This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ40X275-40-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 MALJ40X275-40-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-40-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 235 to 275 mm. This model is discontinued — the direct replacement is the MBLJ40X275-40-S.
- BoreØ40 mm
- Stroke275 mm
- Adjust window235–275 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X275-40-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 MALJ40X275-40-S
The AirTAC MALJ40X275-40-S is a discontinued double-acting adjustable-stroke mini cylinder. It features a 40mm bore, a 275mm stroke, and a 40mm rear adjuster, providing a usable end-position window of 235-275mm. The direct replacement is the MBLJ40X275-40-S, matching the bore, stroke, force, G1/4 port, and mounting.
This -S magnet model originally used CS1-M/DS1-M switches, while the MBLJ replacement upgrades to CMSG/DMSG/EMSG sensors. The original MALJ uses threaded covers, whereas the MBLJ features a riveted rolling-packed body. The rear adjuster is a travel stop, not a lock; it cannot hold a load without live air. End impact is softened by a fixed rubber bumper, not an adjustable air cushion.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-40-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-40-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X275-40-S |
| Bore size | Ø40 mm |
| Stroke | 275 mm |
| Adjustable window | 235 – 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 MBLJ40X275-40-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 MBLJ40X275-40-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-40-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. |
| -40 | Adjustable amount: trim the end to a 235–275 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 MALJ40X275-40-S Is Used
Automated Welding Torch Positioning
Dial in the 235-275mm reach on a robotic MIG welder.
Palletizer Depth Stop Tuning
Adjust the 40mm travel window on a packaging line to handle varying pallet depths. The G1/4 port provides the high flow needed to cycle the 128kgf capacity rod rapidly for heavy corrugated box placement.
Long-Stroke Part Ejection
Extract heavy castings from a molding press. The 275mm stroke provides deep reach, but the 16mm carbon-steel rod requires a dedicated external guide rail to prevent binding and side-load buckling during ejection.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-40-S with MBLJ40X275-40-S
To replace the MALJ40X275-40-S with the MBLJ40X275-40-S, confirm the 40mm bore, 275mm stroke, 40mm adjust code, G1/4 port, PT thread, and FA/LB mounting (no back cover or SDB). Remember the adjuster sets the end position but does not hold the load. The -S magnet requires a sensor family change from CS1-M/DS1-M to CMSG/DMSG/EMSG.
At 275mm stroke, the 16mm rod is highly susceptible to side-load and bending; ensure rigid guidance to prevent premature seal wear and rod damage.
Upgrade checklist
- ✓ Order the MBLJ40X275-40-S (same bore/stroke/adjust)
- ✓ Same 235–275 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 MBLJ40X275-40-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-40-S FAQ
Yes, the MALJ40X275-40-S is discontinued. The direct replacement is the MBLJ40X275-40-S, which matches the 40mm bore, 275mm stroke, 40mm adjuster, G1/4 port, and force. You must upgrade your sensors from the old CS1-M/DS1-M to the new CMSG/DMSG/EMSG switches.
The -40 code allows you to trim up to 40mm at the rear, creating a usable stroke window of 235-275mm. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ40X275-40-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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