This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the drop-in replacement MBLJ40X300-40, 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 MALJ40X300-40
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40 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 260 to 300 mm. This model is discontinued — the drop-in replacement is the MBLJ40X300-40.
- BoreØ40 mm
- Stroke300 mm
- Adjust window260–300 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X300-40
- 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 MALJ40X300-40
The AirTAC MALJ40X300-40 is a discontinued double-acting single-rod mini cylinder. It trims up to 40mm at the rear, giving an adjustable 260-300mm usable window. Bore 40mm yields 628N push and 528N pull at 0.5MPa. The drop-in replacement is the MBLJ40X300-40.
This SKU lacks a magnet, so it cannot take a position sensor. The adjuster is a travel stop, not a lock. It uses a fixed rubber bumper and threaded covers. The MBLJ upgrade uses a riveted body and CMSG/DMSG/EMSG sensors.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X300-40 |
| Bore size | Ø40 mm |
| Stroke | 300 mm |
| Adjustable window | 260 – 300 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 MBLJ40X300-40 carries the same ratings.
Theoretical Output Force (Ø40mm)
| 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 MBLJ40X300-40 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×300 | Nominal stroke length in mm. |
| -40 | Adjustable amount: trim the end to a 260–300 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 MALJ40X300-40 Is Used
Injection Mold Ejection
Dial the 260-300mm reach to eject parts precisely from deep molds without adding external stops, using the 628N push force.
Carton Flap Folding
Fine-tune the folding arm end position on packaging lines to clear varying carton heights, relying on the fixed rubber bumper.
Pallet Push-Off
Set the exact push depth for layer separation in palletizing, using the 40mm rear adjustment to match different pallet widths.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40 with MBLJ40X300-40
Replace this with the MBLJ40X300-40. Confirm the G1/4 port, M12x1.25 rod thread, and FA/LB mounting (no back cover or SDB). The adjuster sets end position but will not hold load without air. For a 300mm stroke, prevent rod bending by managing side loads. Step down to bore 32 (402N push) or up to a larger ISO cylinder if you need more force.
Upgrade checklist
- ✓ Order the MBLJ40X300-40 (same bore/stroke/adjust)
- ✓ Same 260–300 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 MBLJ40X300-40 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40 FAQ
Yes, it is discontinued. The exact drop-in replacement is the MBLJ40X300-40, which matches the 40mm bore, 300mm stroke, 40mm adjust, G1/4 port, and mounting. The MBLJ upgrades to a riveted body and CMSG/DMSG/EMSG sensors.
It delivers 628N push and 528N pull at 0.5MPa, 880N push at 0.7MPa, and 128kgf max at 1.0MPa. The 40mm adjuster creates a 260-300mm usable window. It is a travel stop, not a lock. This no-magnet SKU cannot take a sensor.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Drop-in Upgrade
The MBLJ40X300-40 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
Request a Quote (Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40 → MBLJ40X300-40)
Tell us the quantity and destination — we quote the drop-in MBLJ40X300-40 replacement with price, stock and lead time, usually within 7-8 hours.