This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X250-30 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X250-30 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
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-30 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.
- BoreØ40 mm
- Stroke250 mm
- Adjust window220–250 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X250-30
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-30
The AirTAC MALJ40X250-30 is a discontinued adjustable-stroke mini cylinder. As a double-acting single rod actuator with a 40mm bore and 250mm stroke, it provides 628N push and 528N pull at 0.5MPa. The -30 code means the rear stopper trims up to 30mm, giving a usable 220-250mm end-position window without external stops. It uses a fixed rubber bumper, not an adjustable cushion.
The exact drop-in replacement is the MBLJ40X250-30, matching the bore, stroke, force, and G1/4 port. Upgrading brings a riveted rolling-packed body instead of threaded covers. Because this SKU lacks a -S magnet, it cannot take a position sensor; the MBLJ upgrade uses CMSG/DMSG/EMSG switches. The adjuster sets travel but does not hold load without live air.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-30 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-30 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X250-30 |
| 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 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 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-30
| 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 Is Used
CNC Lathe Bar Feed
Dial the 220-250mm reach to push raw bar stock into a collet chuck, using the 628N push force to overcome spindle insertion resistance.
Printed Circuit Board Tester
Set a precise end position for a bed-of-nails fixture, ensuring the 40mm rod contacts test points without crushing the PCB substrate.
Injection Mold Ejector
Fine-tune the rear travel stop to eject plastic parts from a cavity at a fixed depth, preventing over-travel that could mark the parting line.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-30 with MBLJ40X250-30
Replace the MALJ40X250-30 with the MBLJ40X250-30. Confirm the 40mm bore, 250mm stroke, -30 adjust code, G1/4 port, and M12x1.25 rod thread. Mounting is FA or LB only; there is no back cover or SDB option. The adjuster is a travel stop, not a lock, so add an external lock for held loads.
To size either way: step down to the 32mm bore for 402N push at 0.5MPa, or step up if you need more force. With a 250mm stroke, mind rod-bending under side loads—keep the load guided.
Upgrade checklist
- ✓ Order the MBLJ40X250-30 (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 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-30 FAQ
Yes, the MALJ40X250-30 is discontinued. The exact drop-in replacement is the MBLJ40X250-30, matching the 40mm bore, 250mm stroke, 30mm adjust, force, and G1/4 port. The MBLJ upgrades to a riveted rolling-packed body.
It delivers 628N push and 528N pull at 0.5MPa, 880N push at 0.7MPa, and 128kgf max at 1.0MPa. The -30 code gives a usable 220-250mm window. This no-magnet SKU cannot take a sensor; the MBLJ uses CMSG/DMSG/EMSG switches.
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The MBLJ40X250-30 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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