Airtac MBL Aluminum Alloy Mini Cylinder MBL40X40SU
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL40X40SU is a genuine double-acting aluminum-barrel mini round cylinder with a Ø40mm bore and 40mm stroke, G1/4 air ports and a fixed rubber bumper. Its compact riveted body suits push, hold and clamp motion in tight machine spaces.
- BoreØ40 mm
- Stroke40 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionRubber bumper (MBLC variant: adjustable air cushion)
About the Airtac MBL Aluminum Alloy Mini Cylinder MBL40X40SU
The AirTAC MBL40X40SU is a compact double-acting aluminum mini round cylinder engineered for tight machine spaces where a larger profile body will not fit. At 40mm bore, it delivers a solid 628N push force at 0.5MPa, making it well-suited for medium-duty clamping and ejection tasks within a short 40mm stroke. The riveted rolling-packed barrel crimps the front and rear covers directly to the tube, yielding a light, low-footprint housing that is not designed to be disassembled like a traditional tie-rod cylinder.
This specific SKU features a U flat-end back cover for rigid, fixed mounting and includes a built-in magnet (-S) for non-contact position detection. The internal heterogeneous two-way piston seal actively retains grease for long service life, while the carbon-steel piston rod is protected by a 20um hard-chrome plating to resist wear and corrosion. It relies on a fixed rubber bumper to soften end-of-stroke impact rather than an adjustable cushion.
Airtac MBL Aluminum Alloy Mini Cylinder MBL40X40SU Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL40X40SU |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Rubber bumper (MBLC variant: adjustable air cushion) |
| Max stroke | Up to 500 mm |
Specifications follow the official AirTAC MBL series datasheet. Confirm against the product label before installation. Standard stroke to 500 mm (special order to 800 mm). Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MBL Aluminum Alloy Mini Cylinder MBL40X40SU
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 40 | Bore size in mm. |
| ×40 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related variants: MBLC (adjustable cushion), MBLD (double rod), MBLJ (adjustable stroke), MSBL/MTBL (single acting).
Where the Airtac MBL Aluminum Alloy Mini Cylinder MBL40X40SU Is Used
Injection Mold Ejection
Provides 528N pull force at 0.5MPa to reliably eject small plastic parts from tight injection mold tooling within a 40mm stroke.
Packaging Line Diverter
Uses its 628N push force to deflect small cardboard cartons on a high-speed conveyor where the compact 40mm bore saves valuable machine deck space.
PCB Test Fixture Clamp
Holds delicate circuit boards firmly in place during automated functional testing, utilizing the integrated -S magnet for precise CMSG reed switch position feedback.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL40X40SU the Right Cylinder?
If you need slightly less force, step down to the 32mm bore (402N push @0.5MPa); if your application requires heavier thrust, step up to the 50mm bore (981N push @0.5MPa). For faster or heavier moving loads that need end-of-stroke deceleration, select the MBLC variant with its adjustable air cushion. To hold a load in place without live air pressure, note that this base MBL drifts when exhaust or valve pressure is lost—install an external rod lock or pilot-operated check valve. The exact replacement match for this unit is: 40mm bore, 40mm stroke, G1/4 port, PT thread form, U flat-end back cover, and an -S built-in magnet.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ 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 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (LB / FA / SDB) and back cover (CA pivot / U flat-end).
- check Installation by qualified personnel per AirTAC docs.
Airtac MBL Aluminum Alloy Mini Cylinder MBL40X40SU FAQ
At 0.5MPa it provides 628N push and 528N pull force. At 0.7MPa the push force is 880N, with a theoretical maximum of 128kgf at 1.0MPa. The double-acting speed range is 30-800mm/s.
The base MBL uses a fixed rubber bumper to soften end-of-stroke impact, not an adjustable air cushion (for that, choose the MBLC variant). This SKU includes the -S magnet, allowing you to mount CMSG reed or DMSG/EMSG electronic sensor switches for rod position detection.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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