This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ40X15-20, 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).
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X15-20 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 20 mm, giving a usable end-position window from -5 to 15 mm. This model is discontinued — the direct replacement is the MBLJ40X15-20.
The AirTAC MALJ40X15-20 is a discontinued double-acting, double-rod mini cylinder with a 40mm bore and 15mm stroke. It features a rear adjustable travel stop that lets you trim up to 20mm, giving a usable end-position window of 0-15mm. The direct replacement is the MBLJ40X15-20, matching the bore, stroke, force, and G1/4 port.
Two critical engineering details define this SKU. First, the rear adjuster is a travel stop, not a mechanical lock; it sets the end position but cannot hold a load without live air pressure. Second, because this specific SKU lacks the -S magnet code, it cannot accept a position sensor. The original MALJ uses threaded covers and the older CS1-M/DS1-M switches, while the MBLJ upgrade features a riveted rolling-packed body and modern CMSG/DMSG/EMSG sensors.
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X15-20 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X15-20 |
| Bore size | Ø40 mm |
| Stroke | 15 mm |
| Adjustable window | -5 – 15 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 500 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 MBLJ40X15-20 carries the same ratings.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 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 MBLJ40X15-20 matches these values.
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×15 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a -5–15 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.
Dials the exact 0-15mm cutting depth on a PCB depaneling router.
Sets a precise bottom position for pressing header pins into plastic molds. The 528N pull force retracts the tooling cleanly, and the 20mm adjuster trims the 15mm stroke to prevent over-driving the fragile pins.
Actuates a short-stroke clamping jaw in an electronics assembly fixture. The fixed rubber bumper softens the impact at the 15mm end position, protecting delicate ceramic substrates from shock loads.
To replace the MALJ40X15-20, order the exact direct replacement MBLJ40X15-20. Confirm the 40mm bore, 15mm stroke, 20mm adjust code, G1/4 port, and PT thread form. Mounting is limited to FA or LB (no back cover or SDB). Since this SKU lacks a magnet, it cannot hold a sensor; the MBLJ upgrade moves to CMSG/DMSG/EMSG switches. Remember the adjuster is a stop, not a lock.
The 40mm bore yields a maximum force of 128kgf at 1.0MPa.
Upgrade checklist
Yes, the MALJ40X15-20 is discontinued. The MBLJ upgrades the body to a riveted rolling-packed design and uses CMSG/DMSG/EMSG sensors.
The 20mm adjust code lets you trim up to 20mm at the rear, yielding a usable stroke window of 0-15mm. The adjuster is a travel stop, not a lock.
Genuine AirTAC parts produced by AirTAC factory.
The MBLJ40X15-20 replaces this model 1:1.
MBLJ replacements are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Tell us the quantity and destination — we quote the direct MBLJ40X15-20 replacement with price, stock and lead time, usually within 7-8 hours.