This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X500-10-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 MALJ20X500-10-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-10-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 490 to 500 mm. This model is discontinued — the direct replacement is the MBLJ20X500-10-S.
- BoreØ20 mm
- Stroke500 mm
- Adjust window490–500 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X500-10-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 MALJ20X500-10-S
The AirTAC MALJ20X500-10-S is a discontinued double-acting mini cylinder with a 10mm rear adjustable stroke stopper, yielding a usable 490-500mm window. The direct replacement is the MBLJ20X500-10-S. This 500mm stroke exceeds the 20mm bore's 300mm standard limit, making it a non-standard, made-to-order length requiring careful rod side-load management.
The rear adjuster sets the end position but is a travel stop, not a lock, so it will not hold a load without live air. Impact is softened by a fixed rubber bumper, as there is no air cushion. The original threaded covers and CS1-M/DS1-M sensors are upgraded in the MBLJ to a riveted rolling-packed body with CMSG/DMSG/EMSG switches.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-10-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-10-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X500-10-S |
| Bore size | Ø20 mm |
| Stroke | 500 mm |
| Adjustable window | 490 – 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 MBLJ20X500-10-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 MBLJ20X500-10-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-10-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. |
| -10 | Adjustable amount: trim the end to a 490–500 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 MALJ20X500-10-S Is Used
Thin-Film Reel Indexing
Fine-tunes the stopper depth on a pick-and-place reel feeder, trimming 10mm at the rear to prevent over-travel on delicate film strips.
Light-Part Ejection Stroke
Adjusts the end position for a plastic mold ejector, ensuring the 500mm rod retracts fully without stressing the 8mm rod under side-load.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-10-S with MBLJ20X500-10-S
To replace this MALJ20X500-10-S, specify the MBLJ20X500-10-S to match the 20mm bore, 500mm stroke, 10mm adjust code, G1/8 port, PT threads, and FA/LB mounting (no back cover or SDB). The -S magnet upgrades from CS1-M/DS1-M to CMSG/DMSG/EMSG sensors. Remember the adjuster is a stop, not a lock.
Because 500mm exceeds the 300mm standard, support the rod to prevent bending and side-load damage.
Upgrade checklist
- ✓ Order the MBLJ20X500-10-S (same bore/stroke/adjust)
- ✓ Same 490–500 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 MBLJ20X500-10-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-10-S FAQ
Yes, the MALJ20X500-10-S is discontinued. The direct replacement is the MBLJ20X500-10-S, matching the 20mm bore, 500mm stroke, 10mm adjust code, G1/8 port, and FA/LB mounting. The MBLJ upgrades the threaded covers to a riveted body and the -S magnet switches from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The -10 adjust code creates a usable stroke window of 490-500mm. The adjuster is a travel stop, not a lock, and will not hold a load without live air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X500-10-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
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