Airtac MBL Aluminum Alloy Mini Cylinder MBL25X15SU
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL25X15SU is a genuine double-acting aluminum-barrel mini round cylinder with a Ø25mm bore and 15mm 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
- Stroke15 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 MBL25X15SU
The AirTAC MBL25X15SU is a compact double-acting aluminum mini round cylinder engineered for extremely tight machine spaces. Operating at 0.5 MPa, it yields 245 N of push force and 206 N of pull force across its 15 mm stroke, making it ideal for short, high-frequency part ejection. The riveted rolling-packed barrel permanently crimps the covers to the tube, yielding a lightweight body that is not designed to be disassembled like a tie-rod cylinder.
This specific SKU includes a U flat-end back cover for rigid, fixed-foot rear mounting and a built-in magnet (-S) for non-contact position detection. The magnet pairs directly with AirTAC CMSG reed switches or DMSG and EMSG solid-state electronic sensors. Additionally, the carbon-steel piston rod features a 20 um hard-chrome plating, and the heterogeneous two-way piston seal actively retains grease for long service life.
Airtac MBL Aluminum Alloy Mini Cylinder MBL25X15SU Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL25X15SU |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø25 mm |
| Stroke | 15 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 MBL25X15SU
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 25 | Bore size in mm. |
| ×15 | 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 MBL25X15SU Is Used
PCB Router Ejection
Provides 245 N of push at 0.5 MPa to eject small printed circuit boards from a routing machine fixture, utilizing the 15 mm stroke to clear the work area rapidly.
Chip Test Handler Pusher
Uses the built-in magnet with a DMSG solid-state sensor to verify the extended position of a 15 mm stroke when pushing semiconductor chips into a testing socket.
Pharmaceutical Tray Stop
Acts as a compact, rigid stop for lightweight pharmaceutical trays on a conveyor, relying on the 206 N pull force at 0.5 MPa to retract and let product pass.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL25X15SU the Right Cylinder?
If your application requires less force, step down to the 20 mm bore, which provides 157 N push at 0.5 MPa. For heavier moves, step up to the 32 mm bore, delivering 402 N push at 0.5 MPa. Because this is a short 15 mm stroke, side-load bending is minimal, but the 10 mm rod still has low side-load tolerance compared to larger profile cylinders.
The base MBL uses a fixed rubber bumper to soften end-of-stroke impact; for adjustable air cushioning to handle faster or heavier loads, select the MBLC variant. Note that a plain MBL does not hold its load when air pressure is lost or the valve is centered—the rod will drift. Use an external rod lock or pilot-operated check valve if position holding is required. Replacement match: 25 mm bore, 15 mm stroke, G1/8 port, PT thread, U flat-end back cover, no mounting accessory, with 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 MBL25X15SU FAQ
The MBL25X15SU double-acting cylinder has a push force of 245 N and a pull force of 206 N at 0.5 MPa. At 0.7 MPa, the push force is 343 N. The maximum theoretical force is 50 kgf at 1.0 MPa.
No, the base MBL25X15SU 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 loads, you should select the MBLC variant instead.
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