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, 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
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X15-20 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.
- BoreØ20 mm
- Stroke15 mm
- Adjust window-5–15 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X15-20
- 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
AirTAC MALJ20X15-20 is a discontinued double-acting, double-rod mini cylinder with a rear adjustable stroke stopper. It has a 20mm bore, a 15mm stroke, and a 20mm adjust code, yielding a usable end-position window of 0-15mm. The direct replacement is the MBLJ20X15-20, matching the bore, stroke, port, and force.
The rear adjuster is a travel stop, not a lock; it sets the end position but will not hold a load without live air. This non-magnet SKU cannot take a position sensor. It uses a fixed rubber bumper, not an adjustable air cushion. Upgrade details: the MBLJ20X15-20 uses a riveted rolling-packed body instead of the MALJ's threaded covers, and supports CMSG/DMSG/EMSG sensors (this older MALJ lacks the -S magnet entirely).
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X15-20 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X15-20 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X15-20 |
| 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 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 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X15-20
| 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 Is Used
Micro-Actuated Gripper Jaw
Fine-tune the jaw closure depth on a small pneumatic gripper by trimming the rear travel stopper, ensuring delicate surface-mount component pickup heads do not crush parts.
Dispensing Needle Height Set
Adjust the downward travel window on an automated fluid dispensing head, setting the exact 0-15mm penetration depth of the needle into packaging cavities without swapping cylinders.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X15-20 with MBLJ20X15-20
To replace the MALJ20X15-20, order the direct replacement MBLJ20X15-20. Confirm the 20mm bore, 15mm stroke, 20mm adjust code, G1/8 port, PT thread, and FA/LB mounting (no back cover or SDB). This non-S SKU has no magnet, so there is no CS1-M/DS1-M to CMSG/DMSG/EMSG sensor migration to worry about. The adjuster is a stop, not a lock.
If sizing up or down, the next size down does not exist in this mini series. Because the stroke is only 15mm, rod-bending side loads are negligible.
Upgrade checklist
- ✓ Order the MBLJ20X15-20 (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 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X15-20 FAQ
Yes, the MALJ20X15-20 is discontinued. The MBLJ upgrades to a riveted rolling-packed body from the original threaded covers.
The 20mm adjust code lets you trim the 15mm stroke at the rear, yielding a usable end-position 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 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 MALJ20 Adjustable Mini Cylinder MALJ20X15-20 → MBLJ20X15-20)
Tell us the quantity and destination — we quote the direct MBLJ20X15-20 replacement with price, stock and lead time, usually within 7-8 hours.