This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ40X275-50-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 MALJ40X275-50-S
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-50-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 50 mm, giving a usable end-position window from 225 to 275 mm. This model is discontinued — the direct replacement is the MBLJ40X275-50-S.
- BoreØ40 mm
- Stroke275 mm
- Adjust window225–275 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X275-50-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 MALJ40X275-50-S
The AirTAC MALJ40X275-50-S is a discontinued double-acting double-rod cylinder with a rear travel stop. It gives a usable extension window of 225-275 mm by trimming up to 50 mm at the rear screw. The direct replacement is the MBLJ40X275-50-S, matching the bore, stroke, adjust code, and force.
This SKU includes a magnet (-S) for position sensing. On the MALJ it uses CS1-M or DS1-M switches, while the MBLJ upgrade moves to CMSG, DMSG, or EMSG sensors. The older MALJ has threaded covers, whereas the MBLJ uses a riveted rolling-packed body. The fixed rubber bumper softens end impact, but the adjuster is a travel stop, not a lock, and will not hold a load without live air.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-50-S Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-50-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X275-50-S |
| Bore size | Ø40 mm |
| Stroke | 275 mm |
| Adjustable window | 225 – 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 MBLJ40X275-50-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 MBLJ40X275-50-S matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-50-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. |
| -50 | Adjustable amount: trim the end to a 225–275 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 MALJ40X275-50-S Is Used
Carton Flap Folding
Fine-tune the folding arm end position on a packaging line to accommodate varying box heights, relying on the fixed rubber bumper to absorb the impact.
Pallet Stopper Gate
Set a custom 250 mm stop position for a pallet routing gate, adjusting the 50 mm window on the fly without machining new external hard stops.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-50-S with MBLJ40X275-50-S
To replace this MALJ40X275-50-S, order the MBLJ40X275-50-S. Confirm the 40 mm bore, 275 mm stroke, 50 mm adjust code, G1/4 port, PT thread, and Basic mounting (no back cover or SDB). When changing sensors, note the MBLJ replaces the CS1-M/DS1-M family with CMSG/DMSG/EMSG. At 275 mm stroke, minimize side loads to prevent rod bending, and remember the rear adjuster sets end position but does not lock the load.
Upgrade checklist
- ✓ Order the MBLJ40X275-50-S (same bore/stroke/adjust)
- ✓ Same 225–275 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 MBLJ40X275-50-S instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X275-50-S FAQ
Yes, the MALJ40X275-50-S is discontinued. Note the MBLJ uses a riveted body and requires CMSG/DMSG/EMSG sensors instead of the older CS1-M/DS1-M switches.
The -50 adjust code means you can trim the rear travel stop by up to 50 mm, creating a usable extension window from 225 mm to 275 mm. The adjuster is a travel stop, not a lock, and cannot hold a load without continuous air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ40X275-50-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 MALJ40X275-50-S → MBLJ40X275-50-S)
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