This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X500-100-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 MALJ20X500-100-S
The AirTAC MALJ20 Adjustable Mini Cylinder MALJ20X500-100-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 100 mm, giving a usable end-position window from 400 to 500 mm. This model is discontinued — the direct replacement is the MBLJ20X500-100-S.
- BoreØ20 mm
- Stroke500 mm
- Adjust window400–500 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X500-100-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 MALJ20X500-100-S
The AirTAC MALJ20X500-100-S is a discontinued double-acting, double-rod mini cylinder with a rear adjustable stroke. The -100 code means you can trim up to 100 mm at the rear, giving a usable extension window of 400-500 mm. The direct replacement is the MBLJ20X500-100-S, matching the bore, stroke, adjuster, and G1/8 port.
This 500 mm stroke exceeds the 300 mm standard for a 20 mm bore, making it a non-standard, made-to-order part. The rear adjuster is a travel stop, not a lock; it sets the end position but cannot hold a load without live air. The fixed rubber bumper softens end impact, while the -S magnet uses older CS1-M / DS1-M switches. The MBLJ upgrade replaces the threaded covers with a riveted rolling-packed body and moves sensors to the CMSG / DMSG / EMSG family.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-100-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-100-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X500-100-S |
| Bore size | Ø20 mm |
| Stroke | 500 mm |
| Adjustable window | 400 – 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 MBLJ20X500-100-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 MBLJ20X500-100-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-100-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. |
| -100 | Adjustable amount: trim the end to a 400–500 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 MALJ20X500-100-S Is Used
Long-Reach Textile Loom Tenter
Fine-tune the 500 mm extension on a tenter frame to tension delicate fabric webs, trimming 100 mm at the rear to perfectly match the loom geometry without adding external stops.
Thin-Film Winder Nip Adjustment
Use the adjustable end position to set the nip gap on a film winder, relying on the fixed rubber bumper to soften the impact of the 8 mm rod at high cycle speeds.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-100-S with MBLJ20X500-100-S
To replace this MALJ20X500-100-S, order the MBLJ20X500-100-S. Confirm the 20 mm bore, 500 mm stroke, 100 mm adjust code, G1/8 port, PT thread, and FA or LB mounting (no back cover or SDB). Because this is a 500 mm stroke on an 8 mm rod, be aware of rod bending under side loads; guide the load externally. Remember the adjuster is a stop, not a lock, for holding loads.
Upgrade checklist
- ✓ Order the MBLJ20X500-100-S (same bore/stroke/adjust)
- ✓ Same 400–500 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 MBLJ20X500-100-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X500-100-S FAQ
Yes, the MALJ20X500-100-S is discontinued. The direct replacement is the MBLJ20X500-100-S, which matches the 20 mm bore, 500 mm stroke, 100 mm adjust code, and G1/8 port. You will need to upgrade your sensors: the old MAL -S magnet used CS1-M / DS1-M switches, while the new MBL uses CMSG / DMSG / EMSG switches.
The -100 adjust code lets you trim the rear position by up to 100 mm, creating a usable stroke window of 400-500 mm. The adjuster acts as a travel stop, not a lock, so it will not hold a load without live air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X500-100-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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