Airtac MBL Aluminum Alloy Mini Cylinder MBL25X40SU
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL25X40SU is a genuine double-acting aluminum-barrel mini round cylinder with a Ø25mm bore and 40mm 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
- Stroke40 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 MBL25X40SU
The AirTAC MBL25X40SU is a compact double-acting aluminum mini round cylinder engineered for tight machine spaces. It delivers 245 N push and 206 N pull force at 0.5 MPa, making it well-suited for short 40 mm actuation tasks in small part handling. The riveted rolling-packed barrel design keeps the body light and compact, though it is not built to be disassembled like a tie-rod cylinder.
This specific SKU includes a built-in magnet (-S) for CMSG, DMSG or EMSG sensor switches to detect rod position, and features a U flat-end back cover for rigid fixed mounting. The carbon-steel piston rod is plated with 20 µm hard chrome for wear resistance, and the heterogeneous two-way piston seal retains grease for long service life. End-of-stroke impact is absorbed by a fixed rubber bumper, not an adjustable cushion.
Airtac MBL Aluminum Alloy Mini Cylinder MBL25X40SU Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL25X40SU |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø25 mm |
| Stroke | 40 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 MBL25X40SU
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 25 | Bore size in mm. |
| ×40 | 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 MBL25X40SU Is Used
PCB Depaneling Ejector
Provides 245 N of push at 0.5 MPa to cleanly eject cut PCB panels from a router fixture within a compact electronics assembly cell.
Chip Test Handler Gate
Uses its 40 mm stroke and integrated -S magnet to open and close a test handler isolation gate, confirming position via a DMSG sensor.
Small Carton Flap Folder
Folds minor flaps on small packaging boxes with 206 N pull force, fitting neatly into the narrow frame of a carton erector.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL25X40SU the Right Cylinder?
If you need slightly less force, the 20 mm bore neighbour provides 157 N push at 0.5 MPa; for heavier work, stepping up to the 32 mm bore yields 402 N push. Choose the MBLC variant if your cycle speed requires adjustable air cushioning instead of the standard fixed rubber bumper. For single-acting push or pull needs, consider the MSBL or MTBL types.
Because this base MBL uses a fixed rubber bumper rather than a locking mechanism, it cannot hold a load if air pressure is lost or the valve is centred. Always use an external pilot-operated check valve or rod lock for position holding. Replacement matching requires a 25 mm bore, 40 mm stroke, G1/8 port, PT thread form, U flat-end back cover, and the -S 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 MBL25X40SU FAQ
At 0.5 MPa the MBL25X40SU provides 245 N push and 206 N pull. At 0.7 MPa the push force is 343 N, and it reaches a maximum theoretical force of 50 kgf at 1.0 MPa.
No, the base MBL uses a fixed rubber bumper to soften end-of-stroke impact. If you need adjustable air cushioning for heavier loads, select the MBLC variant. The -S suffix on this model indicates a built-in magnet for CMSG, DMSG or EMSG sensor switches.
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