Airtac MBL Aluminum Alloy Mini Cylinder MBL40X125SCA
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL40X125SCA is a genuine double-acting aluminum-barrel mini round cylinder with a Ø40mm bore and 125mm 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
- Stroke125 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 MBL40X125SCA
The AirTAC MBL40X125SCA is a compact double-acting aluminum mini round cylinder engineered for tight machine spaces. Operating at 0.5 MPa, it delivers 628 N of push force and 528 N of pull force across its 125 mm stroke, making it a robust choice for mid-range actuation. The riveted rolling-packed barrel design keeps the body lightweight and sealed permanently, meaning it is not built to be disassembled like a traditional tie-rod cylinder.
This specific SKU includes a CA pivot (clevis) back cover that swings on a pin to accommodate arcing or angular loads, along with a built-in magnet (-S) for position detection. The internal heterogeneous two-way piston seal retains grease for long service life, while the carbon steel rod features 20 um hard-chrome plating to resist wear and corrosion.
Airtac MBL Aluminum Alloy Mini Cylinder MBL40X125SCA Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL40X125SCA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 125 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 MBL40X125SCA
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 40 | Bore size in mm. |
| ×125 | 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 MBL40X125SCA Is Used
Packaging Flap Folding
Drives a pivoting arm to fold corrugated carton flaps, utilizing the 628 N push force and CA clevis to smoothly arc the mechanism without binding.
Sorter Diverter Gate
Actuates a routing gate on a logistics conveyor, where the 125 mm stroke provides ample travel and the CMSG/DMSG/EMSG magnet confirms gate position.
Pallet Component Pusher
Pushes lightweight pallet components into a staging area, relying on the 528 N retract force to reset the arm against spring tension in a confined cell.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL40X125SCA the Right Cylinder?
Selecting this 40 mm bore provides a significant step up from the 32 mm variant (which offers 402 N push at 0.5 MPa) without taking the footprint of the 50 mm bore (981 N push). The CA clevis mount is essential when your mechanism requires the cylinder to pivot during the stroke. Because this SKU lacks an adjustable air cushion and relies on a fixed rubber bumper, high-speed moves with heavy payloads should be evaluated for impact; stepping up to the MBLC variant provides an adjustable cushion screw for deceleration.
Note that a plain MBL does not hold its position or load when air pressure is lost or the valve is centered; the rod drifts or drops, as the rubber bumper only softens end-of-stroke impact and is not a lock. For exact replacement matching, verify the 40 mm bore, 125 mm stroke, G1/4 port size, PT thread form, CA pivot back cover, and the -S magnet requirement.
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 MBL40X125SCA FAQ
At 0.5 MPa, the push force is 628 N and the pull force is 528 N. At 0.7 MPa, the push force increases to 880 N. The maximum theoretical force is 128 kgf at 1.0 MPa. The operational speed range is 30-800 mm/s.
No, the base MBL uses a fixed rubber bumper to soften the end-of-stroke impact and does not feature an adjustable cushion screw. If your application requires adjustable air cushioning for heavier or faster loads, you should select the MBLC variant.
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