This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ40X250-40, 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 MALJ40 Adjustable Mini Cylinder MALJ40X250-40
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-40 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 40 mm, giving a usable end-position window from 210 to 250 mm. This model is discontinued — the direct replacement is the MBLJ40X250-40.
- BoreØ40 mm
- Stroke250 mm
- Adjust window210–250 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X250-40
- 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 MALJ40 Adjustable Mini Cylinder MALJ40X250-40
The AirTAC MALJ40X250-40 is a discontinued double-acting mini cylinder with a 40 mm bore and 250 mm stroke. It features a rear screw stopper that lets you trim up to 40 mm of travel, giving a usable extension window of 210-250 mm. The direct replacement is the MBLJ40X250-40, matching the bore, stroke, adjust code, and G1/4 port.
This SKU lacks a magnet (-S), so it 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. Upgrading to the MBLJ moves you from threaded covers to a riveted rolling-packed body. If you previously used a magnet, the MBLJ requires the newer CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-40 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-40 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X250-40 |
| Bore size | Ø40 mm |
| Stroke | 250 mm |
| Adjustable window | 210 – 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 MBLJ40X250-40 carries the same ratings.
Theoretical Output Force (Ø40mm)
| 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 MBLJ40X250-40 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-40
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×250 | Nominal stroke length in mm. |
| -40 | Adjustable amount: trim the end to a 210–250 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 MALJ40 Adjustable Mini Cylinder MALJ40X250-40 Is Used
Carton Erector Arm
Dials the push stroke from 210 to 250 mm to fold varying box blanks without repositioning the cylinder.
Pallet Deflection Gate
Trims the 40 mm rear stop to set exact gate depth for diverter mechanics. The fixed rubber bumper absorbs the end impact of the 250 mm stroke.
Wood Panel Press
Adjusts the rear travel window to accommodate 40 mm panel thickness variations. The G1/4 port supplies the volume needed for the 40 mm bore.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-40 with MBLJ40X250-40
To replace this MALJ40X250-40, order the MBLJ40X250-40. Confirm your 40 mm bore, 250 mm stroke, 40 mm adjust code, G1/4 port, and PT thread. Mounting is Basic, FA, or LB only; there is no back-cover or SDB option. Because this specific SKU has no -S magnet, it cannot take a sensor. Stepping up is not available as 40 mm is the largest MALJ bore. At 250 mm stroke, minimize side-load on the 16 mm rod to prevent premature seal wear and rod bending.
Upgrade checklist
- ✓ Order the MBLJ40X250-40 (same bore/stroke/adjust)
- ✓ Same 210–250 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 MBLJ40X250-40 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-40 FAQ
Yes, the MALJ40X250-40 is discontinued. The direct replacement is the MBLJ40X250-40, which matches the 40 mm bore, 250 mm stroke, 40 mm adjust code, and G1/4 port. The MBLJ uses a riveted rolling-packed body instead of threaded covers.
The 40 mm rear adjuster creates a usable stroke window of 210-250 mm. Remember the adjuster is a travel stop, not a lock; it will not hold a load without air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ40X250-40 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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