This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X45U — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X45U 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 MSAL20X45U
The AirTAC Airtac MSAL Front Single Acting Compact Cylinder MSAL20X45U is a single acting, push (spring return) aluminum-barrel mini cylinder with a Ø20mm bore and 45mm 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 AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X45U.
- BoreØ20 mm
- Stroke45 mm
- Port sizeG1/8
- Acting typeSingle acting, push (spring return)
- Rod threadM8×1.25
- StatusDiscontinued → AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X45U
About the Airtac MSAL Front Single Acting Compact Cylinder MSAL20X45U
The AirTAC MSAL20X45U is a discontinued single-acting push cylinder with a 20mm bore and 45mm stroke. Air extends the rod to do work, while an internal spring retracts it for a fail-safe home on air loss. This bore delivers 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 MSBL20X45U.
This SKU uses a G1/8 port, an 8mm rod with an M8x1.25 end thread, and a flat-end U back cover. It has no magnet, so it cannot take a position sensor. The original MSAL has threaded covers, while the MSBL replacement uses a riveted rolling-packed body. End-of-stroke energy is absorbed by a fixed rubber bumper, not an adjustable cushion.
Airtac MSAL Front Single Acting Compact Cylinder MSAL20X45U Technical Specifications
| Model | Airtac MSAL Front Single Acting Compact Cylinder MSAL20X45U |
|---|---|
| Series | MAL single-acting mini cylinder (discontinued) |
| Replacement | AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X45U |
| Bore size | Ø20 mm |
| Stroke | 45 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 AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X45U 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 MSAL20X45U
| MSAL | Single acting, push (spring return) aluminum-barrel mini cylinder (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×45 | 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 MSAL20X45U Is Used
PCB Ejector
Pushes finished circuit boards out of an assembly fixture with 106.8 N at 0.5 MPa, relying on the spring to retract safely when air drops.
Foam Carton Flap
Holds a packaging flap open during product drop, then releases and returns home via the internal spring to prevent crushing.
Sorter Diverter
Momentarily blocks items on a conveyor lane; the fail-safe retracted home clears the path on air loss to prevent jams.
Replacing the Airtac MSAL Front Single Acting Compact Cylinder MSAL20X45U with AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X45U
Replace the MSAL20X45U with the MSBL20X45U, confirming the 20mm bore, 45mm stroke, G1/8 port, PT thread, and U back cover match. Because this SKU lacks the -S magnet, it cannot take a sensor; the MSBL upgrade also changes the switch family from CS1-M/DS1-M to CMSG/DMSG/EMSG if you later need sensing. Operating pressure must stay above 0.2 MPa to beat the return spring, and you must apply no external load on the return stroke.
For sizing, step down to the smaller bore if available, or step up to the 25mm bore, which provides 176.4 N at 0.5 MPa. At 45mm stroke on this small bore, watch for side-load and rod-bending to protect the guide.
Upgrade checklist
- ✓ Order the AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X45U (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 AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X45U instead of this discontinued model.
Airtac MSAL Front Single Acting Compact Cylinder MSAL20X45U FAQ
Yes, the MSAL20X45U is discontinued. The exact drop-in replacement is the MSBL20X45U, which matches the 20mm bore, 45mm stroke, G1/8 port, U cover, and single-acting push function.
The usable push force is 106.8 N at 0.5 MPa and 169.6 N at 0.7 MPa. Minimum operating pressure is 0.2 MPa because the air must overcome the return spring.
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Genuine AirTAC parts produced by AirTAC factory.
Drop-in Upgrade
The AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X45U 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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