Airtac MBL Aluminum Alloy Mini Cylinder MBL25X25U
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL25X25U is a genuine double-acting aluminum-barrel mini round cylinder with a Ø25mm bore and 25mm 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
- Stroke25 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 MBL25X25U
The AirTAC MBL25X25U is a compact double-acting aluminum mini round cylinder engineered for tight machine spaces. With a 25mm bore and 25mm stroke, it generates 245N of push force and 206N of pull force at 0.5 MPa. This short-stroke format is ideal for small-part ejection or clamping tasks where a larger ISO 15552 profile cylinder would waste valuable real estate. The body utilizes a riveted rolling-packed aluminum barrel, crimping the front and rear covers directly to the tube for a lightweight, space-saving assembly that is not designed to be disassembled like a traditional tie-rod cylinder.
Internal longevity is driven by a heterogeneous two-way piston seal that actively retains grease, paired with a carbon-steel piston rod featuring 20µm hard-chrome plating for wear and corrosion resistance. This specific SKU features a U flat-end back cover for rigid, fixed mounting and a standard PT tapered port thread. Because this model lacks the -S suffix for a built-in magnet, it cannot accommodate a CMSG, DMSG, or EMSG position sensor switch. End-of-stroke energy is absorbed by a fixed rubber bumper rather than an adjustable cushion screw.
Airtac MBL Aluminum Alloy Mini Cylinder MBL25X25U Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL25X25U |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø25 mm |
| Stroke | 25 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 MBL25X25U
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 25 | Bore size in mm. |
| ×25 | 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 MBL25X25U Is Used
PCB Router Push-off
Provides 245N of push force at 0.5 MPa to cleanly snap routed printed circuit boards from their manufacturing panels without damaging delicate traces.
Carton Flap Folder
Uses its 25mm stroke to rapidly tuck minor inner flaps on small packaging cartons prior to sealing, fitting easily into compact case-erector frames.
Small Part Ejector
Kicks lightweight molded plastic parts out of a tight progressive die area, relying on the rigid U flat-end cover to maintain precise alignment.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL25X25U the Right Cylinder?
If you need slightly less force, step down to the 20mm bore which supplies 157N of push force at 0.5 MPa. If your application requires moving heavier loads, step up to the 32mm bore which provides 402N of push force. Keep in mind that a plain double-acting cylinder does not hold its position or load when air pressure is lost or the valve is centered; the rod will drift or drop. If you need fail-safe load holding without live pressure, you must add an external rod lock or a pilot-operated check valve.
For exact replacement matching, specify a 25mm bore, 25mm stroke, G1/8 port size, PT port thread, U flat-end back cover, and no built-in magnet. Because the stroke is only 25mm, side-load stress on the 10mm rod is minimal, but for any arcing or angular loads, consider switching to a CA pivot back cover or using an SDB pivot bracket to prevent rod-bearing bending.
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 MBL25X25U FAQ
At 0.5 MPa, the MBL25X25U delivers 245N of push force and 206N of pull force. At 0.7 MPa, the push force increases to 343N. The theoretical maximum force is 50 kgf at 1.0 MPa. The operating speed ranges from 30-800 mm/s.
No, the base MBL features a fixed rubber bumper to soften end-of-stroke impact and does not have an adjustable air cushion (you would need the MBLC variant for that). Additionally, because this specific SKU lacks the -S suffix, it has no built-in magnet and cannot be fitted with a CMSG, DMSG, or EMSG sensor switch.
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