| Bore size | Ø20 mm |
| Stroke | 40 mm |
| Adjustable window | 30 – 40 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 MBLJ20X40-10-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 MBLJ20X40-10-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X40-10-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×40 | Nominal stroke length in mm. |
| -10 | Adjustable amount: trim the end to a 30–40 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 MALJ20X40-10-S Is Used
Micro-Clamp Depth Setter
Trim the 10mm rear stopper to set an exact 35mm clamping depth on a small pneumatic vise, allowing rapid tool changeovers for different 3D-printed housing widths.
Light Wire Termination Press
Use the 132N pull force and fixed rubber bumper to softly seat terminal pins into a connector block, adjusting the stroke window to prevent over-driving delicate 26AWG copper leads.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X40-10-S with MBLJ20X40-10-S
To replace the MALJ20X40-10-S, order the exact direct replacement MBLJ20X40-10-S. Confirm the 20mm bore, 40mm stroke, 10mm adjust code, G1/8 port, M8x1.25 rod thread, and PT thread form. Mounting is Basic, FA, or LB only; there is no back cover or SDB option. The -S magnet changes sensor families from CS1-M/DS1-M to CMSG/DMSG/EMSG.
For sizing, stepping down is not an option as 20mm is the smallest available bore. Remember the rear adjuster sets the end position but does not lock the load.
Upgrade checklist
- ✓ Order the MBLJ20X40-10-S (same bore/stroke/adjust)
- ✓ Same 30–40 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 MBLJ20X40-10-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X40-10-S FAQ
Yes, the MALJ20X40-10-S is discontinued. The direct replacement is the MBLJ20X40-10-S, which shares the same 20mm bore, 40mm stroke, 10mm adjust code, G1/8 port, and force ratings. The MBLJ upgrade features a riveted rolling-packed body and uses CMSG/DMSG/EMSG sensors instead of the older CS1-M/DS1-M switches.
The 10mm adjuster lets you trim the rear travel stop, creating a usable stroke window from 30mm up to 40mm. This adjuster is a travel stop, not a lock; it will not hold a load without live air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X40-10-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 MALJ20X40-10-S → MBLJ20X40-10-S)
Tell us the quantity and destination — we quote the direct MBLJ20X40-10-S replacement with price, stock and lead time, usually within 7-8 hours.