This model is discontinued
AirTAC has phased out the MSAL series. You can still order this code here: we ship the direct replacement MSBL20X40U, with the same bore, stroke, output force, port and mounting, so it fits the same application. 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 MSAL20X40U
The AirTAC Airtac MSAL Front Single Acting Compact Cylinder MSAL20X40U is a single acting, push (spring return) aluminum-barrel mini cylinder with a Ø20mm bore and 40mm 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 direct replacement is the AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X40U.
- BoreØ20 mm
- Stroke40 mm
- Port sizeG1/8
- Acting typeSingle acting, push (spring return)
- Rod threadM8×1.25
- StatusDiscontinued → AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X40U
- 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 MSAL Front Single Acting Compact Cylinder MSAL20X40U
The AirTAC MSAL20X40U is a discontinued single-acting push, spring-return mini cylinder. Air extends the rod for the 40 mm work stroke, and an internal spring retracts it when air is released, providing a fail-safe retracted home on air loss. The 20 mm bore uses an 8 mm rod, an M8x1.25 rod-end thread, and a PT G1/8 port. Usable push force is 106.8 N at 0.5 MPa and 169.6 N at 0.7 MPa, net of the return spring.
The direct replacement is the MSBL20X40U, matching the bore, stroke, force, port, and U flat-end back cover. This MSAL has threaded covers, while the MSBL uses a riveted rolling-packed body. Because this SKU lacks the -S magnet, it cannot take a position sensor. The fixed rubber bumper absorbs end-of-stroke impact; there is no adjustable cushion. Minimum working pressure is 0.2 MPa.
Airtac MSAL Front Single Acting Compact Cylinder MSAL20X40U Technical Specifications
| Model | Airtac MSAL Front Single Acting Compact Cylinder MSAL20X40U |
|---|---|
| Series | MAL single-acting mini cylinder (discontinued) |
| Replacement | AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X40U |
| Bore size | Ø20 mm |
| Stroke | 40 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 AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X40U 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 MSAL20X40U
| MSAL | Single acting, push (spring return) aluminum-barrel mini cylinder (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×40 | 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 MSAL20X40U Is Used
PCB Edge Clamping
Pushes 106.8 N at 0.5 MPa to hold a circuit board edge during routing, with the spring safely retracting the pin when air drops.
Packaging Flap Deflector
Extends 40 mm to redirect carton flaps on a packaging line, relying on the fail-safe retracted home to clear the conveyor path.
Light Part Ejector
Kicks small plastic mouldings out of a machining fixture using 169.6 N at 0.7 MPa, letting the internal spring pull back instantly.
Replacing the Airtac MSAL Front Single Acting Compact Cylinder MSAL20X40U with AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X40U
Replace this MSAL20X40U with the MSBL20X40U. Confirm the 20 mm bore, 40 mm stroke, PT G1/8 port, M8x1.25 rod thread, and the rigid U flat-end back cover. Because this SKU has no -S magnet, it cannot mount a sensor; if you need sensing, step up to an MSBL20X40US and use CMSG, DMSG, or EMSG switches instead of the older CS1-M/DS1-M. Maintain a 0.2 MPa minimum pressure to overcome the return spring, and apply no external load on the return stroke.
For sizing, step down if you need less force, though 20 mm is the smallest standard bore. Step up to the 25 mm bore if you need more clamping power, which provides 176.4 N at 0.5 MPa. For this 40 mm stroke on a small 20 mm bore, keep the load guided to prevent rod bending and side-load damage.
Upgrade checklist
- ✓ Order the AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X40U (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 AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X40U instead of this discontinued model.
Airtac MSAL Front Single Acting Compact Cylinder MSAL20X40U FAQ
Yes, the MSAL20X40U is discontinued. The direct replacement is the MSBL20X40U, which matches the 20 mm bore, 40 mm stroke, PT G1/8 port, U flat-end cover, and force class. The MSBL upgrades the body to a riveted rolling-packed design instead of threaded covers.
The usable push force, net of the return spring, is 12.6 N at 0.2 MPa, 106.8 N at 0.5 MPa, and 169.6 N at 0.7 MPa. The maximum push force is roughly 17.3 kgf at 0.7 MPa. You must maintain a minimum 0.2 MPa operating pressure to ensure air overcomes the internal spring.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The AIRTACMSBLFRONTSINGLEACTINGCOMPACTCYLINDERMSBL20X40U replaces this model 1:1.
Fast Dispatch
MSBL replacements are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Recommended MSBL Replacements
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