This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBLJ40X50-30-S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBLJ40X50-30-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 MALJ40X50-30-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-30-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 20 to 50 mm. This model is discontinued — the drop-in replacement is the MBLJ40X50-30-S.
- BoreØ40 mm
- Stroke50 mm
- Adjust window20–50 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X50-30-S
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-30-S
The AirTAC MALJ40X50-30-S is a discontinued 40mm bore, double-acting adjustable-stroke mini cylinder. The 30mm rear adjuster creates a usable end-position window of 20-50mm, letting you dial in the exact reach without external stops. It delivers 628N push and 528N pull at 0.5MPa. The exact drop-in replacement is the MBLJ40X50-30-S, matching the bore, stroke, G1/4 port, and 128kgf maximum force.
This -S SKU includes a magnet for CS1-M or DS1-M switches; the MBLJ upgrade shifts to CMSG/DMSG/EMSG sensors and replaces the original threaded covers with a riveted rolling-packed body. The rear adjuster functions strictly as a travel stop to set the end position, not a lock to hold loads without live air. End impact is absorbed by a fixed rubber bumper, as there is no adjustable air cushion.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-30-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-30-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X50-30-S |
| Bore size | Ø40 mm |
| Stroke | 50 mm |
| Adjustable window | 20 – 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 MBLJ40X50-30-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 MBLJ40X50-30-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-30-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. |
| -30 | Adjustable amount: trim the end to a 20–50 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 MALJ40X50-30-S Is Used
PCB Edge Routing Machine
Dial in the 20-50mm window to set the exact 628N cutting depth for router spindles without machining new hard stops.
Aluminum Extrusion Press
Fine-tune the rear travel stop on a 40mm bore to perfectly seat extrusion blanks before the main 880N clamping stroke at 0.7MPa.
Packaging Folder Sealer
Adjust the end position on the fly to match various carton depths, using the fixed rubber bumper to soften the stroke end impact.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-30-S with MBLJ40X50-30-S
To replace the MALJ40X50-30-S, specify the MBLJ40X50-30-S. Confirm the 40mm bore, 50mm stroke, 30mm adjust code, G1/4 port, PT thread, and FA/LB mounting (no back cover or SDB is used). Because this unit has the -S magnet, note the sensor family change from CS1-M/DS1-M to CMSG/DMSG/EMSG. Remember the rear adjuster is a travel stop, not a lock; use an external lock for held loads.
If you need to resize, stepping down to the 32mm bore yields 402N push at 0.5MPa, while stepping up is not an option as 40mm is the largest MALJ bore. If you require a higher force or different mounting, confirm from datasheet.
Upgrade checklist
- ✓ Order the MBLJ40X50-30-S (same bore/stroke/adjust)
- ✓ Same 20–50 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 MBLJ40X50-30-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X50-30-S FAQ
Yes, the MALJ40X50-30-S is discontinued. The exact drop-in replacement is the MBLJ40X50-30-S, matching the 40mm bore, 50mm stroke, 30mm adjust code, G1/4 port, and 128kgf max force. The MBLJ uses a riveted rolling-packed body and CMSG/DMSG/EMSG sensors instead of the original threaded covers and CS1-M/DS1-M switches.
The 30mm adjuster creates a usable stroke window from 20mm up to 50mm. The full force set is 628N push and 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.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Drop-in Upgrade
The MBLJ40X50-30-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 MALJ40X50-30-S → MBLJ40X50-30-S)
Tell us the quantity and destination — we quote the drop-in MBLJ40X50-30-S replacement with price, stock and lead time, usually within 7-8 hours.