This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X120-50, 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 MALJ20X120-50
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X120-50 is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 50 mm, giving a usable end-position window from 70 to 120 mm. This model is discontinued — the direct replacement is the MBLJ20X120-50.
- BoreØ20 mm
- Stroke120 mm
- Adjust window70–120 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X120-50
- 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 MALJ20X120-50
The AirTAC MALJ20X120-50 is a discontinued double-acting mini cylinder with a 20 mm bore and 120 mm stroke. It features a rear adjustable stopper that trims up to 50 mm, giving a usable end-position window of 70-120 mm. The direct replacement is the MBLJ20X120-50, matching the bore, stroke, adjust code, G1/8 port, and mounting.
This SKU has no -S magnet, so it cannot accept a position sensor. The adjuster sets travel but does not hold load without live air. Upgrading to the MBLJ20X120-50 moves you from threaded covers to a riveted rolling-packed body. The fixed rubber bumper softens end impact; this is an adjustable stroke, not an adjustable cushion.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X120-50 Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X120-50 |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X120-50 |
| Bore size | Ø20 mm |
| Stroke | 120 mm |
| Adjustable window | 70 – 120 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 MBLJ20X120-50 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 MBLJ20X120-50 matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X120-50
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×120 | Nominal stroke length in mm. |
| -50 | Adjustable amount: trim the end to a 70–120 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 MALJ20X120-50 Is Used
Wire Harness Tape Wrap
Fine-tune the retraction end-point on an automated wire harness tape wrapper, adjusting the 50 mm stopper to vary wrap pitch without swapping hardware.
Small Parts Ejector
Trim the forward stroke on a small plastic parts ejection gate to push lightweight components precisely 70-120 mm, preventing them from flying off the fixture.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X120-50 with MBLJ20X120-50
Replace this MALJ20X120-50 with the exact MBLJ20X120-50 direct. Confirm the 20 mm bore, 120 mm stroke, 50 mm adjust code, G1/8 port, M8x1.25 rod thread, and FA/LB mounting (no back cover or SDB). Since this SKU lacks a magnet, you cannot mount a sensor; the MBLJ upgrade uses CMSG/DMSG/EMSG switches if you add an -S version. The rear adjuster is a travel stop, not a lock. At 120 mm stroke, watch rod side-load and bending on the 8 mm rod.
Upgrade checklist
- ✓ Order the MBLJ20X120-50 (same bore/stroke/adjust)
- ✓ Same 70–120 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 MBLJ20X120-50 instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X120-50 FAQ
Yes, the MALJ20X120-50 is discontinued. The direct replacement is the MBLJ20X120-50, matching the 20 mm bore, 120 mm stroke, 50 mm adjust code, and G1/8 port. The MBLJ upgrades the threaded covers to a riveted rolling-packed body.
The usable adjustable window is 70-120 mm (120 mm stroke minus the 50 mm adjust code). The adjuster is a travel stop, not a lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X120-50 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 MALJ20X120-50 → MBLJ20X120-50)
Tell us the quantity and destination — we quote the direct MBLJ20X120-50 replacement with price, stock and lead time, usually within 7-8 hours.