This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X300-40-S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X300-40-S 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 MALJ40X300-40-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40-S 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-S.
- BoreØ40 mm
- Stroke300 mm
- Adjust window260–300 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X300-40-S
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40-S
The AirTAC MALJ40X300-40-S is a discontinued double-acting, single-rod adjustable-stroke mini cylinder. It features a 40 mm bore, a 300 mm stroke, and a 40 mm rear adjuster that creates a usable end-position window of 260-300 mm. It delivers 628 N push and 528 N pull force at 0.5 MPa. The exact drop-in replacement is the MBLJ40X300-40-S, matching the bore, stroke, G1/4 port, and mounting.
This -S variant uses a magnet for CS1-M or DS1-M switches; the MBLJ replacement upgrades to CMSG, DMSG, or EMSG sensors. The MALJ uses threaded covers, while the MBLJ uses a riveted rolling-packed body. The rear adjuster is a travel stop, not a lock, so it sets the end position but will not hold a load without live air. It uses a fixed rubber bumper, not an adjustable air cushion.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X300-40-S |
| 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-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 MBLJ40X300-40-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40-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. |
| -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-S Is Used
Thermoforming Press
Dial the 260-300 mm reach to set mold depth on a thermoforming press, using the 880 N push at 0.7 MPa to seat the forming plate accurately.
PCB Depaneling Saw
Fine-tune the blade plunge window on a PCB depaneling saw, trimming the 300 mm stroke by up to 40 mm to match board thickness without adding external stops.
Aluminum Extrusion Cutoff
Adjust the rear stop to set the exact cut length on an aluminum extrusion cutoff station, relying on the 16 mm hard-chrome rod to resist deflection.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40-S with MBLJ40X300-40-S
To replace the MALJ40X300-40-S, order the exact drop-in MBLJ40X300-40-S. Confirm the 40 mm bore, 300 mm stroke, 40 mm adjust code, G1/4 port, and PT thread. Mounting is FA or LB only (no back cover or SDB). Remember that the adjuster is a stop, not a lock, so add an external lock for held loads. The -S magnet changes sensor families from CS1-M/DS1-M to CMSG/DMSG/EMSG.
For sizing both ways: step down to the 32 mm bore for 402 N push at 0.5 MPa, or step up if you need more force. At 300 mm stroke, minimize side loads to prevent rod bending, as the fixed rubber bumper only softens end impact.
Upgrade checklist
- ✓ Order the MBLJ40X300-40-S (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-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X300-40-S FAQ
Yes, the MALJ40X300-40-S is discontinued. The exact drop-in replacement is the MBLJ40X300-40-S, which matches the 40 mm bore, 300 mm stroke, 40 mm adjust code, and G1/4 port. You will need to upgrade your sensors, as the MBLJ uses CMSG/DMSG/EMSG switches instead of the older CS1-M/DS1-M.
The 40 mm adjuster lets you trim the 300 mm stroke, creating a usable end-position window of 260-300 mm. 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. The adjuster is a travel stop, not a lock.
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Drop-in Upgrade
The MBLJ40X300-40-S replaces this model 1:1.
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MBLJ replacements usually ship in 3-4 days.
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