Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X75SU
The AirTAC Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X75SU 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 MSBL40X75SU
The AirTAC MSBL40X75SU is a 40mm bore, 75mm stroke single-acting push cylinder with a spring return. Air extends the rod to deliver 439.6 N of usable push force at 0.5 MPa, while an internal spring retracts it when air is released. This fail-safe home state ensures the cylinder safely defaults to its retracted position during a loss of air pressure. The riveted rolling-packed aluminum barrel keeps the body compact for tight machinery spaces.
This SKU includes a built-in magnet (-S) for position detection and uses a U flat-end back cover for rigid rear mounting. Unlike double-acting cylinders, it requires only a 3/2 solenoid valve and a single air line, simplifying plumbing. The 16mm hard-chrome carbon steel rod resists wear, and a fixed rubber bumper absorbs end-of-stroke impact without the need for adjustable cushions. Note that the return spring is designed only to retract the rod itself; do not apply external loads during the return stroke.
Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X75SU Technical Specifications
| Model | Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X75SU |
|---|---|
| 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 MSBL40X75SU
| 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 MSBL40X75SU Is Used
Sheet Metal Stamping Ejector
Uses the 439.6 N push force at 0.5 MPa to eject stamped aluminum panels from a die, with the spring return ensuring the ejector pin retracts safely on air loss.
Woodworking Clamp
Holds wooden cabinet frames steady during routing operations; the single-acting design guarantees the clamp releases to a fail-safe home position if the air supply drops.
Packaging Flap Folder
Pushes corrugated carton flaps down at 75mm stroke on a packaging line, relying on the fixed rubber bumper to soften the impact without needing complex adjustment.
Is the Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X75SU the Right Cylinder?
At 0.5 MPa, this 40mm bore yields 439.6 N of push force. If your application requires less force, stepping down to the 32mm bore provides 281.3 N at the same pressure. As the largest available single-acting MSBL size, there is no larger bore to step up to; if you need more push force than the 690.8 N provided at 0.7 MPa, a double-acting MBL cylinder is required. Remember that the minimum operating pressure is 0.2 MPa to overcome the return spring.
When replacing this unit, match the 40mm bore, 75mm stroke, G1/4 port, PT thread, U flat-end back cover, and -S magnet. The 75mm stroke is moderate for this bore, but always use external guides to prevent rod bending under side loads. The -S magnet supports AirTAC CMSG (reed), DMSG, and EMSG (electronic) sensor switches.
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 MSBL40X75SU FAQ
The usable push force is 439.6 N at 0.5 MPa and 690.8 N at 0.7 MPa (equivalent to roughly 70.4 kgf). The operating pressure range is 0.2-1.0 MPa, with a 0.2 MPa minimum required to overcome the internal return spring.
Air extends the rod, while the internal spring retracts it to a fail-safe home position when air is released; do not apply external loads during this return stroke. The built-in magnet (-S) allows CMSG reed or DMSG/EMSG electronic sensors to detect rod position.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Mini Cylinders
Request a Quote for Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X75SU
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.