This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the drop-in replacement MBLJ40X300-10S, 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 MALJ40X300-10-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-10-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 10 mm, giving a usable end-position window from 290 to 300 mm. This model is discontinued — the drop-in replacement is the MBLJ40X300-10-S.
- BoreØ40 mm
- Stroke300 mm
- Adjust window290–300 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X300-10-S
- 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 MALJ40X300-10-S
The AirTAC MALJ40X300-10-S is a discontinued 40mm bore, double-acting single-rod mini cylinder with a 300mm stroke and a 10mm rear adjustable stopper. It gives a usable end-position window of 290-300mm. At 0.5 MPa it delivers 628N push and 528N pull force. The drop-in replacement is the MBLJ40X300-10-S, matching the G1/4 port, M12x1.25 rod thread and 128kgf max force.
The rear adjuster is a travel stop, not a lock, so it cannot hold a load without live air. This old MALJ uses threaded covers and a CS1-M/DS1-M magnet, while the MBLJ upgrade features a riveted rolling-packed body and CMSG/DMSG/EMSG sensors. A fixed rubber bumper absorbs end impacts, as there is no adjustable air cushion.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-10-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-10-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X300-10-S |
| Bore size | Ø40 mm |
| Stroke | 300 mm |
| Adjustable window | 290 – 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 MBLJ40X300-10-S 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 MBLJ40X300-10-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-10-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×300 | Nominal stroke length in mm. |
| -10 | Adjustable amount: trim the end to a 290–300 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 MALJ40X300-10-S Is Used
Printed Circuit Board Stacking
Dial in the 290-300mm reach to press multi-layer PCBs into reflow fixtures without over-traveling and cracking the delicate FR4 substrate.
Sheet Metal Flattener
Use the 628N push force to flatten bent aluminum enclosures, relying on the 10mm stop to fine-tune the final pressing depth.
Carton Sealing Plunge
Drive a folding mandrel into corrugated cartons, trimming the rear stop to compensate for varying cardboard thickness without swapping hardware.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-10-S with MBLJ40X300-10-S
To replace the MALJ40X300-10-S, order the MBLJ40X300-10-S. It is a drop-in match for the 40mm bore, 300mm stroke, 10mm adjust code, G1/4 port, PT threads, and FA/LB mounting (there is no back-cover or SDB option). Expect a sensor family change from the old CS1-M/DS1-M to the new CMSG/DMSG/EMSG switches. Remember the adjuster sets end position but does not hold load without air.
For sizing, step down to a 32mm bore for 402N push at 0.5 MPa, or step up to a larger standard body if you need more than 628N. At 300mm stroke, the 16mm carbon-steel rod is susceptible to side-load bending; use rigid guide rails to prevent rod deflection and premature seal wear.
Upgrade checklist
- ✓ Order the MBLJ40X300-10-S (same bore/stroke/adjust)
- ✓ Same 290–300 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 MBLJ40X300-10-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-10-S FAQ
Yes, the MALJ40X300-10-S is discontinued. The exact drop-in replacement is the MBLJ40X300-10-S, matching the 40mm bore, 300mm stroke, 10mm adjust code, G1/4 port, and 128kgf max force. You will only need to upgrade your sensors from the old CS1-M/DS1-M to the new CMSG/DMSG/EMSG switches.
The 10mm adjuster creates a usable stroke window of 290-300mm. The full force figures are: 628N push at 0.5 MPa, 528N pull at 0.5 MPa, 880N push at 0.7 MPa, and a maximum of 128kgf at 1.0 MPa. The adjuster is a travel stop, not a lock, and a fixed rubber bumper absorbs end impact.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Drop-in Upgrade
The MBLJ40X300-10-S 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 MALJ40X300-10-S → MBLJ40X300-10-S)
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