This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X125-50-S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X125-50-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 MALJ40X125-50-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-50-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 75 to 125 mm. This model is discontinued — the drop-in replacement is the MBLJ40X125-50-S.
- BoreØ40 mm
- Stroke125 mm
- Adjust window75–125 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X125-50-S
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-50-S
The AirTAC MALJ40X125-50-S is a discontinued double-acting single-rod cylinder with a 40mm bore and 125mm stroke. It features a rear screw stopper that trims up to 50mm, creating a usable stroke window of 75-125mm. It delivers 628N push and 528N pull at 0.5MPa. The exact drop-in replacement is the MBLJ40X125-50-S, matching the bore, stroke, adjust code, G1/4 port, and force.
This -S variant includes a magnet for CS1-M/DS1-M switches; the MBLJ upgrade shifts to CMSG/DMSG/EMSG sensors and swaps the original threaded covers for a riveted rolling-packed body. The rear adjuster acts as a travel stop to fine-tune depth without external bolts, but it will not hold a load without live air. Impact is softened by a fixed rubber bumper, not an adjustable air cushion.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-50-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-50-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X125-50-S |
| Bore size | Ø40 mm |
| Stroke | 125 mm |
| Adjustable window | 75 – 125 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 MBLJ40X125-50-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 MBLJ40X125-50-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-50-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×125 | Nominal stroke length in mm. |
| -50 | Adjustable amount: trim the end to a 75–125 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 MALJ40X125-50-S Is Used
Stamping Press Feed
Dial in the 75-125mm pusher reach on a coil feeding line to hit varied material widths without repositioning hard stops, using the 628N force to advance strip stock reliably.
Pallet Wrapper Seal Head
Trim the cylinder end position to plunge the film seal jaw precisely onto different pallet heights, relying on the fixed rubber bumper to absorb the 880N end impact at 0.7MPa.
Wood Router Clamp
Adjust the rear stopper to set exact clamping depth for varying panel thicknesses, locking the workpiece in place while the router cuts, without needing live air to maintain the set position.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-50-S with MBLJ40X125-50-S
To replace this MALJ40X125-50-S with the MBLJ40X125-50-S, confirm the 40mm bore, 125mm stroke, 50mm adjust code, G1/4 PT port, and FA/LB mounting (no back cover or SDB). Swap the CS1-M/DS1-M sensors for CMSG/DMSG/EMSG switches. Remember the adjuster is a stop, not a lock. If sizing either way, step down to a 32mm bore (402N push at 0.5MPa) for lighter loads, or step up to a larger ISO 15552 cylinder if your frame allows.
Upgrade checklist
- ✓ Order the MBLJ40X125-50-S (same bore/stroke/adjust)
- ✓ Same 75–125 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 MBLJ40X125-50-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X125-50-S FAQ
Yes, the MALJ40X125-50-S is discontinued. The exact drop-in replacement is the MBLJ40X125-50-S, which matches the 40mm bore, 125mm stroke, 50mm adjust code, G1/4 port, and mounting. You must update your sensors from CS1-M/DS1-M to CMSG/DMSG/EMSG, as the new body uses a riveted rolling-packed design instead of threaded covers.
The 40mm bore provides 628N push and 528N pull at 0.5MPa, 880N push at 0.7MPa, and a maximum of 128kgf at 1.0MPa. The -50 adjust code lets you trim the 125mm stroke at the rear, creating a usable stroke window of 75-125mm. This rear screw acts as a travel stop, not a lock, so it will not hold a load without air pressure.
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The MBLJ40X125-50-S replaces this model 1:1.
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MBLJ replacements usually ship in 3-4 days.
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