This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X275-40-S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X275-40-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 MALJ40X275-40-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-40-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 235 to 275 mm. This model is discontinued — the drop-in replacement is the MBLJ40X275-40-S.
- BoreØ40 mm
- Stroke275 mm
- Adjust window235–275 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X275-40-S
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-40-S
The AirTAC MALJ40X275-40-S is a discontinued double-acting adjustable-stroke mini cylinder. It features a 40mm bore, a 275mm stroke, and a 40mm rear adjuster, providing a usable end-position window of 235-275mm. It delivers 628N push and 528N pull force at 0.5MPa. The exact drop-in replacement is the MBLJ40X275-40-S, matching the bore, stroke, force, G1/4 port, and mounting.
This -S magnet model originally used CS1-M/DS1-M switches, while the MBLJ replacement upgrades to CMSG/DMSG/EMSG sensors. The original MALJ uses threaded covers, whereas the MBLJ features a riveted rolling-packed body. The rear adjuster is a travel stop, not a lock; it cannot hold a load without live air. End impact is softened by a fixed rubber bumper, not an adjustable air cushion.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-40-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-40-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X275-40-S |
| Bore size | Ø40 mm |
| Stroke | 275 mm |
| Adjustable window | 235 – 275 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 MBLJ40X275-40-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 MBLJ40X275-40-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-40-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×275 | Nominal stroke length in mm. |
| -40 | Adjustable amount: trim the end to a 235–275 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 MALJ40X275-40-S Is Used
Automated Welding Torch Positioning
Dial in the 235-275mm reach on a robotic MIG welder. The 880N push force at 0.7MPa firmly sets the torch standoff without re-machining the cell, while the fixed bumper absorbs the sudden end impact.
Palletizer Depth Stop Tuning
Adjust the 40mm travel window on a packaging line to handle varying pallet depths. The G1/4 port provides the high flow needed to cycle the 128kgf capacity rod rapidly for heavy corrugated box placement.
Long-Stroke Part Ejection
Extract heavy castings from a molding press. The 275mm stroke provides deep reach, but the 16mm carbon-steel rod requires a dedicated external guide rail to prevent binding and side-load buckling during ejection.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-40-S with MBLJ40X275-40-S
To replace the MALJ40X275-40-S with the MBLJ40X275-40-S, confirm the 40mm bore, 275mm stroke, 40mm adjust code, G1/4 port, PT thread, and FA/LB mounting (no back cover or SDB). Remember the adjuster sets the end position but does not hold the load. The -S magnet requires a sensor family change from CS1-M/DS1-M to CMSG/DMSG/EMSG.
For sizing, stepping down to the 32mm bore yields 402N push at 0.5MPa, while stepping up is not available as 40mm is the largest MALJ bore. At 275mm stroke, the 16mm rod is highly susceptible to side-load and bending; ensure rigid guidance to prevent premature seal wear and rod damage.
Upgrade checklist
- ✓ Order the MBLJ40X275-40-S (same bore/stroke/adjust)
- ✓ Same 235–275 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 MBLJ40X275-40-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-40-S FAQ
Yes, the MALJ40X275-40-S is discontinued. The exact drop-in replacement is the MBLJ40X275-40-S, which matches the 40mm bore, 275mm stroke, 40mm adjuster, G1/4 port, and force. You must upgrade your sensors from the old CS1-M/DS1-M to the new CMSG/DMSG/EMSG switches.
It delivers 628N push and 528N pull at 0.5MPa, 880N push at 0.7MPa, and a maximum of 128kgf at 1.0MPa. The -40 code allows you to trim up to 40mm at the rear, creating a usable stroke window of 235-275mm. The adjuster is a travel stop, not a lock.
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Drop-in Upgrade
The MBLJ40X275-40-S replaces this model 1:1.
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MBLJ replacements usually ship in 3-4 days.
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