Airtac MBL Aluminum Alloy Mini Cylinder MBL25X20SU
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL25X20SU is a genuine double-acting aluminum-barrel mini round cylinder with a Ø25mm bore and 20mm 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
- Stroke20 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 MBL25X20SU
The AirTAC MBL25X20SU 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 short 20 mm actuation tasks. The riveted rolling-packed barrel keeps the body light and small, though it is not designed to be disassembled like a 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 this is the base MBL variant, end-of-stroke deceleration is handled by a fixed rubber bumper, not an adjustable air cushion. The carbon-steel piston rod features a 20 um hard-chrome plating for wear and corrosion resistance, paired with a heterogeneous two-way piston seal that retains grease for a long service life. The integrated magnet allows you to mount CMSG reed or DMSG and EMSG solid-state sensor switches directly onto the body to confirm the 20 mm stroke endpoints.
Airtac MBL Aluminum Alloy Mini Cylinder MBL25X20SU Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL25X20SU |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø25 mm |
| Stroke | 20 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 MBL25X20SU
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 25 | Bore size in mm. |
| ×20 | 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 MBL25X20SU Is Used
PCB Pusher
Ejecting printed circuit boards from an SMT pick-and-place conveyor using the 245 N push force within a compact 20 mm travel limit.
Carton Flap Deflector
Folding small carton flaps in tight packaging machine clearances where the rigid U flat-end mount provides stable fixed-body alignment.
Vial Sorting Gate
Actuating a sorting gate for pharmaceutical vials, using the built-in magnet and a DMSG solid-state switch to verify the 20 mm stroke endpoint.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL25X20SU the Right Cylinder?
If you need slightly less force, the neighbouring 20 mm bore provides 157 N of push at 0.5 MPa, while stepping up to the 32 mm bore yields 402 N for heavier resistance. Keep in mind that a plain MBL does not hold its position or load when air pressure is lost or the valve is centred; the rod drifts or drops. The rubber bumper only softens end-of-stroke impact and is not a lock or brake. If your application requires position holding without live pressure, you must use an external rod lock or a pilot-operated check valve.
This 25 mm bore cylinder features a G1/8 port, a Ø10 mm rod with an M10x1.25 rod-end thread, and a default PT tapered port thread. The U flat-end back cover provides a rigid rear mount, and the -S magnet enables CMSG/DMSG/EMSG sensor integration. If your short-stroke application generates heavy end-impact loads, consider the MBLC variant, which replaces the fixed bumper with an adjustable air cushion.
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 MBL25X20SU FAQ
At 0.5 MPa, this 25 mm bore cylinder provides a push force of 245 N and a pull force of 206 N. 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 MBL25X20SU uses a fixed rubber bumper to soften the end-of-stroke impact and does not have an adjustable cushion screw. If your application requires adjustable end-cushioning for heavier loads, you should select the MBLC variant instead.
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