This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X50U — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X50U in place of this model. The replacement upgrades to a riveted rolling-packed body and CMSG / DMSG / EMSG sensors (the MAL used CS1-M / DS1-M).
Airtac MSAL Front Single Acting Compact Cylinder MSAL20X50U
The AirTAC Airtac MSAL Front Single Acting Compact Cylinder MSAL20X50U is a single acting, push (spring return) aluminum-barrel mini cylinder with a Ø20mm bore and 50mm stroke, G1/8 ports and a fixed rubber bumper. Air drives the push (work) stroke and the spring returns the rod — it rests retracted on air loss. This model is discontinued; the drop-in replacement is the AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X50U.
- BoreØ20 mm
- Stroke50 mm
- Port sizeG1/8
- Acting typeSingle acting, push (spring return)
- Rod threadM8×1.25
- StatusDiscontinued → AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X50U
About the Airtac MSAL Front Single Acting Compact Cylinder MSAL20X50U
The AirTAC MSAL20X50U is a discontinued single-acting push, spring-return mini cylinder. Air extends the rod for the 50 mm work stroke, while an internal spring retracts it to a fail-safe home when air is released. The minimum operating pressure is 0.2 MPa to overcome the return spring. At 20 mm bore, this SKU yields a usable push force of 106.8 N at 0.5 MPa and 169.6 N at 0.7 MPa.
The exact drop-in replacement is the MSBL20X50U, matching the 20 mm bore, 50 mm stroke, G1/8 port, and U flat-end back cover. The MSAL20X50U lacks the -S magnet option, meaning it cannot accept a position sensor. As an upgrade detail, the MSAL uses threaded covers and older switches, whereas the MSBL features a riveted rolling-packed body. End-of-stroke damping relies on a fixed rubber bumper, not an adjustable cushion.
Airtac MSAL Front Single Acting Compact Cylinder MSAL20X50U Technical Specifications
| Model | Airtac MSAL Front Single Acting Compact Cylinder MSAL20X50U |
|---|---|
| Series | MAL single-acting mini cylinder (discontinued) |
| Replacement | AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X50U |
| Bore size | Ø20 mm |
| Stroke | 50 mm |
| Acting type | Single acting, push (spring return) |
| Port size | G1/8 |
| Rod thread | M8×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 800 mm/s |
| Cushion | Fixed rubber bumper |
| Max standard stroke | Up to 150 mm |
Single-acting minimum working pressure is 0.2 MPa (the air must overcome the return spring). Do not apply an external load during the spring return stroke. The AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X50U carries the same single-acting ratings.
Usable Push Force (Ø20mm)
| Pressure | Push force (net of spring) |
|---|---|
| 0.5 MPa | 106.8 N |
| 0.7 MPa | 169.6 N |
Usable single-acting force after the return spring — lower than a same-bore double-acting cylinder. Size with a margin.
Model Code: Airtac MSAL Front Single Acting Compact Cylinder MSAL20X50U
| MSAL | Single acting, push (spring return) aluminum-barrel mini cylinder (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×50 | Stroke length in mm. |
| S | Optional magnet for a CS1-M / DS1-M sensor (MSBL uses CMSG/DMSG/EMSG). |
| CA / U / CM | Back cover: CA pivot, U flat-end or CM round-end. |
Replacement: MSAL → MSBL. Related: MTAL/MTBL (single-acting pull), MAL/MBL (double acting).
Where the Airtac MSAL Front Single Acting Compact Cylinder MSAL20X50U Is Used
PCB Ejector Pins
Pushing delicate printed circuit boards out of a test fixture using 106.8 N at 0.5 MPa, relying on the spring return to retract the pin safely when air is cut.
Light-Duty Part Ejection
Ejecting small plastic moulded parts from a machining center, where the fail-safe retracted home prevents crash damage on machine reset.
Packaging Flap Deflector
Holding a cardboard flap open on a packaging line during product drop, with the internal spring automatically closing the deflector on air loss.
Replacing the Airtac MSAL Front Single Acting Compact Cylinder MSAL20X50U with AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X50U
To replace the MSAL20X50U, specify the MSBL20X50U and confirm the 20 mm bore, 50 mm stroke, PT-threaded G1/8 port, and U flat-end back cover. Because this SKU lacks the -S magnet, it cannot take a sensor; if you need position detection, step up to an MSBL20X50SU and use CMSG/DMSG/EMSG switches. Remember the 0.2 MPa minimum operating pressure and apply no external load on the spring return stroke.
For sizing both ways: if 106.8 N at 0.5 MPa is too much force, the next size down does not exist for this series (20 mm is the smallest). If you need more push, step up to the 25 mm bore, which provides 176.4 N at 0.5 MPa. At 50 mm stroke on this compact bore, side-load and rod-bending risks are low, but ensure the load travels on a smooth linear guide.
Upgrade checklist
- ✓ Order the AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X50U (same bore/stroke/force)
- ✓ Same push direction and retracted fail-safe home
- ✓ Min 0.2 MPa; no external load on the spring return
- ✓ Sensor: swap CS1-M/DS1-M → CMSG/DMSG/EMSG
- ✓ 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 0.2 – 1.0 MPa (min 0.2 to overcome the spring).
- check Apply no external load on the spring return stroke.
- check Avoid side load on the piston rod.
- check Front/rear covers are threaded — not for field disassembly.
- check For new builds, specify the AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X50U instead of this discontinued model.
Airtac MSAL Front Single Acting Compact Cylinder MSAL20X50U FAQ
Yes, the MSAL20X50U is discontinued. The exact drop-in replacement is the MSBL20X50U, which matches the 20 mm bore, 50 mm stroke, G1/8 port, and U flat-end back cover. The MSBL upgrades the body to a riveted rolling-packed design.
The usable push force (net of the return spring) is 12.6 N at 0.2 MPa, 44.0 N at 0.3 MPa, 75.4 N at 0.4 MPa, 106.8 N at 0.5 MPa, 138.2 N at 0.6 MPa, and 169.6 N at 0.7 MPa. The operating pressure range is 0.2-1.0 MPa, with a 0.2 MPa minimum required to overcome the spring.
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Drop-in Upgrade
The AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X50U replaces this model 1:1.
Fast Dispatch
MSBL replacements usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
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