This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ25X155-30S, 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 MALJ25X155-30S
The AirTAC MALJ25 Adjustable Mini Air Cylinder MALJ25X155-30S 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 MBLJ25X155-30S.
- BoreØ25 mm
- Stroke155 mm
- Adjust window125–155 mm
- Port sizeG1/8
- Rod threadM10×1.25
- StatusDiscontinued → MBLJ25X155-30S
- 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 MALJ25X155-30S
The AirTAC MALJ25X155-30S is a discontinued double-acting, double-rod mini cylinder with a rear travel stopper. It trims up to 30mm off the 155mm stroke, creating a usable 125-155mm end-position window. The direct replacement is the MBLJ25X155-30S, matching the bore, stroke, G1/8 port, and mounting.
This -S SKU uses the older CS1-M/DS1-M reed switches, whereas the MBLJ upgrade accepts CMSG/DMSG/EMSG sensors. The MALJ features threaded covers, while the MBLJ uses a riveted rolling-packed body. The rear adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. Impact is softened by a fixed rubber bumper, not an adjustable air cushion.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X155-30S Technical Specifications
| Model | Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X155-30S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ25X155-30S |
| 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 MBLJ25X155-30S 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 MBLJ25X155-30S matches these values.
Model Code: Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X155-30S
| 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 MALJ25X155-30S Is Used
Dispenser Valve Dosing
Fine-tune the 155mm retract stroke by up to 30mm to control the exact open/close position of an adhesive dispenser valve, ensuring precise shot volumes without reprogramming the PLC.
Leak Test Press
Adjust the rear stopper to lower the probe by a few millimeters, accommodating varying gasket heights on a leak-test press while relying on the 206N pull force to retract the probe.
Replacing the Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X155-30S with MBLJ25X155-30S
To replace this MALJ25X155-30S with the MBLJ25X155-30S, confirm the 25mm bore, 155mm stroke, 30mm adjust code, PT G1/8 port, and FA/LB mounting. There is no back-cover or SDB option. You must also change your sensor family: the old MALJ -S magnet works with CS1-M/DS1-M switches, while the MBLJ uses CMSG/DMSG/EMSG. For a 155mm stroke, be mindful of rod bending under side loads; guide the load externally to prevent binding.
Upgrade checklist
- ✓ Order the MBLJ25X155-30S (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 MBLJ25X155-30S instead of this discontinued model.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X155-30S FAQ
Yes, the MALJ25X155-30S is discontinued. The direct replacement is the MBLJ25X155-30S, which matches the 25mm bore, 155mm stroke, 30mm adjust code, G1/8 port, and FA/LB mounting. The MBLJ upgrades the body to a riveted rolling-packed design and changes the sensor family from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The 30mm adjust code lets you trim the 155mm stroke, creating a usable 125-155mm window. The adjuster is a travel stop, not a lock; it cannot hold a load without live air, and end impact is softened only by a fixed rubber bumper.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ25X155-30S 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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