Airtac MBL Aluminum Alloy Mini Cylinder MBL25X40U
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL25X40U is a genuine double-acting aluminum-barrel mini round cylinder with a Ø25mm bore and 40mm stroke, G1/8 air ports and a fixed rubber bumper. Its compact riveted body suits push, hold and clamp motion in tight machine spaces.
- BoreØ25 mm
- Stroke40 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionRubber bumper (MBLC variant: adjustable air cushion)
About the Airtac MBL Aluminum Alloy Mini Cylinder MBL25X40U
The AirTAC MBL25X40U is a double-acting aluminum mini round cylinder engineered for tight machine spaces. With a 25mm bore and 40mm stroke, it yields 245N push and 206N pull force at 0.5 MPa. The U flat-end back cover provides a rigid fixed rear mounting surface for straightforward in-line placement. This genuine AirTAC component operates via a G1/8 port and a Ø10mm carbon steel piston rod.
Unlike tie-rod bodies, the MBL barrel uses a riveted rolling-packed construction that crimps the covers to the tube for minimal weight. The rod features 20µm hard-chrome plating for wear resistance, paired with a heterogeneous two-way piston seal that retains grease for extended service life. This SKU lacks the -S suffix, meaning no magnet is built in and a position sensor cannot be fitted. End-stroke energy is absorbed by a fixed rubber bumper, not an adjustable cushion.
Airtac MBL Aluminum Alloy Mini Cylinder MBL25X40U Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL25X40U |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø25 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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 (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | — |
| Max (@1.0 MPa) | 50 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 MBL25X40U
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 25 | 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 MBL25X40U Is Used
PCB Router Z-Axis Gate
Actuates a lightweight safety cover on a desktop PCB routing machine, using its 245N thrust to ensure the guard is fully closed before the spindle starts.
Thermoformed Tray Stacker
Pushes thin plastic trays into a vertical stacking magazine, where the 40mm stroke and rigid U flat-end mount keep the indexing stroke compact and true.
Microplate Shuttle Stop
Deploys a hard stop for a 96-well microplate shuttle in an automated assay analyzer, relying on the 206N pull force to retract the stop clear of the moving tray.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL25X40U the Right Cylinder?
For lighter duty, the Ø20mm bore provides 157N push at 0.5 MPa; for heavier loads, step up to the Ø32mm bore which provides 402N push. If your cycle requires adjustable end-cushioning for faster speeds, select the MBLC variant. Because this is a double-acting cylinder, it will not hold a load if air pressure drops or the valve is centered—an external rod lock or pilot-operated check valve is required for fail-safe positioning.
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 MBL25X40U FAQ
At 0.5 MPa it generates 245N push and 206N pull force; at 0.7 MPa push increases to 343N, with a maximum theoretical force of 50 kgf at 1.0 MPa. It uses a Ø10mm carbon steel rod with an M10x1.25 rod-end thread and a G1/8 port.
No, this specific SKU lacks the -S suffix, so it has no built-in magnet and cannot accept a CMSG, DMSG, or EMSG sensor switch. You must select an MBL25X40S variant to enable electronic or reed switch position detection.
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