Airtac MBL Aluminum Alloy Mini Cylinder MBL40X25SCA
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL40X25SCA is a genuine double-acting aluminum-barrel mini round cylinder with a Ø40mm bore and 25mm stroke, G1/4 air ports and a fixed rubber bumper. Its compact riveted body suits push, hold and clamp motion in tight machine spaces.
- BoreØ40 mm
- Stroke25 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionRubber bumper (MBLC variant: adjustable air cushion)
About the Airtac MBL Aluminum Alloy Mini Cylinder MBL40X25SCA
The AirTAC MBL40X25SCA is a compact double-acting aluminum mini round cylinder engineered for tight machine spaces. It delivers a robust 628 N push force at 0.5 MPa, utilizing a short 25 mm stroke for rapid, high-impact actuation. The riveted rolling-packed barrel crimps the front and back covers directly to the tube, creating an exceptionally light, sealed body that is not designed to be disassembled like a traditional tie-rod cylinder.
This specific SKU includes a CA pivot back cover, allowing the cylinder to swing freely on a pin to accommodate arcing or angular loads. It is factory-fitted with a built-in magnet (-S) for rod position detection via AirTAC CMSG, DMSG, or EMSG sensor switches. The carbon-steel piston rod features a 20 um hard-chrome plating for superior wear and corrosion resistance, paired with a heterogeneous two-way piston seal that retains grease for a long service life.
Airtac MBL Aluminum Alloy Mini Cylinder MBL40X25SCA Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL40X25SCA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 MBL40X25SCA
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 40 | Bore size in mm. |
| ×25 | 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 MBL40X25SCA Is Used
Pivoting Parts Ejector
Ideal for swinging an automated arm to eject machined aluminum components from a CNC fixture, utilizing the 628 N push force and CA pivot back cover to handle the angular motion.
Packaging Flap Folder
Drives a short 25 mm stroke to fold corrugated cardboard flaps on a high-speed packaging line, where the compact riveted aluminum body fits neatly within the conveyor frame.
Sorter Diverter Gate
Actuates a short-stroke diverter arm on a warehouse logistics conveyor, relying on the -S magnet and DMSG electronic sensor to confirm gate position for the PLC.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL40X25SCA the Right Cylinder?
Selecting the MBL40X25SCA makes sense when your application requires a 628 N push force at 0.5 MPa within a compact footprint. If you need less force, stepping down to the 32 mm bore yields 402 N of push force. Conversely, if your load requires more power, stepping up to the 50 mm bore provides 981 N. The CA clevis mount on this unit is ideal for pivoting mechanisms, but if your machine needs rigid fixed mounting, the U flat-end back cover is the alternative.
Because the base MBL uses a fixed rubber bumper rather than an adjustable air cushion, end-of-stroke impact noise is inherent. For faster cycling or heavier moving masses, upgrade to the MBLC variant for adjustable air cushioning. Note that this cylinder cannot hold its position if air pressure is lost; the rubber bumper only softens the end stroke and does not act as a brake. An external rod lock or pilot-operated check valve is required for position holding. Replacement match: 40 mm bore, 25 mm stroke, G1/4 port, PT thread, CA back cover, 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 MBL40X25SCA FAQ
At 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 880 N, with a maximum theoretical force of 128 kgf at 1.0 MPa. The operating speed ranges from 30-800 mm/s.
No, the base MBL40X25SCA uses a fixed rubber bumper to absorb end-of-stroke impacts and does not feature an adjustable cushion screw. If your application requires adjustable air cushioning for heavier loads or faster speeds, you must use the MBLC variant.
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