This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X15-20-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 MALJ20 Adjustable Mini Cylinder MALJ20X15-20-S
The AirTAC MALJ20 Adjustable Mini Cylinder MALJ20X15-20-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 -5 to 15 mm. This model is discontinued — the direct replacement is the MBLJ20X15-20-S.
- BoreØ20 mm
- Stroke15 mm
- Adjust window-5–15 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X15-20-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 MALJ20 Adjustable Mini Cylinder MALJ20X15-20-S
The AirTAC MALJ20X15-20-S is a discontinued double-acting, double-rod mini cylinder with a 20mm bore and a 15mm stroke. It is replaced directly by the MBLJ20X15-20-S. The -20 adjust code lets you trim up to 20mm at the rear, creating a usable end-position window of 0-15mm.
This SKU includes a magnet (-S) for position sensing. The legacy MALJ uses CS1-M or DS1-M switches, while the MBLJ20X15-20-S direct uses CMSG, DMSG, or EMSG sensors. The old MALJ has threaded covers, whereas the MBLJ features a riveted rolling-packed body. Both use a fixed rubber bumper, so the adjustable stroke must not be confused with an adjustable cushion. The rear 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 MALJ20X15-20-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X15-20-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X15-20-S |
| Bore size | Ø20 mm |
| Stroke | 15 mm |
| Adjustable window | -5 – 15 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 MBLJ20X15-20-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 MBLJ20X15-20-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X15-20-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×15 | Nominal stroke length in mm. |
| -20 | Adjustable amount: trim the end to a -5–15 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 MALJ20X15-20-S Is Used
Microvalve Seating
Press small pneumatic valve cartridges into a manifold block, fine-tuning the 0-15mm insertion depth without adding external spacers to the fixture.
Fiber-Optic Cleaver Clamp
Adjust the end position down to 0mm to delicately clamp delicate fiber-optic ferrules, relying on the 132N pull force to retract the rod cleanly.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X15-20-S with MBLJ20X15-20-S
To replace the MALJ20X15-20-S, order the exact direct replacement MBLJ20X15-20-S. Confirm the 20mm bore, 15mm stroke, 20mm adjust code, G1/8 port, PT thread, and FA or LB mounting (there is no back cover or SDB option). The -S magnet means your sensor family must change from CS1-M/DS1-M to CMSG/DMSG/EMSG. If you need to step down from this 20mm bore, there is no smaller MALJ size. Remember that the rear adjuster is a travel stop, not a lock, so an external lock is required for held loads.
Upgrade checklist
- ✓ Order the MBLJ20X15-20-S (same bore/stroke/adjust)
- ✓ Same -5–15 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 MBLJ20X15-20-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X15-20-S FAQ
Yes, the MALJ20X15-20-S is discontinued. The direct replacement is the MBLJ20X15-20-S, which matches the 20mm bore, 15mm stroke, 20mm adjust code, G1/8 port, and FA/LB mounting. You only need to update your sensors from CS1-M/DS1-M to CMSG/DMSG/EMSG switches.
The -20 adjust code allows you to trim up to 20mm at the rear, creating a usable stroke window of 0-15mm. The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X15-20-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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