This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is MBL20X450-S-U — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the MBL20X450-S-U in place of this model. The MBL replacement upgrades to a riveted rolling-packed body and the current CMSG / DMSG / EMSG sensor switches (the MAL used CS1-M / DS1-M).
Airtac MAL20 Aluminum Alloy Mini Cylinder MAL20X450-S-U
The AirTAC Airtac MAL20 Aluminum Alloy Mini Cylinder MAL20X450-S-U is a double-acting aluminum-barrel mini round cylinder with a Ø20mm bore and 450mm stroke, G1/8 air ports and a fixed rubber bumper. This model is discontinued — the drop-in replacement is the MBL20X450-S-U, which matches its bore, stroke, force and mounting.
- BoreØ20 mm
- Stroke450 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- StatusDiscontinued → MBL20X450-S-U
About the Airtac MAL20 Aluminum Alloy Mini Cylinder MAL20X450-S-U
The AirTAC MAL20X450-S-U is a discontinued double-acting aluminum mini round cylinder with a 20mm bore and 450mm stroke. It delivers 157N of push force and 132N of pull force at 0.5 MPa. The exact drop-in replacement is the MBL20X450-S-U, which matches the original bore, stroke, output force, G1/8 port, and U flat-end back cover. Because this unit has a 450mm stroke on a small 8mm rod, it is highly susceptible to side-load bending and requires an external guide rail to prevent piston binding.
This legacy SKU features a built-in magnet (-S) for position sensing. On the older MAL body, which uses threaded front and back covers, the magnet functions with legacy CS1-M or DS1-M reed switches. When upgrading to the riveted rolling-packed MBL body, you must update to the current CMSG, DMSG, or EMSG sensor family. The piston relies on a heterogeneous two-way seal that retains grease, and the carbon-steel rod features 20um hard-chrome plating to resist wear. End-of-stroke deceleration is handled by a fixed rubber bumper, not an adjustable cushion.
Airtac MAL20 Aluminum Alloy Mini Cylinder MAL20X450-S-U Technical Specifications
| Model | Airtac MAL20 Aluminum Alloy Mini Cylinder MAL20X450-S-U |
|---|---|
| Series | MAL aluminum-barrel mini round cylinder (discontinued) |
| Replacement | MBL20X450-S-U |
| Bore size | Ø20 mm |
| Stroke | 450 mm |
| Acting type | Double acting |
| 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 500 mm |
Specifications follow the official AirTAC MAL datasheet (now discontinued). The MBL20X450-S-U carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 kgf | |
The MBL20X450-S-U produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac MAL20 Aluminum Alloy Mini Cylinder MAL20X450-S-U
| MAL | Aluminum-barrel mini round cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×450 | Stroke length in mm. |
| S | Optional magnet for a CS1-M / DS1-M sensor (MBL uses CMSG/DMSG/EMSG). |
| CA / U / CM | Back cover: CA pivot, U flat-end or CM round-end. |
Replacement mapping: MAL → MBL, MSAL → MSBL, MTAL → MTBL, MALD → MBLD, MALJ → MBLJ.
Where the Airtac MAL20 Aluminum Alloy Mini Cylinder MAL20X450-S-U Is Used
PCB Edge Belt Conveyor
Uses 157N of push force at 0.5 MPa to actuate a narrow guide rail flap along a 450mm stroke, routing populated circuit boards through a testing station.
Carton Flap Plow
Folds secondary packaging tuck-flaps on a compact indexing conveyor, relying on the U flat-end cover for rigid mounting and the -S magnet to time the cycle.
Micro-Stopper Gate
Deploys a small physical stopper barrier for lightweight trays in a packaging machine, where the 8mm rod and fixed rubber bumper absorb the low-energy impact.
Replacing the Airtac MAL20 Aluminum Alloy Mini Cylinder MAL20X450-S-U with MBL20X450-S-U
To replace the MAL20X450-S-U, order the MBL20X450-S-U. Confirm your 8mm rod-end thread (M8x1.25) and your PT port threads match your existing fittings. The U flat-end back cover provides rigid rear mounting, but for a 450mm stroke, you should pivot to an FA flange or SDB pivot bracket to accommodate slight misalignment. If your application needs adjustable air cushioning to absorb kinetic energy at the end of this long stroke, step up to the MBLC variant on the current line, as the MAL only offers a fixed rubber bumper.
For sizing alternatives, stepping down to the 25mm bore yields 245N push at 0.5 MPa if you need more force, while no smaller standard mini round bore exists below 20mm in this family. A plain MAL or MBL cylinder does not hold its load when air pressure is lost; the rod will drift. If gravity or vertical loads are present, install an external pilot-operated check valve or a dedicated rod lock.
Upgrade checklist
- ✓ Order the MBL20X450-S-U (same bore/stroke/force)
- ✓ Same G1/8 port and mounting accessories
- ✓ Sensor: swap CS1-M/DS1-M → CMSG/DMSG/EMSG
- ✓ Need a cushion? use MBLC (adjustable air cushion)
- ✓ Confirm back cover (CA / U) and thread (PT/NPT/G)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.1 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Front/rear covers are threaded — not intended for field disassembly.
- check Use the correct mounting accessory (LB / FA / SDB) and back cover (CA / U / CM).
- check For new builds, specify the MBL20X450-S-U instead of this discontinued model.
Airtac MAL20 Aluminum Alloy Mini Cylinder MAL20X450-S-U FAQ
Yes, the MAL20X450-S-U is discontinued. The exact drop-in replacement is the MBL20X450-S-U, which matches the 20mm bore, 450mm stroke, G1/8 port, and U flat-end cover. The MBL body uses a riveted rolling-packed design instead of threaded covers, and if you use the -S magnet, you must upgrade from the old CS1-M/DS1-M switches to the current CMSG/DMSG/EMSG sensors.
At 0.5 MPa, the push force is 157N and the pull force is 132N. At 0.7 MPa, the push force is 220N. The theoretical maximum force is 32 kgf at 1.0 MPa. It operates on filtered air at 0.1-1.0 MPa, runs at speeds between 30-800 mm/s, and uses a fixed rubber bumper for end-of-stroke deceleration.
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Drop-in Upgrade
The MBL20X450-S-U replaces this model 1:1.
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MBL replacements usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
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