Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X80SCA
The AirTAC Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X80SCA is a genuine single acting, push (spring return) aluminum-barrel mini round cylinder with a Ø40mm bore and 80mm stroke, G1/4 air ports and a fixed rubber bumper. Air drives the push (work) stroke and the spring returns the rod — it rests retracted on air loss.
- BoreØ40 mm
- Stroke80 mm
- Port sizeG1/4
- Acting typeSingle acting, push (spring return)
- Rod threadM12×1.25
- CushionFixed rubber bumper
About the Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X80SCA
The AirTAC MSBL40X80SCA is a compact single-acting push-type mini cylinder with an 80mm stroke. Air extends the rod to deliver 439.6 N of usable push force at 0.5 MPa, while an internal spring retracts it to a fail-safe home position when air is removed. The 40mm bore uses a G1/4 port and a 16mm carbon-steel rod plated with 20 µm hard chrome for wear resistance. This SKU includes a built-in magnet (-S) for CMSG reed or DMSG/EMSG electronic sensors, and a CA pivot back cover for arcing loads.
Because the return spring opposes the air stroke, the net push force is lower than a double-acting MBL of the same size. The cylinder relies on a fixed rubber bumper to soften end impacts rather than an adjustable air cushion. Its riveted rolling-packed aluminum barrel keeps the body light for tight machinery spaces. Operating pressure spans 0.2-1.0 MPa, requiring a minimum of 0.2 MPa to overcome the spring before generating thrust.
Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X80SCA Technical Specifications
| Model | Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X80SCA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 mm |
| Acting type | Single acting, push (spring return) |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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. Thread options: PT / G / NPT.
Usable Push Force (Ø40mm)
| Pressure | Push force (net of spring) |
|---|---|
| 0.5 MPa | 439.6 N |
| 0.7 MPa | 690.8 N |
These are the usable single-acting forces after the return spring — lower than a same-bore double-acting MBL. Size with a margin.
Model Code: Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X80SCA
| MSBL | Single acting, push (spring return) aluminum-barrel mini cylinder. |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×80 | Stroke length in mm. |
| S | Optional built-in magnet for a CMSG/DMSG/EMSG sensor switch. |
| CA / U | Back cover: CA pivot (clevis) or U flat-end. |
Related: MTBL (single-acting pull), MBL/MBLC (double acting), MBLD (double rod).
Where the Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X80SCA Is Used
Stamping Press Ejection
Ejects formed sheet metal parts from a stamping die using 439.6 N of push force at 0.5 MPa, with the spring ensuring the rod retracts clear of the tool before the next cycle.
Packaging Flap Folding
Pushes cardboard carton flaps down during case sealing, where the CA pivot accommodates the arcing motion of the packaging linkage arm.
Woodworking Clamp Release
Holds a wooden workpiece under air pressure for routing, then safely releases it to a defined home position on air loss using the fail-safe spring return.
Is the Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X80SCA the Right Cylinder?
To size this 40mm bore correctly, note that stepping down to the 32mm bore drops your 0.5 MPa push force to 281.3 N, while stepping up is not an option as 40mm is the largest single-acting MSBL size available. The 0.2 MPa minimum operating pressure is critical; below this, the air cannot overcome the return spring to move the rod. The CA pivot back cover swings on a pin to accommodate angular misalignment, which is ideal for linkages but differs from a rigid U flat-end cover. The default PT thread form provides a tapered seal. For an 80mm stroke on a 16mm rod, avoid side-loading the rod; use an external guide to prevent binding and premature seal wear. The -S magnet enables position detection, but remember the fixed rubber bumper is not a lock—it will not hold a mid-stroke load without continuous air pressure. Never apply external load during the spring return stroke, as the spring only retracts the rod itself.
Quick checklist
- ✓ Usable push force at your pressure (min 0.2 MPa)
- ✓ Fail-safe rest position (retracted)
- ✓ No external load on the spring return stroke
- ✓ Magnet (S) for sensors?
- ✓ Side load — consider a guided cylinder
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 Use the correct mounting accessory (LB / FA / SDB) and back cover (CA / U).
- check Installation by qualified personnel per AirTAC docs.
Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X80SCA FAQ
The usable push force is 439.6 N at 0.5 MPa and 690.8 N at 0.7 MPa. The minimum operating pressure is 0.2 MPa because the air must first overcome the internal return spring before generating any outward push force.
The CA back cover is a pivot clevis that swings on a pin to absorb arcing or angular loads, unlike a rigid flat cover. The -S code means a built-in magnet is fitted, allowing you to mount CMSG reed switches or DMSG/EMSG solid-state sensors for exact rod position detection.
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