This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X250-100S, 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-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X250-100-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 150 to 250 mm. This model is discontinued — the direct replacement is the MBLJ20X250-100-S.
- BoreØ20 mm
- Stroke250 mm
- Adjust window150–250 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X250-100-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 MALJ20X250-100-S
The AirTAC MALJ20X250-100-S is a discontinued double-acting, double-rod mini cylinder with a 20 mm bore and 250 mm stroke. A rear screw lets you trim up to 100 mm, giving a usable 150-250 mm end-position window without external stops. The direct replacement is the MBLJ20X250-100-S, matching the bore, stroke, adjust code, and G1/8 port.
The adjuster is a travel stop, not a lock; it sets the end position but cannot hold a load without live air. A fixed rubber bumper softens end impact, but do not confuse this with an adjustable cushion. This -S SKU has a magnet for CS1-M or DS1-M switches; the MBLJ upgrade shifts to CMSG, DMSG, or EMSG sensors. The MALJ uses threaded covers, while the MBLJ features a riveted rolling-packed body for higher structural integrity.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X250-100-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X250-100-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X250-100-S |
| 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-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 MBLJ20X250-100-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X250-100-S
| 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-S Is Used
PCB Depaneling Saw Feed
Dialing the 150-250 mm window lets an 8 mm rod push a depaneling blade carriage precisely through a populated circuit board without adding external physical stops.
Connector Pin Insertion Depth
Fine-tune the insertion depth of connector pins into housings by adjusting the rear stopper, ensuring the 132 N pull force retracts the tooling cleanly without overdriving the pin.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X250-100-S with MBLJ20X250-100-S
To replace the MALJ20X250-100-S, order the exact direct replacement MBLJ20X250-100-S. Confirm the 20 mm bore, 250 mm stroke, 100 mm adjust code, G1/8 port, PT thread, and FA or LB mounting (there is no back-cover or SDB option). The -S magnet means you must switch from the older CS1-M/DS1-M switches to the CMSG/DMSG/EMSG family. Remember the adjuster is a stop, not a lock. At 250 mm stroke, mind rod side-load and bending on this 8 mm rod.
Upgrade checklist
- ✓ Order the MBLJ20X250-100-S (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-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X250-100-S FAQ
Yes, the MALJ20X250-100-S is discontinued. The direct replacement is the MBLJ20X250-100-S, which matches the 20 mm bore, 250 mm stroke, 100 mm adjust code, G1/8 port, and FA/LB mounting. You must upgrade your sensors from the old CS1-M/DS1-M to the CMSG/DMSG/EMSG family.
The 100 mm adjust code is a rear travel stop that lets you shorten the end position, creating a usable 150-250 mm stroke window. It does not lock the load without live air.
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Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X250-100-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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