This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ40X275-30-S, with the same bore, stroke, output force, port and mounting, so it fits the same application. 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 MALJ40X275-30-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-30-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 245 to 275 mm. This model is discontinued — the direct replacement is the MBLJ40X275-30-S.
- BoreØ40 mm
- Stroke275 mm
- Adjust window245–275 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X275-30-S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-30-S
The AirTAC MALJ40X275-30-S is a discontinued double-acting mini cylinder with a 40mm bore and a 275mm stroke. The direct replacement is the MBLJ40X275-30-S, matching the bore, stroke, force, and G1/4 port.
This -S SKU uses the older CS1-M/DS1-M reed switches, whereas the MBLJ replacement upgrades to CMSG/DMSG/EMSG sensors. The MALJ features threaded covers, while the MBLJ uses a riveted rolling-packed body. The rear adjuster sets the end position but does not hold the load without live air, and end impact is softened only by a fixed rubber bumper.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-30-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-30-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X275-30-S |
| Bore size | Ø40 mm |
| Stroke | 275 mm |
| Adjustable window | 245 – 275 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 MBLJ40X275-30-S carries the same ratings.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 kgf | |
MALJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative), lower than a single-rod MAL push of the same bore. The MBLJ40X275-30-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-30-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×275 | Nominal stroke length in mm. |
| -30 | Adjustable amount: trim the end to a 245–275 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 MALJ40X275-30-S Is Used
Carton Flap Folder Tensioner
Fine-tune the 275mm end position on a packaging line folder, ensuring the 528N pull force cleanly tucks flaps without crushing the corrugated board.
Textile Fabric Edge Guide
Trim the 30mm rear stopper to align fabric edges on a loom beam, leveraging the G1/4 port's high flow to maintain rapid 30-800mm/s cycling.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-30-S with MBLJ40X275-30-S
To replace the MALJ40X275-30-S with the MBLJ40X275-30-S, confirm the 40mm bore, 275mm stroke, 30mm adjust code, G1/4 port, and PT thread form. Mounting is limited to FA or LB (no back cover or SDB). Note that the -S magnet changes sensor families from CS1-M/DS1-M to CMSG/DMSG/EMSG.
Remember the adjuster is a travel stop, not a lock. Because this stroke is 275mm, be mindful of rod-bending: long strokes amplify side-load, so ensure your mounting guides the load to prevent rod damage.
Upgrade checklist
- ✓ Order the MBLJ40X275-30-S (same bore/stroke/adjust)
- ✓ Same 245–275 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 MBLJ40X275-30-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-30-S FAQ
Yes, the MALJ40X275-30-S is discontinued. The direct replacement is the MBLJ40X275-30-S, which matches the 40mm bore, 275mm stroke, 30mm adjust code, force, and G1/4 port. You will need to upgrade your sensors from the older CS1-M/DS1-M switches to the CMSG/DMSG/EMSG family.
The usable adjustable window is 245-275mm (275mm stroke minus the 30mm adjust code). At 0.7MPa it pushes 880N, and the maximum force is 128kgf at 1.0MPa. The adjuster is a travel stop, not a lock, and it cannot hold a load without live air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ40X275-30-S replaces this model 1:1.
Fast Dispatch
MBLJ replacements are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Recommended AirTAC MBLJ Replacements
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