This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ40X25-20, 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 MALJ40X25-20
The AirTAC Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-20 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 20 mm, giving a usable end-position window from 5 to 25 mm. This model is discontinued — the direct replacement is the MBLJ40X25-20.
- BoreØ40 mm
- Stroke25 mm
- Adjust window5–25 mm
- Port sizeG1/4
- Rod threadM12×1.25
- StatusDiscontinued → MBLJ40X25-20
- 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 MALJ40X25-20
The AirTAC MALJ40X25-20 is a discontinued double-acting mini cylinder with a rear travel stop. It gives a usable stroke window of 5-25 mm. It uses a fixed rubber bumper, not an air cushion. The direct replacement is the MBLJ40X25-20.
This SKU lacks a magnet, so it cannot take a position sensor. The MALJ uses threaded covers and a PT G1/4 port. The MBLJ40X25-20 upgrade retains the bore, stroke, and adjust code but uses a riveted rolling-packed body. The rear adjuster sets the end position but does not hold load without live air.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-20 Technical Specifications
| Model | Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-20 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ40X25-20 |
| Bore size | Ø40 mm |
| Stroke | 25 mm |
| Adjustable window | 5 – 25 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 MBLJ40X25-20 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 MBLJ40X25-20 matches these values.
Model Code: Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-20
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×25 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a 5–25 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 MALJ40X25-20 Is Used
Riveting aluminum frames
Adjust the stroke window to squeeze rivets on varying frame thicknesses without repositioning external physical stops.
Replacing the Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-20 with MBLJ40X25-20
Replace the MALJ40X25-20 with the MBLJ40X25-20. Confirm the 40 mm bore, 25 mm stroke, 20 mm adjust code, PT G1/4 port, and M12x1.25 rod thread. Mounting is Basic, FA, or LB only; there is no back-cover or SDB option. Because this SKU has no -S magnet, it cannot take a sensor. The MBLJ upgrade uses CMSG/DMSG/EMSG switches if you need sensing. The rear adjuster is a travel stop, not a lock; use an external lock for held loads.
The 40 mm bore gives the highest force here, pushing 880 N at 0.7 MPa.
Upgrade checklist
- ✓ Order the MBLJ40X25-20 (same bore/stroke/adjust)
- ✓ Same 5–25 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 MBLJ40X25-20 instead of this discontinued model.
Airtac MALJ40 Adjustable Mini Cylinder MALJ40X25-20 FAQ
Yes, the MALJ40X25-20 is discontinued. The direct replacement is the MBLJ40X25-20, which matches the 40 mm bore, 25 mm stroke, 20 mm adjust code, G1/4 port, and force. The MBLJ upgrades the body to a riveted rolling-packed design.
The -20 adjuster lets you trim the rear position for a 5-25 mm usable window. It acts as a travel stop, not a load lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ40X25-20 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 MALJ40X25-20 → MBLJ40X25-20)
Tell us the quantity and destination — we quote the direct MBLJ40X25-20 replacement with price, stock and lead time, usually within 7-8 hours.