Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X50CA
The AirTAC Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X50CA is a genuine single acting, push (spring return) aluminum-barrel mini round cylinder with a Ø40mm bore and 50mm 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
- Stroke50 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 MSBL40X50CA
The AirTAC MSBL40X50CA is a compact, single-acting push-type mini cylinder where air extends the rod and an internal spring retracts it. As the largest bore in this series, it yields a usable push force of 439.6 N at 0.5 MPa and 690.8 N at 0.7 MPa. The 50 mm stroke is well-suited for high-force clamping or ejection in tight spaces.
This configuration features a CA pivot/clevis back cover designed to swing on a pin, accommodating arcing or angular loads. Because it lacks the -S code, it has no built-in magnet and cannot accept a CMSG or DMSG position sensor. The riveted rolling-packed aluminum barrel and 20 µm hard-chrome plated carbon-steel rod ensure durability, while a fixed rubber bumper absorbs end-of-stroke impact.
Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X50CA Technical Specifications
| Model | Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X50CA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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 MSBL40X50CA
| MSBL | Single acting, push (spring return) aluminum-barrel mini cylinder. |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×50 | 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 MSBL40X50CA Is Used
Press Die Ejection
Ejects stamped metal blanks from a 40-ton press die using 439.6 N of push force at 0.5 MPa, with the spring safely retracting the rod clear of the tooling between cycles.
Pivoting Parts Clamp
Secures irregular castings on a machining fixture via the CA pivot back cover, allowing the clevis to swing and accommodate angular alignment during the 50 mm clamping stroke.
Packaging Flap Folder
Folds heavy cardboard carton flaps on a packaging line; air extends the rod to push the flap down, and the spring ensures a fail-safe retracted home position if air pressure drops.
Is the Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X50CA the Right Cylinder?
When sizing this MSBL40X50CA, note that the return spring opposes the air stroke, making the usable push force lower than a same-bore double-acting MBL. If you need less force, step down to the 32 mm bore, which provides 281.3 N at 0.5 MPa. If you need force in both directions or a powered retract, consider the double-acting MBL, or the MTBL if you need air to pull and a spring to extend. Operating pressure must be at least 0.2 MPa to overcome the spring. Apply no external load during the spring return stroke, as the return force is small and only meant to retract the rod itself. To replace this exact unit, match the 40 mm bore, 50 mm stroke, G1/4 port, PT thread, CA pivot back cover, and no magnet.
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 MSBL40X50CA FAQ
The MSBL40X50CA provides a usable push force of 439.6 N at 0.5 MPa and 690.8 N at 0.7 MPa (maximum 70.4 kgf). Because air must first overcome the internal return spring, the minimum operating pressure is 0.2 MPa, with a maximum range of 1.0 MPa.
No, this specific SKU lacks the -S code for a built-in magnet, so it cannot be used with AirTAC CMSG (reed) or DMSG/EMSG (electronic) sensor switches. You would need the MSBL40X50SCA variant to enable rod-position detection.
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