Airtac MBL Aluminum Alloy Mini Cylinder MBL40X250SCA
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL40X250SCA is a genuine double-acting aluminum-barrel mini round cylinder with a Ø40mm bore and 250mm 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
- Stroke250 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 MBL40X250SCA
The AirTAC MBL40X250SCA is a compact double-acting aluminum mini round cylinder engineered for tight machine spaces. Operating at 0.5 MPa, it generates 628 N of push force and 528 N of pull force, making it well-suited for moving heavier jigs over its 250 mm stroke. The riveted rolling-packed barrel crimps the front and rear covers directly to the tube, creating a lightweight, sealed body that is not designed to be disassembled like a traditional tie-rod cylinder.
This specific SKU includes a CA pivot back cover, allowing the cylinder to swing on a pin to accommodate arcing or angular loads during traversal. It also features a built-in magnet (-S) for position detection using AirTAC CMSG, DMSG, or EMSG sensor switches. To absorb end-of-stroke impact, the base MBL relies on a fixed rubber bumper rather than an adjustable air cushion. The carbon-steel piston rod features 20 µm hard-chrome plating, paired with a heterogeneous two-way piston seal that retains grease for extended operational life.
Airtac MBL Aluminum Alloy Mini Cylinder MBL40X250SCA Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL40X250SCA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 250 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 MBL40X250SCA
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 40 | Bore size in mm. |
| ×250 | 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 MBL40X250SCA Is Used
Pallet Diverter Arm
Swings a diverter gate across a conveyor belt using the 250 mm stroke and 628 N push force, with the CA pivot back cover absorbing the angular arc of the moving arm.
CNC Tool Changer
Indexes a tool carousel in a tight machining center envelope, relying on the -S magnet and a DMSG electronic sensor to confirm the 250 mm extension position.
Carton Push-off Mechanism
Pushes packaged goods from a roller bed onto a downstream belt, utilizing the 528 N pull force to retract the 40 mm bore cylinder rapidly for the next cycle.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL40X250SCA the Right Cylinder?
Selecting the MBL40X250SCA is ideal when your application requires the 628 N push force at 0.5 MPa alongside a pivoting rear mount. If your load is lighter, stepping down to the 32 mm bore yields 402 N of push force; if you need more power, stepping up to the 50 mm bore provides 981 N. Because this cylinder uses a fixed rubber bumper, applications requiring softer end-stopping or faster cycling should upgrade to the MBLC variant for its adjustable air cushion. Note that a plain MBL cannot hold its position if air pressure is lost or the valve is centered—the rod will drift. Use an external pilot-operated check valve or rod lock if load holding is required.
With a 250 mm stroke, the Ø16 mm rod is susceptible to bending under side loads. The CA pivot back cover on this model helps mitigate angular stress, but for rigid lateral loads, adding an external guide rail or switching to the MBLD double-rod anti-rotation type is strongly recommended. This SKU uses a G1/4 port with PT thread form and an M12x1.25 rod-end thread.
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 MBL40X250SCA 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 theoretical maximum force is 128 kgf at 1.0 MPa. The operating speed ranges from 30-800 mm/s.
No, the base MBL40X250SCA uses a fixed rubber bumper to absorb end-of-stroke impact, not an adjustable cushion screw. If your application requires adjustable air cushioning for heavier or faster moving loads, you should select the MBLC variant instead.
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