This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X50-40-S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X50-40-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 MALJ40X50-40-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-40-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 40 mm, giving a usable end-position window from 10 to 50 mm. This model is discontinued — the drop-in replacement is the MBLJ40X50-40-S.
- BoreØ40 mm
- Stroke50 mm
- Adjust window10–50 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X50-40-S
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-40-S
The AirTAC MALJ40X50-40-S is a discontinued 40mm bore, double-acting mini cylinder with a 50mm stroke and a 40mm rear adjuster. This yields a usable stroke window of 10-50mm. It delivers 628N push and 528N pull force at 0.5MPa. The drop-in replacement is the MBLJ40X50-40-S, which matches the G1/4 port, M12x1.25 rod thread, and mounting footprint.
This -S SKU includes a magnet for CS1-M or DS1-M reed switches; the MBLJ upgrade shifts to CMSG/DMSG/EMSG sensors. The MALJ uses threaded covers and a fixed rubber bumper, while the MBLJ features a riveted rolling-packed body. The rear adjuster is a travel stop that sets the end position without needing external shims, but it will not hold a load without live air pressure.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-40-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-40-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X50-40-S |
| Bore size | Ø40 mm |
| Stroke | 50 mm |
| Adjustable window | 10 – 50 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 MBLJ40X50-40-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 MBLJ40X50-40-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-40-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×50 | Nominal stroke length in mm. |
| -40 | Adjustable amount: trim the end to a 10–50 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 MALJ40X50-40-S Is Used
PCB Router Z-Axis Stop
Dial the end position down to 10mm to set router depth on prototype boards, using the 628N push force to plunge cleanly without adding external collars.
Connector Press Fit
Fine-tune the 50mm stroke to press modular jacks into housings, relying on the fixed rubber bumper to absorb the final impact without crushing the plastic.
Carton Flap Tuck
Adjust the retract window to tuck varying cardboard flaps on a packaging line, ensuring the rod-end thread clears the carton edge before the stroke ends.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-40-S with MBLJ40X50-40-S
To replace the MALJ40X50-40-S, order the exact drop-in MBLJ40X50-40-S. Confirm your 40mm bore, 50mm stroke, 40mm adjust code, G1/4 port, PT threads, and FA/LB mounting (no back cover or SDB used). Swap your CS1-M/DS1-M sensors for CMSG/DMSG/EMSG switches. Remember the adjuster is a stop, not a lock; add an external lock for held loads. If sizing alternatives, the 32mm bore gives 402N push at 0.5MPa, while no larger standard MALJ bore exists.
For this 50mm stroke, rod side-loading is minimal, but always verify clean 40um filtered air to protect the 16mm hard-chrome rod and grease-retaining seal.
Upgrade checklist
- ✓ Order the MBLJ40X50-40-S (same bore/stroke/adjust)
- ✓ Same 10–50 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 MBLJ40X50-40-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-40-S FAQ
Yes, the MALJ40X50-40-S is discontinued. The exact drop-in replacement is the MBLJ40X50-40-S, which matches the 40mm bore, 50mm stroke, 40mm adjuster, and G1/4 port. You must only swap your CS1-M/DS1-M sensors for CMSG/DMSG/EMSG switches.
The usable stroke window is 10-50mm. The double-acting single rod delivers 628N push and 528N pull at 0.5MPa, 880N push at 0.7MPa, and a maximum of 128kgf at 1.0MPa. The rear adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Drop-in Upgrade
The MBLJ40X50-40-S replaces this model 1:1.
Fast Dispatch
MBLJ replacements usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Recommended AirTAC MBLJ Replacements
Request a Quote (Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-40-S → MBLJ40X50-40-S)
Tell us the quantity and destination — we quote the drop-in MBLJ40X50-40-S replacement with price, stock and lead time, usually within 7-8 hours.