This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X275-50-S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X275-50-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 MALJ40X275-50-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-50-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 50 mm, giving a usable end-position window from 225 to 275 mm. This model is discontinued — the drop-in replacement is the MBLJ40X275-50-S.
- BoreØ40 mm
- Stroke275 mm
- Adjust window225–275 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X275-50-S
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-50-S
The AirTAC MALJ40X275-50-S is a discontinued double-acting single-rod cylinder with a rear travel stop. It gives a usable extension window of 225-275 mm by trimming up to 50 mm at the rear screw. The 40 mm bore uses a G1/4 port and M12x1.25 rod-end thread, delivering 628 N push and 528 N pull at 0.5 MPa. The exact drop-in replacement is the MBLJ40X275-50-S, matching the bore, stroke, adjust code, and force.
This SKU includes a magnet (-S) for position sensing. On the MALJ it uses CS1-M or DS1-M switches, while the MBLJ upgrade moves to CMSG, DMSG, or EMSG sensors. The older MALJ has threaded covers, whereas the MBLJ uses a riveted rolling-packed body. The fixed rubber bumper softens end impact, but the adjuster is a travel stop, not a lock, and will not hold a load without live air.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-50-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-50-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X275-50-S |
| Bore size | Ø40 mm |
| Stroke | 275 mm |
| Adjustable window | 225 – 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 MBLJ40X275-50-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 MBLJ40X275-50-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-50-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. |
| -50 | Adjustable amount: trim the end to a 225–275 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 MALJ40X275-50-S Is Used
Injection Mold Ejection
Dial the 225-275 mm reach to strike a mold ejector pin precisely without repositioning the cylinder, using 628 N of push force at 0.5 MPa.
Carton Flap Folding
Fine-tune the folding arm end position on a packaging line to accommodate varying box heights, relying on the fixed rubber bumper to absorb the impact.
Pallet Stopper Gate
Set a custom 250 mm stop position for a pallet routing gate, adjusting the 50 mm window on the fly without machining new external hard stops.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-50-S with MBLJ40X275-50-S
To replace this MALJ40X275-50-S, order the MBLJ40X275-50-S. Confirm the 40 mm bore, 275 mm stroke, 50 mm adjust code, G1/4 port, PT thread, and Basic mounting (no back cover or SDB). If you need to step down, the 32 mm bore offers 402 N push at 0.5 MPa with a G1/8 port; if you need more force, the 40 mm is the largest MALJ bore available. When changing sensors, note the MBLJ replaces the CS1-M/DS1-M family with CMSG/DMSG/EMSG. At 275 mm stroke, minimize side loads to prevent rod bending, and remember the rear adjuster sets end position but does not lock the load.
Upgrade checklist
- ✓ Order the MBLJ40X275-50-S (same bore/stroke/adjust)
- ✓ Same 225–275 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 MBLJ40X275-50-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-50-S FAQ
Yes, the MALJ40X275-50-S is discontinued. The exact drop-in replacement is the MBLJ40X275-50-S, which matches the 40 mm bore, 275 mm stroke, 50 mm adjust code, G1/4 port, and 628 N push force. Note the MBLJ uses a riveted body and requires CMSG/DMSG/EMSG sensors instead of the older CS1-M/DS1-M switches.
The 40 mm bore provides 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 -50 adjust code means you can trim the rear travel stop by up to 50 mm, creating a usable extension window from 225 mm to 275 mm. The adjuster is a travel stop, not a lock, and cannot hold a load without continuous air pressure.
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Drop-in Upgrade
The MBLJ40X275-50-S replaces this model 1:1.
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MBLJ replacements usually ship in 3-4 days.
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