This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X75-30S, 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 MALJ20 Adjustable Mini Cylinder MALJ20X75-30-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-30-S 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 45 to 75 mm. This model is discontinued — the direct replacement is the MBLJ20X75-30-S.
- BoreØ20 mm
- Stroke75 mm
- Adjust window45–75 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X75-30-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 MALJ20 Adjustable Mini Cylinder MALJ20X75-30-S
The AirTAC MALJ20X75-30-S is a discontinued double-acting, double-rod adjustable-stroke mini cylinder. The direct replacement is the MBLJ20X75-30-S, matching the 20 mm bore, 75 mm stroke, G1/8 port, and 30 mm adjust code. The rear stopper trims up to 30 mm, giving a usable end-position window of 45-75 mm without external hardware.
This -S SKU includes a magnet for older CS1-M / DS1-M switches; the MBLJ replacement upgrades to CMSG / DMSG / EMSG sensors. The MALJ uses threaded covers and a fixed rubber bumper, while the MBLJ features a riveted rolling-packed body. Remember the adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air pressure.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-30-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-30-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X75-30-S |
| Bore size | Ø20 mm |
| Stroke | 75 mm |
| Adjustable window | 45 – 75 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/8 |
| Rod thread | M8×1.25 |
| 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 MBLJ20X75-30-S carries the same ratings.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 132 N | 132 N |
| 0.7 MPa | 185 N | — |
| Max (@1.0 MPa) | 27 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 MBLJ20X75-30-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-30-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×75 | Nominal stroke length in mm. |
| -30 | Adjustable amount: trim the end to a 45–75 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 MALJ20 Adjustable Mini Cylinder MALJ20X75-30-S Is Used
Dispenser Nozzle Height
Fine-tune the 8 mm rod extension on an adhesive dispensing valve, trimming up to 30 mm at the rear to hit the exact substrate clearance without adding spacers.
Small Parts Ejector
Adjust the reach of a pick-and-place ejector pin in a watch-movement assembly cell, relying on the fixed rubber bumper to soften the end impact.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-30-S with MBLJ20X75-30-S
To replace this MALJ20X75-30-S, order the exact direct replacement MBLJ20X75-30-S. Confirm the 20 mm bore, 75 mm stroke, 30 mm adjust code, G1/8 PT port, and M8x1.25 rod thread. Mounting is Basic, FA, or LB only; there is no back-cover or SDB option. The -S magnet means a sensor family change from CS1-M / DS1-M to CMSG / DMSG / EMSG. The adjuster is a stop, not a lock, so add an external lock for held loads.
At 75 mm stroke, watch rod-to-side-load bending on the 8 mm rod.
Upgrade checklist
- ✓ Order the MBLJ20X75-30-S (same bore/stroke/adjust)
- ✓ Same 45–75 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 MBLJ20X75-30-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X75-30-S FAQ
Yes, the MALJ20X75-30-S is discontinued. The direct replacement is the MBLJ20X75-30-S, which matches the 20 mm bore, 75 mm stroke, 30 mm adjust code, G1/8 port, and mounting. The MBLJ upgrades the body to a riveted rolling-packed design and changes the magnet switches from CS1-M / DS1-M to CMSG / DMSG / EMSG.
The 30 mm adjust code lets you trim the rear travel stop, giving a usable stroke window of 45-75 mm. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X75-30-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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