Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X40CA
The AirTAC Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X40CA is a genuine single acting, push (spring return) aluminum-barrel mini round cylinder with a Ø40mm bore and 40mm 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
- Stroke40 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 MSBL40X40CA
The AirTAC MSBL40X40CA is a 40mm bore, single-acting push-type mini cylinder with a 40mm stroke. Compressed air extends the rod, while an internal spring retracts it, ensuring a fail-safe retracted home position on air loss. It delivers a usable push force of 439.6 N at 0.5 MPa. The CA back cover features a pivot clevis, allowing the cylinder to swing on a pin to absorb arcing and angular loads.
This SKU has no built-in magnet, so it cannot accept CMSG, DMSG, or EMSG position sensors. It uses a G1/4 port and a Ø16 mm carbon-steel rod with 20 µm hard-chrome plating. The riveted rolling-packed aluminum barrel and heterogeneous grease-retaining piston seal deliver compact durability. A fixed rubber bumper softens end-of-stroke impact, as single-acting cylinders lack adjustable air cushions.
Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X40CA Technical Specifications
| Model | Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X40CA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 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 MSBL40X40CA
| MSBL | Single acting, push (spring return) aluminum-barrel mini cylinder. |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×40 | 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 MSBL40X40CA Is Used
Stamping Press Ejector
Ejects stamped sheet metal parts from progressive dies. The 439.6 N push force at 0.5 MPa reliably knocks out the blank, while the spring return ensures the ejector pin clears the die on air loss.
Packaging Flap Folder
Folds carton side flaps on a continuous motion case packer. The CA pivot clevis accommodates the linkage arc as the flap closes, preventing side-load binding.
Woodworking Hold-Down
Applies 439.6 N of hold-down pressure on a router table fence. The fail-safe spring return lifts the clamp automatically if the air supply drops, preventing workpiece damage.
Is the Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X40CA the Right Cylinder?
At 439.6 N usable push force (0.5 MPa), this 40mm bore is the largest in the MSBL single-acting series. If you need less force, step down to the 32mm bore, which provides 281.3 N at 0.5 MPa. Because 40mm is the maximum size, there is no larger single-acting MSBL option; for higher push forces, consider a double-acting MBL cylinder. Remember that the return spring opposes the air stroke, so the net push force is lower than a double-acting MBL of the same bore.
A minimum operating pressure of 0.2 MPa is required to overcome the spring before the rod extends. Never apply an external load during the spring return stroke, as the small return force is only meant to retract the rod itself. The CA pivot mounting is ideal for linkages with side-play. This model uses a PT tapered port thread and a 40mm stroke, which is well within the 150mm standard limit and short enough to avoid rod bending issues.
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 MSBL40X40CA FAQ
The usable push force (net of the return spring) is 62.8 N at 0.2 MPa, 188.4 N at 0.3 MPa, 314.0 N at 0.4 MPa, 439.6 N at 0.5 MPa, 565.2 N at 0.6 MPa, and 690.8 N at 0.7 MPa (approx 70.4 kgf max). The operating pressure range is 0.2-1.0 MPa, with a 0.2 MPa minimum required to overcome the internal spring.
No, the MSBL40X40CA lacks the built-in -S magnet, so it cannot accept AirTAC CMSG (reed) or DMSG/EMSG (electronic) sensor switches. If you need rod-position detection, select the MSBL40X40SCA variant instead.
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