This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ25X150-20S, 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 MALJ25X150-20-S
The AirTAC MALJ25 Adjustable Mini Air Cylinder MALJ25X150-20-S 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 130 to 150 mm. This model is discontinued — the direct replacement is the MBLJ25X150-20-S.
- BoreØ25 mm
- Stroke150 mm
- Adjust window130–150 mm
- Port sizeG1/8
- Rod threadM10×1.25
- StatusDiscontinued → MBLJ25X150-20-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 MALJ25X150-20-S
The AirTAC MALJ25X150-20-S is a discontinued double-acting, double-rod adjustable-stroke cylinder. It features a 25mm bore, 150mm stroke, and a 20mm rear adjuster, giving a usable end-position window of 130-150mm. The direct replacement is the MBLJ25X150-20-S.
This -S SKU uses the older CS1-M/DS1-M reed switches, whereas the MBLJ upgrade uses CMSG/DMSG/EMSG sensors. The original MALJ has threaded covers, while the MBLJ features a riveted rolling-packed body. The rear adjuster acts as a travel stop to fine-tune depth without external shims, but it is not a lock and will not hold a load without live air. Impact is softened by a fixed rubber bumper, as there is no adjustable air cushion.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X150-20-S Technical Specifications
| Model | Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X150-20-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ25X150-20-S |
| Bore size | Ø25 mm |
| Stroke | 150 mm |
| Adjustable window | 130 – 150 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 MBLJ25X150-20-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 MBLJ25X150-20-S matches these values.
Model Code: Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X150-20-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 25 | Bore size in mm (20/25/32/40). |
| ×150 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a 130–150 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 MALJ25X150-20-S Is Used
Carton Flap Folder
Adjust the rear stop to time the folding stroke precisely on a packaging line, accommodating varying box heights without swapping hardware.
Pneumatic Press Pinning
Trim the end position by up to 20mm to set a consistent seating depth for inserting dowel pins in small aluminum jigs, preventing over-travel.
Replacing the Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X150-20-S with MBLJ25X150-20-S
To replace the MALJ25X150-20-S, specify the MBLJ25X150-20-S to match the 25mm bore, 150mm stroke, 20mm adjust code, G1/8 port, M10x1.25 rod thread, and FA/LB mounting (no back cover or SDB). Remember the adjuster is a stop, not a lock; add an external lock for held loads. At 150mm stroke, use a guide to prevent rod bending and side-load wear.
Upgrade checklist
- ✓ Order the MBLJ25X150-20-S (same bore/stroke/adjust)
- ✓ Same 130–150 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 MBLJ25X150-20-S instead of this discontinued model.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X150-20-S FAQ
Yes, the MALJ25X150-20-S is discontinued. The direct replacement is the MBLJ25X150-20-S, which matches the 25mm bore, 150mm stroke, 20mm adjust code, and G1/8 port. The MBLJ upgrades the body to a riveted rolling-packed design and switches the -S magnet compatibility from CS1-M/DS1-M to CMSG/DMSG/EMSG sensors.
The -20 adjuster code lets you trim the stroke up to 20mm at the rear, creating a usable 130-150mm window. The adjuster is a travel stop only, not a lock, and end impact is softened by a fixed rubber bumper rather than an adjustable air cushion.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ25X150-20-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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