This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X300-100 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X300-100 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).
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-100
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-100 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 100 mm, giving a usable end-position window from 200 to 300 mm. This model is discontinued — the drop-in replacement is the MBLJ40X300-100.
- BoreØ40 mm
- Stroke300 mm
- Adjust window200–300 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X300-100
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-100
The AirTAC MALJ40X300-100 is a discontinued double-acting, single-rod mini cylinder with a rear adjustable stroke stopper. The exact drop-in replacement is the MBLJ40X300-100, matching the 40mm bore, 300mm stroke, 100mm adjuster, 628N push force at 0.5 MPa, and G1/4 port. The -100 adjust code lets you trim the rear end position by up to 100mm, creating a usable stroke window of 200-300mm without external stops.
This SKU has no magnet (-S omitted), meaning 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 pressure. Upgrading to the MBLJ40X300-100 changes the switch family from CS1-M/DS1-M to CMSG/DMSG/EMSG if a sensor is later needed, and swaps the MAL threaded covers for a riveted rolling-packed body. Impact at the end of stroke is softened by a fixed rubber bumper.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-100 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-100 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X300-100 |
| Bore size | Ø40 mm |
| Stroke | 300 mm |
| Adjustable window | 200 – 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 MBLJ40X300-100 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 MBLJ40X300-100 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-100
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×300 | Nominal stroke length in mm. |
| -100 | Adjustable amount: trim the end to a 200–300 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 MALJ40X300-100 Is Used
CNC Lathe Bar Feeder
Dialing the stroke down to 200mm on a bar feeder pusher lets you feed shorter raw stock into the spindle collet without repositioning the cylinder mount, using the 628N push force to overcome stock drag.
Pallet Wrap Dispenser
Adjusting the rear stopper on a pallet stretch-wrap film carriage sets the exact 250mm feed extension to reach the pallet edge, preventing the rod from over-traveling and tearing the film.
Wood Router Ejector
Trimming the stroke by 100mm on a router parts ejector provides a 200-300mm window to clear machined profiles from the table without adding external physical stops to the fixture.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-100 with MBLJ40X300-100
To replace the MALJ40X300-100, order the MBLJ40X300-100. Confirm the 40mm bore, 300mm stroke, 100mm adjust code, G1/4 port, M12x1.25 rod-end thread, and FA or LB mounting (no back cover or SDB). Because this SKU lacks the -S magnet, it cannot take a sensor; the MBLJ upgrade supports CMSG/DMSG/EMSG switches. The adjuster sets the end position but does not hold load without air, so fit an external lock for suspended loads.
For sizing, stepping down to the 32mm bore yields 402N push at 0.5 MPa, while this 40mm bore provides 628N push. As 40mm is the largest MALJ bore, there is no larger standard size in this family. With a 300mm stroke, the 16mm carbon-steel rod is vulnerable to side-load and bending; keep the load guided to prevent premature seal wear.
Upgrade checklist
- ✓ Order the MBLJ40X300-100 (same bore/stroke/adjust)
- ✓ Same 200–300 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 MBLJ40X300-100 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-100 FAQ
Yes, the MALJ40X300-100 is discontinued. The exact drop-in replacement is the MBLJ40X300-100, which matches the 40mm bore, 300mm stroke, 100mm adjust code, 628N push force, and G1/4 port. The MBLJ upgrades the body to a riveted rolling-packed design and supports CMSG/DMSG/EMSG sensors.
The 40mm bore delivers 628N push and 528N pull at 0.5 MPa, 880N push at 0.7 MPa, and a maximum of 128 kgf at 1.0 MPa. The -100 adjust code lets you trim the rear end position by up to 100mm, giving a usable stroke window of 200-300mm. The adjuster is a travel stop, not a lock, and cannot hold a load without live air.
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The MBLJ40X300-100 replaces this model 1:1.
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