This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X500-75-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 MALJ20X500-75-S
The AirTAC MALJ20 Adjustable Mini Cylinder MALJ20X500-75-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 75 mm, giving a usable end-position window from 425 to 500 mm. This model is discontinued — the direct replacement is the MBLJ20X500-75-S.
- BoreØ20 mm
- Stroke500 mm
- Adjust window425–500 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X500-75-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 MALJ20X500-75-S
The AirTAC MALJ20X500-75-S is a discontinued double-acting, double-rod adjustable-stroke mini cylinder. It features a 20mm bore, a 500mm stroke, and a 75mm rear adjuster, providing a usable end-position window of 425-500mm. The direct replacement is the MBLJ20X500-75-S, which matches the bore, stroke, force, and G1/8 port.
This non-standard 500mm stroke exceeds the 300mm maximum for this bore, making it a made-to-order item requiring careful rod-bending and side-load management. The rear adjuster functions as a travel stop to fine-tune reach without external stops, but it is not a lock and will not hold a load without live air. The fixed rubber bumper softens end impacts, and the original threaded covers and CS1-M/DS1-M sensors are upgraded to a riveted body and CMSG/DMSG/EMSG sensors in the MBLJ series.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-75-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-75-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X500-75-S |
| Bore size | Ø20 mm |
| Stroke | 500 mm |
| Adjustable window | 425 – 500 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 MBLJ20X500-75-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 MBLJ20X500-75-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-75-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×500 | Nominal stroke length in mm. |
| -75 | Adjustable amount: trim the end to a 425–500 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 MALJ20X500-75-S Is Used
Long-Reach Wire Wiper
Sets the precise wipe distance on a 500mm-stroke wire cleaning station, ensuring the bumper absorbs the end impact without side-loading the rod.
Deep Drawer Ejector
Adjusts the ejection window on an electronics assembly drawer, tuning the 75mm trim to safely eject parts without adding external physical stops.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-75-S with MBLJ20X500-75-S
To replace the MALJ20X500-75-S, order the MBLJ20X500-75-S direct. Confirm the 20mm bore, 500mm stroke, 75mm adjust code, G1/8 port, M8x1.25 rod thread, and PT thread form. Mounting is FA or LB only, as there is no back cover or SDB option. The -S magnet on your original MALJ used CS1-M/DS1-M switches; the MBLJ replacement requires CMSG/DMSG/EMSG sensors. Remember the rear adjuster is a travel stop, not a load lock.
Upgrade checklist
- ✓ Order the MBLJ20X500-75-S (same bore/stroke/adjust)
- ✓ Same 425–500 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 MBLJ20X500-75-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-75-S FAQ
Yes, the MALJ20X500-75-S is discontinued. The direct replacement is the MBLJ20X500-75-S, which matches the 20mm bore, 500mm stroke, 75mm adjuster, force, and G1/8 port. The MBLJ upgrades the body to a riveted rolling-packed design and changes the -S magnet sensors from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The 75mm rear adjuster allows you to trim the 500mm stroke down to a 425mm minimum window. Note that the adjuster is a travel stop, not a lock, and the 500mm stroke is non-standard, exceeding the 300mm maximum for this bore.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X500-75-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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