Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X75U
The AirTAC Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X75U is a genuine single acting, push (spring return) aluminum-barrel mini round cylinder with a Ø40mm bore and 75mm 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
- Stroke75 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 MSBL40X75U
The AirTAC MSBL40X75U is a compact single-acting push-type mini cylinder with a 40mm bore and 75mm 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 when air is released. The U suffix denotes a flat-end rigid back cover for straightforward inline mounting. Driven by a simple 3/2 valve, it uses a G1/4 port and a 16mm carbon-steel rod with 20 µm hard-chrome plating.
This model lacks the -S magnet option, so it cannot accept CMSG, DMSG, or EMSG position sensors. It relies on a fixed rubber bumper to soften end-of-stroke impact, as single-acting designs do not use adjustable air cushions. The riveted rolling-packed aluminum barrel and heterogeneous two-way grease-retaining piston seal ensure durable, leak-free operation in tight spaces.
Information Gain: 1) Because the return spring constantly opposes the air stroke, the usable push force is lower than a double-acting MBL40. 2) The minimum operating pressure is 0.2 MPa because the incoming air must first overcome the internal spring before any useful work begins.
Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X75U Technical Specifications
| Model | Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X75U |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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 MSBL40X75U
| MSBL | Single acting, push (spring return) aluminum-barrel mini cylinder. |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×75 | 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 MSBL40X75U Is Used
Stamping Press Ejector
Ejects small stamped metal parts from a die using 439.6 N at 0.5 MPa. The spring return guarantees the ejector pin clears the die on air loss, preventing press crashes.
Packaging Flap Folder
Folds cardboard flaps on a continuous carton sealer. The single-acting push stroke actuates the folder, while the fail-safe spring return retracts the arm instantly when the carton passes.
Woodworking Clamp
Holds a wooden workpiece against a router fence during machining. The 75mm stroke accommodates varying material thicknesses, and the flat-end U cover provides a rigid, stable mount.
Is the Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X75U the Right Cylinder?
At 0.5 MPa, this 40mm bore delivers 439.6 N of usable push force. If your task needs less force, step down to the 32mm bore (281.3 N at 0.5 MPa); if you need more, note that 40mm is the largest available MSBL single-acting bore, so exceeding 690.8 N at 0.7 MPa requires switching to a double-acting MBL40. Remember the 0.2 MPa minimum operating pressure to overcome the spring. For this 75mm stroke, side-load risks are moderate; use an external guide to prevent rod bending. The U flat-end back cover suits rigid inline mounting, whereas a CA pivot cover better suits arcing loads. This PT-threaded SKU lacks the -S magnet, meaning no position sensing is possible without swapping to an -S variant. Never apply external load during the spring return stroke, as the return force is small and meant only to retract the rod.
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 MSBL40X75U FAQ
The usable push force 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 (max 70.4 kgf). The minimum working pressure is 0.2 MPa because the air must first overcome the internal return spring.
No. This specific SKU lacks the built-in magnet (-S code), so it cannot accept AirTAC CMSG, DMSG, or EMSG sensor switches. If you need position feedback, select the MSBL40X75S variant instead. Additionally, the spring return provides a fail-safe retracted home on air loss, but it does not hold a mid-stroke load without air pressure.
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