This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ25X155-30, 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 MALJ25X155-30
The AirTAC MALJ25 Adjustable Mini Air Cylinder MALJ25X155-30 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 125 to 155 mm. This model is discontinued — the direct replacement is the MBLJ25X155-30.
- BoreØ25 mm
- Stroke155 mm
- Adjust window125–155 mm
- Port sizeG1/8
- Rod threadM10×1.25
- StatusDiscontinued → MBLJ25X155-30
- 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 MALJ25X155-30
The AirTAC MALJ25X155-30 is a discontinued double-acting double-rod mini cylinder with a 30 mm rear travel stopper, yielding a usable extension window of 125-155 mm. The direct replacement is the MBLJ25X155-30, matching the 25 mm bore, 155 mm stroke, G1/8 port, and mounting.
This SKU lacks a magnet (-S), so it cannot accept a position sensor. The rear adjuster sets the end position but does not hold load without live air. Upgrading to the MBLJ replaces the older threaded covers with a riveted rolling-packed body. Impact is absorbed by a fixed rubber bumper, not an adjustable air cushion.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X155-30 Technical Specifications
| Model | Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X155-30 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ25X155-30 |
| Bore size | Ø25 mm |
| Stroke | 155 mm |
| Adjustable window | 125 – 155 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 MBLJ25X155-30 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 MBLJ25X155-30 matches these values.
Model Code: Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X155-30
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 25 | Bore size in mm (20/25/32/40). |
| ×155 | Nominal stroke length in mm. |
| -30 | Adjustable amount: trim the end to a 125–155 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 MALJ25X155-30 Is Used
PCB Router Depth Stop
Dials the exact 125-155 mm reach on a depaneling fixture.
Textile Loom Tension Arm
Trims the 155 mm extension window on a fabric guide arm. The fixed rubber bumper absorbs the end impact during high-speed loom cycling, protecting the 10 mm rod from shock.
Aluminum Extrusion Clamp
Adjusts the clamping window on a cut-off saw. The 30 mm adjuster lets operators fine-tune the 206 N pull force contact point for varying profile widths without swapping tooling.
Replacing the Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X155-30 with MBLJ25X155-30
To replace the MALJ25X155-30, specify the MBLJ25X155-30 to keep the 25 mm bore, 155 mm stroke, 30 mm adjuster, G1/8 PT port, and FA/LB mounting (no back cover or SDB). Because this SKU has no -S magnet, you cannot mount a sensor; if you need sensing, step up to an MBLJ25X155-30S and use CMSG/DMSG/EMSG switches instead of the legacy CS1-M/DS1-M.
At 155 mm stroke, minimize side loads to prevent rod bending, as the rear stopper only trims travel and provides no load-holding capability.
Upgrade checklist
- ✓ Order the MBLJ25X155-30 (same bore/stroke/adjust)
- ✓ Same 125–155 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 MBLJ25X155-30 instead of this discontinued model.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X155-30 FAQ
Yes, the MALJ25X155-30 is discontinued. The direct replacement is the MBLJ25X155-30, matching the 25 mm bore, 155 mm stroke, 30 mm adjuster, G1/8 port, and mounting. The MBLJ upgrades the body to a riveted rolling-packed design. If you need a sensor, order the -S version and use CMSG/DMSG/EMSG switches, as this no-S SKU cannot take one.
The usable stroke window is 125-155 mm (155 mm stroke minus the 30 mm rear adjuster). The rear adjuster is a travel stop, not a lock, and will not hold the load without live air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ25X155-30 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 MALJ25 Adjustable Mini Air Cylinder MALJ25X155-30 → MBLJ25X155-30)
Tell us the quantity and destination — we quote the direct MBLJ25X155-30 replacement with price, stock and lead time, usually within 7-8 hours.