This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X250-50 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X250-50 in place of this model. 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 MALJ40X250-50 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 50 mm, giving a usable end-position window from 200 to 250 mm. This model is discontinued — the drop-in replacement is the MBLJ40X250-50.
The AirTAC MALJ40X250-50 is a discontinued double-acting single-rod cylinder with a rear adjustable stroke stopper. It has a 40mm bore and a 250mm stroke, but the 50mm adjust code lets you dial the end position back, creating a usable 200-250mm window. At 0.5 MPa it delivers 628 N push and 528 N pull force. The drop-in replacement is the MBLJ40X250-50, which keeps the same bore, stroke, adjust code, G1/4 port, and mounting.
This SKU has no magnet (-S) and therefore cannot accept a position sensor. The adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. The fixed rubber bumper softens end impact, but this is an adjustable stroke, not an adjustable cushion. Upgrading to the MBLJ moves you from threaded covers to a riveted rolling-packed body, though pressure and force ratings remain identical.
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-50 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X250-50 |
| Bore size | Ø40 mm |
| Stroke | 250 mm |
| Adjustable window | 200 – 250 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 MBLJ40X250-50 carries the same ratings.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Single-rod force, same as a standard MAL of this bore. The MBLJ40X250-50 matches these values.
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×250 | Nominal stroke length in mm. |
| -50 | Adjustable amount: trim the end to a 200–250 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.
Dialing the 250mm stroke back by 50mm lets a palletizer pusher adapt to varying box widths without adding external spacers, using the full 628 N push force at 0.5 MPa to index heavy cartons.
Set a precise 200mm bottom position on a small bending press to form sheet metal flanges accurately, relying on the fixed rubber bumper to absorb the repeated end-of-stroke impact.
Fine-tune the reach of a conveyor lane diverter arm within the 200-250mm window to sort mixed product lengths on a packaging line without swapping out the entire cylinder assembly.
To replace the MALJ40X250-50, order the exact drop-in MBLJ40X250-50. Confirm the 40mm bore, 250mm stroke, 50mm adjust code, G1/4 port, PT thread, and FA or LB mounting (there is no back cover or SDB option). Because this SKU lacks the -S magnet, it cannot take a sensor; the MBLJ upgrade uses the CMSG/DMSG/EMSG switch family if you need one. Remember the rear adjuster is a stop, not a lock.
If you need to size this cylinder both ways, step down to the 32mm bore (402 N push at 0.5 MPa) for lighter fixtures, or step up to the 40mm bore at a longer 300mm stroke for deeper reach. For any stroke at or over 300mm, mind the rod-to-side-load risk; use a guide rail to prevent rod bending on long extensions.
Upgrade checklist
Yes, the MALJ40X250-50 is discontinued. The exact drop-in replacement is the MBLJ40X250-50, which matches the 40mm bore, 250mm stroke, 50mm adjust code, G1/4 port, and mounting. The MBLJ upgrades the body to a riveted rolling-packed design from the MALJ threaded covers.
The 50mm adjust code creates a usable stroke window of 200-250mm. The full force figures are: 628 N push and 528 N pull at 0.5 MPa, 880 N push at 0.7 MPa, and a maximum of 128 kgf at 1.0 MPa. Note that this SKU has no -S magnet, so it cannot accept a position sensor.
Genuine AirTAC parts produced by AirTAC factory.
The MBLJ40X250-50 replaces this model 1:1.
MBLJ replacements usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Tell us the quantity and destination — we quote the drop-in MBLJ40X250-50 replacement with price, stock and lead time, usually within 7-8 hours.