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-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 MALJ40X30-30-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X30-30-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 0 to 30 mm. This model is discontinued — the direct replacement is the MBLJ40X30-30-S.
- BoreØ40 mm
- Stroke30 mm
- Adjust window0–30 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X30-30-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 MALJ40X30-30-S
The AirTAC MALJ40X30-30-S is a discontinued double-acting, double-rod mini cylinder with a rear adjustable stroke stopper. The -30 adjust code lets you dial the end position back by 30 mm, creating a usable stroke window from 0 to 30 mm. The direct replacement is the MBLJ40X30-30-S, matching bore, stroke, force, port, and mounting.
This cylinder uses a fixed rubber bumper, not an adjustable air cushion. The rear adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. For load-holding, use an external lock. Upgrade details: the MALJ has threaded covers and uses CS1-M / DS1-M sensors for its -S magnet, while the MBLJ replacement features a riveted rolling-packed body and uses CMSG / DMSG / EMSG sensors.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X30-30-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X30-30-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X30-30-S |
| 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-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 MBLJ40X30-30-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X30-30-S
| 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-S Is Used
Pneumatic Spot Welder
Adjust the rear stop to control electrode approach distance on a spot welder, preventing deformation while delivering 880 N at 0.7 MPa.
PCB Edge Dampener
Fine-tune the retraction end point on a PCB conveyor edge guide, using the fixed rubber bumper to soften the impact of the 16 mm rod.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X30-30-S with MBLJ40X30-30-S
To replace the MALJ40X30-30-S, order the direct replacement MBLJ40X30-30-S. Confirm the 40 mm bore, 30 mm stroke, 30 mm adjust code, G1/4 port, PT thread, and FA or LB mounting. There is no back-cover or SDB option. The -S magnet means a sensor family change from CS1-M / DS1-M to CMSG / DMSG / EMSG. The adjuster is a stop, not a lock.
The 16 mm hard-chrome rod handles the 30 mm stroke easily without side-load bending risks.
Upgrade checklist
- ✓ Order the MBLJ40X30-30-S (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-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X30-30-S FAQ
Yes, the MALJ40X30-30-S is discontinued. The direct replacement is the MBLJ40X30-30-S, which matches the 40 mm bore, 30 mm stroke, 30 mm adjust code, G1/4 port, and FA/LB mounting. The MBLJ upgrades the body to a riveted rolling-packed design and changes the -S magnet sensor family from CS1-M / DS1-M to CMSG / DMSG / EMSG.
The -30 adjust code lets you trim up to 30 mm at the rear, giving a usable stroke window from 0 to 30 mm. The adjuster is a travel stop, not a lock. At 0.7 MPa, push is 880 N. The maximum force is 128 kgf at 1.0 MPa.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ40X30-30-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
Request a Quote (Airtac MALJ40 Adjustable Mini Cylinder MALJ40X30-30-S → MBLJ40X30-30-S)
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