This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ40X30-30, 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 MALJ40X30-30
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X30-30 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 0 to 30 mm. This model is discontinued — the direct replacement is the MBLJ40X30-30.
- BoreØ40 mm
- Stroke30 mm
- Adjust window0–30 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X30-30
- 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 MALJ40X30-30
The AirTAC MALJ40X30-30 is a discontinued double-acting, double-rod mini cylinder with a 40mm bore and 30mm stroke. A rear stopper screw lets you trim the end position by up to 30mm, creating a usable stroke window of 0-30mm. The direct replacement is the MBLJ40X30-30, matching the bore, stroke, adjust code, and G1/4 port.
This SKU lacks a -S magnet, so it cannot accept a position sensor. The adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. Upgrading to the MBLJ40X30-30 replaces the MALJ's threaded covers with a riveted rolling-packed body. Both generations use a fixed rubber bumper, meaning there is no adjustable air cushion to tune.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X30-30 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X30-30 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X30-30 |
| Bore size | Ø40 mm |
| Stroke | 30 mm |
| Adjustable window | 0 – 30 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 MBLJ40X30-30 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 MBLJ40X30-30 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X30-30
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×30 | Nominal stroke length in mm. |
| -30 | Adjustable amount: trim the end to a 0–30 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 MALJ40X30-30 Is Used
Pneumatic Press Tonnage
Short-stroke crimping of spade terminals in a wire harness line, where the 528N pull force retracts the tooling and the fixed rubber bumper absorbs the 0.7 MPa impact.
Sheet Metal Bender
Actuating a small flap-bending jig for mild steel enclosures, relying on the 128 kgf max thrust at 1.0 MPa to form a precise 25mm bend flange.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X30-30 with MBLJ40X30-30
To replace the MALJ40X30-30, order the exact direct replacement MBLJ40X30-30. Confirm the 40mm bore, 30mm stroke, 30mm adjust code, G1/4 port, and PT thread form. Mounting is limited to FA or LB; there is no back cover or SDB option. Because this SKU lacks a magnet, you lose position sensing, but the MBLJ upgrade enables CMSG/DMSG/EMSG sensors if you add the -S option. The rear adjuster is a stop, not a lock; use an external lock for held loads.
Upgrade checklist
- ✓ Order the MBLJ40X30-30 (same bore/stroke/adjust)
- ✓ Same 0–30 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 MBLJ40X30-30 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X30-30 FAQ
Yes, the MALJ40X30-30 is discontinued. The direct replacement is the MBLJ40X30-30, matching the 40mm bore, 30mm stroke, 30mm adjust code, G1/4 port, and force. The MBLJ upgrades the threaded covers to a riveted rolling-packed body.
The 30mm stroke has a 30mm adjust code, yielding a usable stroke window of 0-30mm. The rear adjuster is a travel stop, not a lock, and this no-S SKU cannot take a position sensor.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ40X30-30 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
Request a Quote (Airtac MALJ40 Adjustable Mini Cylinder MALJ40X30-30 → MBLJ40X30-30)
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