This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X50-50S, 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 MALJ20X50-50-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X50-50-S 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 0 to 50 mm. This model is discontinued — the direct replacement is the MBLJ20X50-50-S.
- BoreØ20 mm
- Stroke50 mm
- Adjust window0–50 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X50-50-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 MALJ20X50-50-S
The AirTAC MALJ20X50-50-S is a discontinued double-acting double-rod mini cylinder with a 20mm bore and a 50mm rear adjustable stroke. The -50 adjust code lets you trim the end position up to 50mm, yielding a usable stroke window from 0 to 50mm. It pushes with 157N and pulls with 132N at 0.5 MPa. The direct replacement is the MBLJ20X50-50-S, matching the bore, stroke, force, and G1/8 port.
This SKU includes a -S magnet for CS1-M/DS1-M switches; the MBLJ upgrade moves to CMSG/DMSG/EMSG sensors. The adjuster is a travel stop, not a lock, meaning it sets the end position but will not hold a load without live air. It uses a fixed rubber bumper, not an adjustable cushion, and has threaded covers compared to the riveted body of the modern MBLJ.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X50-50-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X50-50-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X50-50-S |
| Bore size | Ø20 mm |
| Stroke | 50 mm |
| Adjustable window | 0 – 50 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 MBLJ20X50-50-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 MBLJ20X50-50-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X50-50-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×50 | Nominal stroke length in mm. |
| -50 | Adjustable amount: trim the end to a 0–50 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 MALJ20X50-50-S Is Used
Wire Crimp Tooling
Fine-tune the terminal crimp height on an automated wire harness press by adjusting the rear stop, avoiding hard mechanical shims for the 132N pull.
Dispenser Valve Probe
Regulate the contact pressure of a fluid dispensing nozzle on a medical syringe assembly line by setting the the exact 25mm mid-stroke stop point.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X50-50-S with MBLJ20X50-50-S
To replace the MALJ20X50-50-S, select the MBLJ20X50-50-S. Confirm the 20mm bore, 50mm stroke, 50mm adjust code, G1/8 port, PT thread, and FA/LB mounting (no back cover or SDB). The -S magnet means a sensor family change from CS1-M/DS1-M to CMSG/DMSG/EMSG. The rear adjuster is a travel stop, not a lock.
The 0-50mm adjustable window is ideal for tuning depth without swapping hardware.
Upgrade checklist
- ✓ Order the MBLJ20X50-50-S (same bore/stroke/adjust)
- ✓ Same 0–50 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 MBLJ20X50-50-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X50-50-S FAQ
Yes, the MALJ20X50-50-S is discontinued. The direct replacement is the MBLJ20X50-50-S, matching the 20mm bore, 50mm stroke, 50mm adjust code, force, and G1/8 port. You will only need to update your sensors from CS1-M/DS1-M to the CMSG/DMSG/EMSG family.
The usable stroke window is 0-50mm. The rear adjuster is a travel stop, not a lock, so it will not hold a load without air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X50-50-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 MALJ20 Adjustable Mini Cylinder MALJ20X50-50-S → MBLJ20X50-50-S)
Tell us the quantity and destination — we quote the direct MBLJ20X50-50-S replacement with price, stock and lead time, usually within 7-8 hours.