This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X250-100, 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 MALJ20X250-100
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X250-100 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 150 to 250 mm. This model is discontinued — the direct replacement is the MBLJ20X250-100.
- BoreØ20 mm
- Stroke250 mm
- Adjust window150–250 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X250-100
- 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 MALJ20X250-100
The AirTAC MALJ20X250-100 is a discontinued double-acting mini cylinder with a rear adjustable stroke stopper. It provides a usable travel window of 150-250 mm by trimming up to 100 mm at the rear screw. The direct replacement is the MBLJ20X250-100, matching the 20 mm bore, G1/8 port, and 32 kgf max force.
This SKU lacks a magnet (-S) and cannot take a position sensor. The adjuster is a travel stop, not a lock, and will not hold a load without live air. It uses a fixed rubber bumper, not an adjustable air cushion. The legacy MALJ has threaded covers and a carbon-steel rod with 20 um hard chrome, whereas the MBLJ upgrade features a riveted rolling-packed body.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X250-100 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X250-100 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X250-100 |
| Bore size | Ø20 mm |
| Stroke | 250 mm |
| Adjustable window | 150 – 250 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 MBLJ20X250-100 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 MBLJ20X250-100 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X250-100
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×250 | Nominal stroke length in mm. |
| -100 | Adjustable amount: trim the end to a 150–250 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 MALJ20X250-100 Is Used
PCB Router Depth Stop
Dial the stroke from 250 mm down to 150 mm to set a precise Z-axis plunge depth for routing printed circuit boards without repositioning the cylinder block.
Dispenser Valve Timing
Trim the rear stopper by up to 100 mm to fine-tune the open position of an adhesive dispensing valve, adjusting shot volume on the fly without swapping hardware.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X250-100 with MBLJ20X250-100
To replace this MALJ20X250-100 with the MBLJ20X250-100, confirm the 20 mm bore, 250 mm stroke, 100 mm adjust code, G1/8 PT port, and basic mounting (no back cover or SDB). Because this SKU has no -S magnet, it cannot accept a sensor; if you need sensing on the MBLJ, specify the -S option to use CMSG/DMSG/EMSG switches instead of the legacy CS1-M/DS1-M. The rear adjuster sets the end position but does not lock the load.
At 250 mm stroke on an 8 mm rod, minimize side-load to prevent rod bending and seal wear.
Upgrade checklist
- ✓ Order the MBLJ20X250-100 (same bore/stroke/adjust)
- ✓ Same 150–250 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 MBLJ20X250-100 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X250-100 FAQ
Yes, the MALJ20X250-100 is discontinued. The direct replacement is the MBLJ20X250-100, which matches the 20 mm bore, 250 mm stroke, 100 mm adjust code, G1/8 port, and 32 kgf max force. The MBLJ upgrades the body to a riveted rolling-packed design from the original threaded covers.
The -100 adjust code means you can trim the rear stopper by up to 100 mm, creating a usable stroke window from 150 mm to 250 mm. The adjuster is a travel stop, not a lock, and cannot hold a load without air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X250-100 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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