This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X250-20-S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X250-20-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 MALJ40X250-20-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-20-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 20 mm, giving a usable end-position window from 230 to 250 mm. This model is discontinued — the drop-in replacement is the MBLJ40X250-20-S.
- BoreØ40 mm
- Stroke250 mm
- Adjust window230–250 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X250-20-S
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-20-S
The AirTAC MALJ40X250-20-S is a discontinued double-acting single-rod cylinder with a 20 mm rear adjustable stop. It delivers 628 N push and 528 N pull force at 0.5 MPa. The exact drop-in replacement is the MBLJ40X250-20-S, matching the 40 mm bore, 250 mm stroke, G1/4 port, and mounting. The 20 mm adjuster trims the end position, creating a usable 230-250 mm stroke window.
This -S magnet SKU uses older CS1-M / DS1-M switches, while the MBLJ upgrade uses CMSG / DMSG / EMSG sensors. The adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. MALJ uses threaded covers and a fixed rubber bumper, whereas the MBLJ replacement features a riveted rolling-packed body.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-20-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-20-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X250-20-S |
| Bore size | Ø40 mm |
| Stroke | 250 mm |
| Adjustable window | 230 – 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 MBLJ40X250-20-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 MBLJ40X250-20-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-20-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. |
| -20 | Adjustable amount: trim the end to a 230–250 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 MALJ40X250-20-S Is Used
Packaging Carton Flap Folding
Dials in the exact 230-250 mm reach to fold varying corrugated cardboard flaps without repositioning the entire machine frame.
PCB Conveyor Stopper Gate
Uses the 628 N push force to halt printed circuit boards on a production line, adjusting the 20 mm window for different board thicknesses.
Woodworking Panel Alignment
Squashes edge-banding materials into place. The fixed rubber bumper absorbs the shock of the 40 mm bore impact at the end of every stroke.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-20-S with MBLJ40X250-20-S
To replace this MALJ40X250-20-S, order the MBLJ40X250-20-S. Confirm the 40 mm bore, 250 mm stroke, 20 mm adjust code, G1/4 port, PT threads, and FA/LB mounting (no back cover or SDB). The -S magnet requires changing from CS1-M / DS1-M to CMSG / DMSG / EMSG switches. Remember the adjuster is a stop, not a lock; use an external lock for held loads.
For sizing, stepping down to the 32 mm bore yields 402 N push at 0.5 MPa, while stepping up to the next larger standard bore gives higher force. At 250 mm stroke, minimize side-load to prevent rod bending. The fixed rubber bumper softens impact but provides no adjustable cushion.
Upgrade checklist
- ✓ Order the MBLJ40X250-20-S (same bore/stroke/adjust)
- ✓ Same 230–250 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 MBLJ40X250-20-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X250-20-S FAQ
Yes, the MALJ40X250-20-S is discontinued. The exact drop-in replacement is the MBLJ40X250-20-S, which matches the 40 mm bore, 250 mm stroke, 20 mm adjuster, G1/4 port, and FA/LB mounting. 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 20 mm adjuster creates a usable stroke window from 230 mm to 250 mm. The full force figures are: 628 N push at 0.5 MPa, 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 adjuster is a travel stop, not a lock.
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Drop-in Upgrade
The MBLJ40X250-20-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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