Airtac MBL Aluminum Alloy Mini Cylinder MBL25X250U
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL25X250U is a genuine double-acting aluminum-barrel mini round cylinder with a Ø25mm bore and 250mm 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
- Stroke250 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 MBL25X250U
The AirTAC MBL25X250U is a compact double-acting aluminum mini round cylinder engineered for tight machine spaces. It delivers a push force of 245 N and a pull force of 206 N at 0.5 MPa, making it well-suited for moving small jigs over its 250 mm stroke. The riveted rolling-packed barrel crimps the front and back covers directly to the tube, ensuring a lightweight footprint that is not designed to be disassembled like a tie-rod cylinder. This SKU features a U flat-end back cover for rigid fixed mounting.
Because this specific model lacks the -S suffix, it cannot accept a CMSG, DMSG, or EMSG position sensor. The internal sealing relies on a heterogeneous two-way piston seal that retains grease for long service life, while the carbon steel piston rod features a 20 µm hard-chrome plating to resist wear and corrosion. The end-of-stroke impact is absorbed by a fixed rubber bumper rather than an adjustable air cushion.
Airtac MBL Aluminum Alloy Mini Cylinder MBL25X250U Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL25X250U |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø25 mm |
| Stroke | 250 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 MBL25X250U
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 25 | 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 MBL25X250U Is Used
PCB Router Gate
Cycles a lightweight safety gate on a PCB depaneling router over 250 mm, using its 245 N push force to clear the cutting area between passes.
Test Socket Ejector
Pushes an IC test socket tray out of an automated handler, relying on the rigid U flat-end rear mount to absorb the 206 N retraction pull without shifting.
Carton Flap Folder
Folds minor flaps on a small packaging line, where the compact riveted aluminum body fits neatly between adjacent conveyor belts without requiring ISO 6432 dimensions.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL25X250U the Right Cylinder?
If you need less force, step down to the Ø20 bore which provides 157 N of push at 0.5 MPa; if your payload is heavier, step up to the Ø32 bore which yields 402 N. This base MBL model uses a fixed rubber bumper, so choose the MBLC variant if your application requires an adjustable air cushion for faster or heavier masses. For single-acting spring-return needs in the 20-40 mm bore range, consider the MSBL or MTBL lines.
With a 250 mm stroke, the Ø10 mm piston rod has a high slenderness ratio and low side-load tolerance. An external linear guide should be used to prevent rod-bearing bending, or you can pivot the cylinder using a CA back cover with an SDB bracket. Note that this cylinder does not hold its load when air pressure is lost; the rod will drift or drop. Use an external rod lock or pilot-operated check valve if position holding is required. Replacement match: 25 mm bore, 250 mm stroke, G1/8 port, PT thread, U flat-end back cover, no magnet.
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 MBL25X250U FAQ
At 0.5 MPa, this 25 mm bore cylinder provides 245 N of push force and 206 N of pull force. At 0.7 MPa, the push force increases to 343 N. The maximum theoretical force is 50 kgf at 1.0 MPa.
No, the base MBL25X250U uses a fixed rubber bumper to soften end-of-stroke impacts, not an adjustable cushion screw. If you need adjustable air cushioning for heavier loads, select the MBLC variant.
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