Airtac MBL Aluminum Alloy Mini Cylinder MBL25X300SU
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL25X300SU is a genuine double-acting aluminum-barrel mini round cylinder with a Ø25mm bore and 300mm 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
- Stroke300 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 MBL25X300SU
The AirTAC MBL25X300SU is a compact double-acting aluminum mini round cylinder engineered for tight machine spaces where a larger profile body will not fit. It uses a 25mm bore and 300mm stroke to generate 245N of push force and 206N of pull force at 0.5 MPa. The riveted rolling-packed barrel crimps the front and rear covers directly to the tube, yielding a light footprint that is not designed to be disassembled like a traditional tie-rod cylinder. This specific SKU includes a U flat-end back cover for rigid fixed mounting and a built-in magnet (-S) for position sensing.
Because the rod extends 300mm, the 10mm carbon-steel rod with 20µm hard-chrome plating requires careful alignment to prevent bending. The heterogeneous two-way piston seal retains grease internally for long service life. End-of-stroke impact is absorbed by a fixed rubber bumper rather than an adjustable cushion. The integrated magnet allows you to mount CMSG reed or DMSG/EMSG electronic switches directly onto the body to confirm stroke endpoints in automated sequences.
Airtac MBL Aluminum Alloy Mini Cylinder MBL25X300SU Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL25X300SU |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø25 mm |
| Stroke | 300 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 MBL25X300SU
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 25 | Bore size in mm. |
| ×300 | 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 MBL25X300SU Is Used
PCB Router Z-Axis Gate
Uses the 245N push force at 0.5 MPa to open and close a safety guard over a spinning PCB routing spindle, fitting within the 25mm bore constraints of a dense electronics assembly cell.
Carton Flap Folder
Employs the 300mm stroke to reach across a secondary packaging line, folding corrugated cardboard flaps prior to tape sealing where a longer extension is required but space is tight.
Lab Tube Indexer
Moves a rack of 15ml centrifuge tubes into a barcode scanner's focal point, relying on the -S magnet and a DMSG solid-state switch to verify the exact insertion depth.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL25X300SU the Right Cylinder?
If you need slightly less force, step down to the 20mm bore which yields 157N push at 0.5 MPa. For heavier payloads, step up to the 32mm bore which provides 402N push at 0.5 MPa. Choose the MBLC variant if your cycle speed demands an adjustable air cushion instead of this model's fixed rubber bumper. You can also select the MSBL or MTBL single-acting push/pull types if you only need air pressure to drive the rod in one direction.
With a 300mm stroke on a 10mm rod, side-load tolerance is low. You should use an external guide or a pivot bracket to prevent rod-bearing bending under lateral stress. This plain double-acting cylinder does not hold its load when air pressure is lost or the valve is centered; the rod will drift. For drop prevention, add an external rod lock or a pilot-operated check valve. Replacement match: 25mm bore, 300mm stroke, G1/8 port, PT thread, U flat-end back cover, no mounting accessory specified, built-in magnet (-S).
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 MBL25X300SU FAQ
At 0.5 MPa it provides 245N push and 206N pull. At 0.7 MPa the push force is 343N. The theoretical maximum force is 50 kgf at 1.0 MPa. The operational speed range is 30-800 mm/s.
No, the base MBL uses a fixed rubber bumper to soften end-of-stroke impact. It is not an adjustable air cushion or a cushion screw. If your application requires adjustable end cushioning for heavier loads, select the MBLC variant.
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