Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X30CA
The AirTAC Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X30CA is a genuine single acting, push (spring return) aluminum-barrel mini round cylinder with a Ø40mm bore and 30mm 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
- Stroke30 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 MSBL40X30CA
The AirTAC MSBL40X30CA is a compact single-acting push-type mini cylinder with a 40 mm bore and 30 mm stroke. Air extends the rod to drive the work, while an internal spring retracts it, providing a fail-safe home position on air loss. As the largest standard MSBL bore, it yields a usable push force of 439.6 N at 0.5 MPa and 690.8 N at 0.7 MPa. The 40 mm bore uses a G1/4 port and a 16 mm hard-chrome carbon-steel rod with an M12x1.25 end thread.
This SKU features a CA pivot/clevis back cover, allowing the body to swing on a pin to absorb arcing or angular loads. It lacks the -S magnet option, so it cannot accept a CMSG reed or DMSG electronic sensor. The riveted rolling-packed aluminum barrel and heterogeneous grease-retaining seal keep out debris in tight spaces. A fixed rubber bumper softens the end-of-stroke impact, as single-acting designs do not use adjustable air cushions.
Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X30CA Technical Specifications
| Model | Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X30CA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 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 MSBL40X30CA
| MSBL | Single acting, push (spring return) aluminum-barrel mini cylinder. |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×30 | 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 MSBL40X30CA Is Used
Stamping Press Ejector
Ejects small stamped metal parts from a 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.
Pivotal Part Diverter
Pushes a hinged gate to sort items on a packaging line; the CA pivot back cover accommodates the arcing motion without binding the 16 mm rod.
Woodworking Clamp
Holds a wooden workpiece against a router fence during the cut. Air loss drops the clamp via the return spring, creating a safe, defined rest state.
Is the Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X30CA the Right Cylinder?
Sizing around this 40 mm bore is straightforward since it is the largest available in the MSBL series. If 439.6 N at 0.5 MPa is excessive, step down to the 32 mm bore, which provides 281.3 N at 0.5 MPa. If you need force in both directions or must hold a load mid-stroke, a double-acting MBL is required, as the MSBL spring only retracts the rod and cannot resist external loads during the return stroke. The minimum operating pressure is 0.2 MPa to overcome the return spring.
For replacement, match the 40 mm bore, 30 mm stroke, G1/4 port, PT thread, CA pivot back cover, and confirm no magnet is fitted. The CA clevis is ideal for linkages where the cylinder must articulate; if your mount is rigid, switch to a U flat-end cover. Even at 30 mm stroke, side loads can accelerate seal wear, so use external guides to keep the rod straight.
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 MSBL40X30CA FAQ
The usable push force is 439.6 N at 0.5 MPa and 690.8 N at 0.7 MPa. The operating pressure range is 0.2-1.0 MPa. A minimum of 0.2 MPa is required because the air must first overcome the internal return spring before generating outward force.
No. This SKU lacks the -S code for a built-in magnet, so it cannot accept CMSG reed or DMSG solid-state sensors. If position detection is required, select an MSBL40X30SCA variant or use an external mechanical switch.
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