This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X250-30-S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X250-30-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 MALJ40X250-30-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-30-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 30 mm, giving a usable end-position window from 220 to 250 mm. This model is discontinued — the drop-in replacement is the MBLJ40X250-30-S.
- BoreØ40 mm
- Stroke250 mm
- Adjust window220–250 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X250-30-S
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-30-S
The AirTAC MALJ40X250-30-S is a discontinued double-acting single-rod cylinder with a 40mm bore and a 250mm stroke. It provides 628N push and 528N pull at 0.5MPa. The drop-in replacement is the MBLJ40X250-30-S, matching the bore, stroke, 30mm adjust code, and G1/4 port. The rear screw lets you trim the end position by up to 30mm, creating a usable 220-250mm window without external stops.
This adjuster acts as a travel stop, not a lock, and cannot hold a load without live air. The MALJ uses a fixed rubber bumper and threaded covers, whereas the MBLJ upgrade features a riveted rolling-packed body. The -S magnet on this MALJ pairs with CS1-M / DS1-M switches, while the MBLJ replacement uses CMSG / DMSG / EMSG sensors.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-30-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-30-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X250-30-S |
| Bore size | Ø40 mm |
| Stroke | 250 mm |
| Adjustable window | 220 – 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 MBLJ40X250-30-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 MBLJ40X250-30-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-30-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. |
| -30 | Adjustable amount: trim the end to a 220–250 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 MALJ40X250-30-S Is Used
Injection Mold Ejection
Dials the exact 220-250mm ejection reach for plastic parts, using the 628N push force to clear the mold without over-traveling.
Printed Circuit Board Pusher
Fine-tunes the 30mm rear stop on a 250mm cycle to seat PCBs into test jigs gently, preventing damage to delicate traces.
Packaging Flap Tucking
Adjusts the end position on the fly to tuck carton flaps of varying depths, relying on the fixed rubber bumper to soften impact.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-30-S with MBLJ40X250-30-S
To replace this MALJ40X250-30-S, order the exact MBLJ40X250-30-S drop-in. Confirm the 40mm bore, 250mm stroke, 30mm adjust code, PT G1/4 port, and M12x1.25 rod thread. Mounting is Basic, FA, or LB only; there is no back-cover or SDB option. Remember the rear adjuster sets the end position but does not lock the load. If you need to size either way: stepping down to a 32mm bore yields 402N push at 0.5MPa, while stepping up to a 50mm bore gives 981N push. At 250mm stroke, watch for rod-bending side loads on the 16mm rod.
Upgrade checklist
- ✓ Order the MBLJ40X250-30-S (same bore/stroke/adjust)
- ✓ Same 220–250 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 MBLJ40X250-30-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-30-S FAQ
Yes, the MALJ40X250-30-S is discontinued. The exact drop-in replacement is the MBLJ40X250-30-S. It matches the 40mm bore, 250mm stroke, 30mm 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 -30 adjust code means you can trim up to 30mm at the rear, giving a usable stroke window of 220-250mm. The full force figures are: 628N push at 0.5MPa, 528N pull at 0.5MPa, 880N push at 0.7MPa, and a maximum of 128kgf at 1.0MPa. The adjuster is a travel stop, not a lock.
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Drop-in Upgrade
The MBLJ40X250-30-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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