This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X15-20-S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X15-20-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 MALJ40X15-20-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X15-20-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 20 mm, giving a usable end-position window from -5 to 15 mm. This model is discontinued — the drop-in replacement is the MBLJ40X15-20-S.
- BoreØ40 mm
- Stroke15 mm
- Adjust window-5–15 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X15-20-S
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X15-20-S
The AirTAC MALJ40X15-20-S is a discontinued double-acting single-rod cylinder. The exact drop-in replacement is the MBLJ40X15-20-S, matching the 40mm bore, 15mm stroke, G1/4 port, and 628N push force at 0.5 MPa. The -20 adjust code lets you trim the rear position by up to 20mm, creating a usable stroke window of 0-15mm for exact depth tuning.
This -S variant uses a CS1-M or DS1-M magnet sensor, whereas the MBLJ upgrade takes CMSG/DMSG/EMSG switches. The original MALJ features threaded covers and a fixed rubber bumper; the replacement uses a riveted rolling-packed body. Remember the rear adjuster is a travel stop, not a lock, and cannot hold a load without live air.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X15-20-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X15-20-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X15-20-S |
| Bore size | Ø40 mm |
| Stroke | 15 mm |
| Adjustable window | -5 – 15 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 MBLJ40X15-20-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 MBLJ40X15-20-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X15-20-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×15 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a -5–15 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 MALJ40X15-20-S Is Used
PCB Router Depth Stop
Dial in a 5mm cutter plunge on an SMT line using the 0-15mm window. The 628N force handles the router head weight, while the fixed rubber bumper absorbs the end impact without crushing the board.
Sheet Metal Forming Pre-Stop
Set a precise 10mm reach to pre-bend light gauge enclosures before the main press. The 16mm rod and 880N output at 0.7 MPa provide rigid forming pressure without needing external stops.
Plastic Trimming Jig
Trim varying injection molded flash depths on a single fixture by turning the rear screw. The 0-15mm adjustable travel lets operators swap part families quickly without changing cylinder hardware.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X15-20-S with MBLJ40X15-20-S
To replace this MALJ40X15-20-S with the MBLJ40X15-20-S, confirm the 40mm bore, 15mm stroke, -20 adjust code, PT G1/4 port, and M12x1.25 rod thread. Mounting is Basic, FA, or LB only, as there is no back-cover or SDB option. You must also update your sensors: the MALJ -S uses CS1-M/DS1-M switches, while the MBLJ uses CMSG/DMSG/EMSG. The adjuster sets the end position but does not lock the load.
For sizing flexibility, stepping down to the 32mm bore yields 402N push at 0.5 MPa, while stepping up is not available as 40mm is the largest MALJ bore. This 40mm bore provides maximum thrust, delivering 880N at 0.7 MPa and 128kgf at 1.0 MPa.
Upgrade checklist
- ✓ Order the MBLJ40X15-20-S (same bore/stroke/adjust)
- ✓ Same -5–15 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 MBLJ40X15-20-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X15-20-S FAQ
Yes, the MALJ40X15-20-S is discontinued. The exact drop-in replacement is the MBLJ40X15-20-S, which matches the 40mm bore, 15mm stroke, 20mm adjust code, and G1/4 port. The MBLJ upgrades the body to a riveted rolling-packed design and changes the magnet switches from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The -20 adjust code allows you to trim up to 20mm at the rear, creating a usable stroke window of 0-15mm. The full force figures for this 40mm bore are: 628N push and 528N pull at 0.5 MPa, 880N push at 0.7 MPa, and a maximum of 128kgf at 1.0 MPa.
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The MBLJ40X15-20-S replaces this model 1:1.
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