This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X250-50-S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X250-50-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 MALJ40X250-50-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-50-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 200 to 250 mm. This model is discontinued — the drop-in replacement is the MBLJ40X250-50-S.
- BoreØ40 mm
- Stroke250 mm
- Adjust window200–250 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X250-50-S
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-50-S
The AirTAC MALJ40X250-50-S is a discontinued 40mm bore, double-acting adjustable-stroke mini cylinder. A rear stopper screw trims up to 50mm, yielding a usable 200-250mm stroke window. It delivers 628N push and 528N pull at 0.5MPa. The exact drop-in replacement is the MBLJ40X250-50-S, matching bore, stroke, port and force.
This -S magnet model uses older CS1-M/DS1-M switches, whereas the MBLJ uses CMSG/DMSG/EMSG sensors. The MALJ has threaded covers and a fixed rubber bumper; the MBLJ upgrades to a riveted rolling-packed body. The adjuster sets the end position but is a travel stop, not a lock, meaning it will not hold a load without live air.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-50-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-50-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X250-50-S |
| Bore size | Ø40 mm |
| Stroke | 250 mm |
| Adjustable window | 200 – 250 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 MBLJ40X250-50-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 MBLJ40X250-50-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-50-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×250 | Nominal stroke length in mm. |
| -50 | Adjustable amount: trim the end to a 200–250 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 MALJ40X250-50-S Is Used
Injection Mould Ejection
Dial the 200-250mm window to strike moulds precisely. The 628N push at 0.5MPa reliably ejects plastic parts without overtravel.
CNC Door Indexing
Set the exact reach for machine tool safety doors. The 40mm bore provides high force, while the stopper dials the exact open position.
Packaging Flap Folding
Tune the folding arm depth for varying carton sizes. The fixed rubber bumper absorbs the end impact, while the stop sets the crease depth.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-50-S with MBLJ40X250-50-S
To replace this MALJ40X250-50-S, order the exact drop-in MBLJ40X250-50-S. Confirm the 40mm bore, 250mm stroke, 50mm adjust code, G1/4 port, PT thread, and FA/LB mounting (no back cover or SDB). The -S magnet means you must switch from CS1-M/DS1-M to CMSG/DMSG/EMSG sensors. The adjuster is a stop, not a lock. For sizing, stepping down to the 32mm bore yields 402N push at 0.5MPa, while stepping up to the 40mm bore is the maximum mini size available. At 250mm stroke, avoid side-load to prevent rod bending.
Upgrade checklist
- ✓ Order the MBLJ40X250-50-S (same bore/stroke/adjust)
- ✓ Same 200–250 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 MBLJ40X250-50-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-50-S FAQ
Yes, the MALJ40X250-50-S is discontinued. The exact drop-in replacement is the MBLJ40X250-50-S, which matches the 40mm bore, 250mm stroke, 50mm adjust code, and G1/4 port. You must upgrade your sensors from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The usable stroke window is 200-250mm. The full force set: push 628N and pull 528N at 0.5MPa, push 880N at 0.7MPa, and a maximum force of 128kgf at 1.0MPa. The 50mm adjuster is a travel stop, not a lock.
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Drop-in Upgrade
The MBLJ40X250-50-S replaces this model 1:1.
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MBLJ replacements usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
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