This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ25X400-75-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 MALJ25 Adjustable Mini Air Cylinder MALJ25X400-75-S
The AirTAC MALJ25 Adjustable Mini Air Cylinder MALJ25X400-75-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 75 mm, giving a usable end-position window from 325 to 400 mm. This model is discontinued — the direct replacement is the MBLJ25X400-75-S.
- BoreØ25 mm
- Stroke400 mm
- Adjust window325–400 mm
- Port sizeG1/8
- Rod threadM10×1.25
- StatusDiscontinued → MBLJ25X400-75-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 MALJ25 Adjustable Mini Air Cylinder MALJ25X400-75-S
The AirTAC MALJ25X400-75-S is a discontinued double-acting, double-rod adjustable-stroke mini cylinder. It features a 25mm bore, a 400mm stroke, and a 75mm rear adjuster, giving a usable end-position window of 325-400mm. The direct replacement is the MBLJ25X400-75-S, matching the bore, stroke, force, G1/8 port, and mounting.
The rear adjuster is a travel stop, not a lock; it cannot hold a load without live air. This MALJ has threaded covers and a fixed rubber bumper, while the MBLJ upgrade features a riveted rolling-packed body. The -S magnet on this unit works with older CS1-M/DS1-M switches, whereas the MBLJ replacement uses CMSG/DMSG/EMSG sensors. Note that the 400mm stroke exceeds the 300mm standard for this bore, making it a non-standard, made-to-order item.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-75-S Technical Specifications
| Model | Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-75-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ25X400-75-S |
| Bore size | Ø25 mm |
| Stroke | 400 mm |
| Adjustable window | 325 – 400 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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 300 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 MBLJ25X400-75-S carries the same ratings.
Theoretical Output Force (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 206 N | 206 N |
| 0.7 MPa | 289 N | — |
| Max (@1.0 MPa) | 42 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 MBLJ25X400-75-S matches these values.
Model Code: Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-75-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 25 | Bore size in mm (20/25/32/40). |
| ×400 | Nominal stroke length in mm. |
| -75 | Adjustable amount: trim the end to a 325–400 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 MALJ25 Adjustable Mini Air Cylinder MALJ25X400-75-S Is Used
Long-Reach PCB Edge Tester
Dials the probe travel from 325 to 400mm to hit deep test points on large server motherboards without repositioning the entire test fixture.
Carton Flap Folder Stop
Adjusts the rear stop to fold varying box heights precisely, relying on the fixed rubber bumper to soften the high-speed 400mm extension impact.
Replacing the Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-75-S with MBLJ25X400-75-S
To replace the MALJ25X400-75-S, order the direct replacement MBLJ25X400-75-S. Confirm the 25mm bore, 400mm stroke, 75mm adjust code, G1/8 port, PT thread, and FA/LB mounting (no back cover or SDB). The -S magnet requires upgrading from CS1-M/DS1-M to CMSG/DMSG/EMSG sensors. Remember the adjuster is a stop, not a lock.
At 400mm, the rod is highly susceptible to side-load bending; ensure rigid guidance to prevent premature seal failure.
Upgrade checklist
- ✓ Order the MBLJ25X400-75-S (same bore/stroke/adjust)
- ✓ Same 325–400 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 MBLJ25X400-75-S instead of this discontinued model.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X400-75-S FAQ
Yes, the MALJ25X400-75-S is discontinued. The direct replacement is the MBLJ25X400-75-S, matching the 25mm bore, 400mm stroke, 75mm adjust code, G1/8 port, and mounting. You must upgrade the sensor from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The 75mm adjuster allows a usable stroke window of 325-400mm. The adjuster is a travel stop only and cannot hold a load without air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ25X400-75-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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