This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ25X30-20-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 MALJ25X30-20-S
The AirTAC MALJ25 Adjustable Mini Air Cylinder MALJ25X30-20-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 10 to 30 mm. This model is discontinued — the direct replacement is the MBLJ25X30-20-S.
- BoreØ25 mm
- Stroke30 mm
- Adjust window10–30 mm
- Port sizeG1/8
- Rod threadM10×1.25
- StatusDiscontinued → MBLJ25X30-20-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 MALJ25X30-20-S
The AirTAC MALJ25X30-20-S is a discontinued double-acting, double-rod adjustable-stroke mini cylinder. It has a 25 mm bore and uses a rear screw to trim up to 20 mm of travel, giving a usable end-position window of 10-30 mm. The direct replacement is the MBLJ25X30-20-S, which matches the bore, stroke, adjust code, and G1/8 port.
This SKU includes a magnet (-S) for CS1-M or DS1-M switches, while the MBLJ replacement upgrades to CMSG, DMSG, or EMSG sensors. The original MALJ uses threaded covers, whereas the newer MBLJ features 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 MALJ25X30-20-S Technical Specifications
| Model | Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X30-20-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ25X30-20-S |
| Bore size | Ø25 mm |
| Stroke | 30 mm |
| Adjustable window | 10 – 30 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 MBLJ25X30-20-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 MBLJ25X30-20-S matches these values.
Model Code: Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X30-20-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 25 | Bore size in mm (20/25/32/40). |
| ×30 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a 10–30 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 MALJ25X30-20-S Is Used
Dispenser Valve Timing
Trim the rear 20 mm screw to fine-tune the exact open position of a pneumatic glue valve, synchronizing shot size without reprogramming the PLC.
Small Part Ejector
Adjust the stroke down to 10 mm to poke tiny plastic clips out of an injection mold safely, avoiding a full 30 mm travel that could bend the rod.
Replacing the Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X30-20-S with MBLJ25X30-20-S
Replace this MALJ25X30-20-S with the exact direct replacement MBLJ25X30-20-S. Confirm the 25 mm bore, 30 mm stroke, 20 mm adjust code, G1/8 port, and PT thread form. Mounting is FA or LB only; there is no back cover or SDB option. The -S magnet on this MALJ works with CS1-M/DS1-M switches, but the MBLJ requires CMSG/DMSG/EMSG sensors. Remember the adjuster is a stop, not a lock.
Upgrade checklist
- ✓ Order the MBLJ25X30-20-S (same bore/stroke/adjust)
- ✓ Same 10–30 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 MBLJ25X30-20-S instead of this discontinued model.
Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X30-20-S FAQ
Yes, the MALJ25X30-20-S is discontinued. The direct replacement is the MBLJ25X30-20-S, which matches the 25 mm bore, 30 mm stroke, 20 mm adjust code, and G1/8 port. The MBLJ upgrades the body to a riveted rolling-packed design and changes the -S magnet compatibility from CS1-M/DS1-M to CMSG/DMSG/EMSG switches.
The usable stroke window is 10-30 mm, set by trimming up to 20 mm at the rear. The adjuster is a travel stop, not a lock, so it will not hold a load without live air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ25X30-20-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
Request a Quote (Airtac MALJ25 Adjustable Mini Air Cylinder MALJ25X30-20-S → MBLJ25X30-20-S)
Tell us the quantity and destination — we quote the direct MBLJ25X30-20-S replacement with price, stock and lead time, usually within 7-8 hours.