Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X75SCA
The AirTAC Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X75SCA 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 MSBL40X75SCA
The AirTAC MSBL40X75SCA is a 40mm bore, 75mm stroke single-acting push-type mini cylinder. Air extends the rod to drive the work stroke, while an internal mechanical spring retracts it upon venting, guaranteeing a fail-safe retracted home position during air loss. As the largest available MSBL bore, it delivers a robust usable push force of 439.6 N at 0.5 MPa and 690.8 N at 0.7 MPa, providing substantial clamping pressure for a compact aluminum body.
This specific SKU includes a built-in magnet (-S) for rod position detection using AirTAC CMSG (reed), DMSG, or EMSG (solid-state electronic) switches. The CA back cover equips the cylinder with a pivot/clevis mount, allowing the body to swing on a pin to safely absorb arcing and angular loads during the 75mm stroke. Unlike double-acting MBL models, this unit requires only a single air line driven by a 3/2 solenoid valve, simplifying plumbing and wiring. It relies on a fixed rubber bumper at the end of stroke to soften impact, as single-acting cylinders do not feature adjustable air cushions.
Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X75SCA Technical Specifications
| Model | Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X75SCA |
|---|---|
| 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 MSBL40X75SCA
| 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 MSBL40X75SCA Is Used
Sheet Metal Stamping
Exerts 690.8 N at 0.7 MPa to hold sheet metal blanks securely in progressive stamping dies, relying on the spring to release the clamp instantly when air is vented.
PCB Test Fixture
Pushes an electronic test probe head onto populated circuit boards; the -S magnet works with a DMSG solid-state switch to confirm the 75mm stroke is fully extended before testing begins.
Pivoting Gate Diverter
Actuates a swinging conveyor guide arm using the CA pivot cover to accommodate the arcing motion, safely returning the diverter to its home position on air loss to prevent jamming.
Is the Airtac MSBL Aluminum Alloy Mini Cylinder MSBL40X75SCA the Right Cylinder?
When sizing this 40mm bore model, step down to the 32mm MSBL (which yields 281.3 N at 0.5 MPa) if your clamping force is excessive, or consider it the top tier if you need maximum push within the MSBL series. Because the return spring opposes the air stroke, the usable push force is lower than a double-acting MBL; if your process requires powered force in both directions, switch to an MBL or MBLC. A minimum operating pressure of 0.2 MPa is mandatory to overcome the return spring before any work begins. Never apply an external load during the spring return stroke, as the spring force is small and only meant to retract the rod itself. For exact replacement, match the 40mm bore, 75mm stroke, G1/4 port, PT thread, CA pivot back cover, and -S magnet. At 75mm stroke, side-load and rod bending risks are minimal, but for long 100mm+ strokes, utilize the CA pivot or an external guide to manage deflection.
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 MSBL40X75SCA FAQ
The usable push force, already net of the return spring, is 62.8 N at 0.2 MPa, 314.0 N at 0.4 MPa, 439.6 N at 0.5 MPa, and 690.8 N at 0.7 MPa (maximum kgf is roughly 70.4). The operating pressure range is 0.2-1.0 MPa, requiring a minimum of 0.2 MPa to overcome the internal spring.
Air extends the rod for the work stroke, and when air is released, the internal spring retracts the rod to a defined fail-safe home. The CA back cover is a pivot/clevis mount that allows the cylinder body to swing on a pin, making it ideal for applications with arcing or angular loads. Note that you must not apply external load during the spring return stroke.
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