This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X250-75, 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 MALJ20X250-75
The AirTAC MALJ20 Adjustable Mini Cylinder MALJ20X250-75 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 175 to 250 mm. This model is discontinued — the direct replacement is the MBLJ20X250-75.
- BoreØ20 mm
- Stroke250 mm
- Adjust window175–250 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X250-75
- 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 MALJ20X250-75
The AirTAC MALJ20X250-75 is a discontinued 20mm bore, double-acting mini cylinder with a 250mm stroke and a 75mm rear adjuster. It yields a usable travel window of 175-250mm. The direct replacement is the MBLJ20X250-75, matching the force, G1/8 port, and mounting.
This SKU lacks a magnet (-S) and cannot accept a position sensor. The rear adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. It uses a fixed rubber bumper, not an adjustable cushion. The original MALJ has threaded covers and a carbon-steel rod with a 20um hard chrome plating, while the MBLJ upgrade features a riveted rolling-packed body.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X250-75 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X250-75 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X250-75 |
| Bore size | Ø20 mm |
| Stroke | 250 mm |
| Adjustable window | 175 – 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 MBLJ20X250-75 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 MBLJ20X250-75 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X250-75
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×250 | Nominal stroke length in mm. |
| -75 | Adjustable amount: trim the end to a 175–250 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 MALJ20X250-75 Is Used
Wire Straightener Guide
Set the exact exit depth for a wire straightening tool head, trimming up to 75mm at the rear stop to accommodate different wire coil thicknesses without changing the cylinder.
Dispensing Valve Probe
Fine-tune the extension reach of a pneumatic dispensing valve in an adhesive potting cell, using the 132N pull force to retract the needle cleanly from the mold cavity.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X250-75 with MBLJ20X250-75
To replace this MALJ20X250-75, order the direct replacement MBLJ20X250-75. Confirm the 20mm bore, 250mm stroke, 75mm adjust code, G1/8 PT port, M8x1.25 rod thread, and FA/LB mounting (no back cover or SDB). Since this SKU has no -S magnet, it cannot take a sensor; the MBLJ upgrade uses CMSG/DMSG/EMSG switches if needed. The adjuster is a stop, not a lock.
For sizing flexibility, stepping down to the non-existent 16mm bore is not an option for this series; the next size up is the 25mm bore, which raises the 0.5 MPa push force to 245N. At a 250mm stroke on a 20mm bore, the 8mm rod is highly susceptible to side-load bending—ensure strictly axial load alignment to prevent premature seal wear and rod damage.
Upgrade checklist
- ✓ Order the MBLJ20X250-75 (same bore/stroke/adjust)
- ✓ Same 175–250 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 MBLJ20X250-75 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X250-75 FAQ
Yes, the MALJ20X250-75 is discontinued. The MBLJ upgrades the body to a riveted rolling-packed design.
The usable stroke window is 175-250mm (250mm stroke minus the 75mm rear adjuster).
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X250-75 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
Request a Quote (Airtac MALJ20 Adjustable Mini Cylinder MALJ20X250-75 → MBLJ20X250-75)
Tell us the quantity and destination — we quote the direct MBLJ20X250-75 replacement with price, stock and lead time, usually within 7-8 hours.