Airtac MBL Aluminum Alloy Mini Cylinder MBL40X125SCAH
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL40X125SCAH 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 MBL40X125SCAH
The AirTAC MBL40X125SCAH is a compact double-acting aluminum mini round cylinder engineered for tight machine spaces. It delivers a robust 628 N push force at 0.5 MPa, making it well-suited for mid-range actuation over its 125 mm stroke. The riveted rolling-packed barrel crimps the front and rear covers directly to the tube, yielding a lightweight body that is not designed to be disassembled like a traditional tie-rod cylinder.
This specific SKU features a CA pivot (clevis) back cover, allowing the cylinder body to swing on a pin to safely accommodate arcing or angular loads. It includes a built-in magnet (-S) for compatibility with AirTAC CMSG, DMSG, and EMSG sensor switches to track rod position. The carbon-steel piston rod is protected by a 20 um hard-chrome plating for high wear and corrosion resistance, while a heterogeneous two-way piston seal retains grease for a long service life.
Airtac MBL Aluminum Alloy Mini Cylinder MBL40X125SCAH Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL40X125SCAH |
|---|---|
| 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 MBL40X125SCAH
| 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 MBL40X125SCAH Is Used
Textile Loom Guide Arms
Leverages the 628 N push force and CA pivot back cover to articulate guide arms on textile looms, absorbing angular stress during high-speed weaving operations.
Packaging Sorter Diverter
Drives a 125 mm stroke diverter gate on a packaging conveyor, using the built-in magnet and DMSG solid-state sensor to confirm paddle position for the PLC.
Warehouse Tray Pusher
Pushes cardboard trays into case erectors in tight warehouse layout spaces, relying on the 20 um chrome-plated rod to resist scuffing in dusty environments.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL40X125SCAH the Right Cylinder?
If you need slightly less force, step down to the 32 mm bore (402 N push at 0.5 MPa); if your application requires more power, step up to the 50 mm bore (981 N push at 0.5 MPa). Because this base MBL uses a fixed rubber bumper rather than an adjustable air cushion, you should select the MBLC variant if your 125 mm stroke demands softer end-of-travel deceleration for heavier moving masses. Note that a plain MBL does not hold its load or position when air pressure is lost or the valve is centered—the rod will drift or drop. If gravity or load holding is a concern, install an external rod lock or a pilot-operated check valve. Replacement match: 40 mm bore, 125 mm stroke, G1/4 port, PT thread, CA pivot back cover, magnet included.
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 MBL40X125SCAH FAQ
At 0.5 MPa, this 40 mm bore cylinder provides 628 N push force and 528 N pull force. At 0.7 MPa, the push force is 880 N, with a maximum theoretical force of 128 kgf at 1.0 MPa. It uses a Ø16 mm carbon steel rod with an M12x1.25 rod-end thread.
The base MBL uses a fixed rubber bumper to soften end-of-stroke impact; it is not an adjustable air cushion (for that, choose the MBLC variant). The CA back cover is a pivot/clevis type that allows the cylinder body to swing on a pin, making it ideal for arcing loads and angular movements.
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