Airtac MBL Aluminum Alloy Mini Cylinder MBL40X225SU
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL40X225SU is a genuine double-acting aluminum-barrel mini round cylinder with a Ø40mm bore and 225mm 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
- Stroke225 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 MBL40X225SU
The AirTAC MBL40X225SU is a compact double-acting aluminum mini round cylinder engineered for tight machine spaces. It delivers 628 N of push force and 528 N of pull force at 0.5 MPa, making it suited for mid-range actuation tasks. The riveted rolling-packed barrel design keeps the overall weight down but means the body is permanently crimped and not designed to be disassembled like a tie-rod unit.
This 225 mm stroke variant includes a built-in magnet (-S) for use with AirTAC CMSG, DMSG, and EMSG sensor switches to track rod position. The U flat-end back cover provides a rigid fixed rear mounting surface. It features a carbon-steel piston rod with a 20 µm hard-chrome plating for high 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 MBL40X225SU Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL40X225SU |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 225 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 MBL40X225SU
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 40 | Bore size in mm. |
| ×225 | 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 MBL40X225SU Is Used
PCB Drill Bit Changer
Provides the 628 N push force needed to actuate a tool-changing carousel on a CNC drilling machine, using the -S magnet to confirm tool release.
Carton Flap Folder
Drives a 225 mm stroke arm to fold corrugated cardboard flaps on a packaging conveyor, where the compact riveted body fits inside narrow side frames.
Test Socket Actuator
Lowers an IC test socket onto a semiconductor wafer board, relying on the U flat-end cover for rigid alignment and the grease-retaining seal for millions of cycles.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL40X225SU the Right Cylinder?
If you need less force, step down to the 32 mm bore (402 N push @0.5 MPa), or step up to the 50 mm bore (981 N push @0.5 MPa) for heavier loads. For applications requiring end-of-stroke speed regulation, select the MBLC variant with adjustable air cushioning instead of this base model's fixed rubber bumper. If you need single-acting spring-return motion, consider the MSBL or MTBL series. This MBL40X225SU uses a G1/4 port, PT thread form, U flat-end back cover, and a -S magnet.
At 225 mm of stroke, the 16 mm rod is highly susceptible to bending under side loads. To prevent premature seal wear and rod-bearing failure, use an external guide rail, or pivot the cylinder using an SDB bracket with a CA back cover. Note that the fixed rubber bumper softens end-of-stroke impact but does not lock the rod; if the load must be held without live air pressure, install an external rod lock or pilot-operated check valve.
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 MBL40X225SU FAQ
At 0.5 MPa, the MBL40X225SU generates 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force reaches 880 N, with a maximum theoretical force of 128 kgf at 1.0 MPa. It operates on filtered air at 0.15-1.0 MPa with a speed range of 30-800 mm/s.
No, the base MBL40X225SU uses a fixed rubber bumper to soften end-of-stroke impacts, not an adjustable cushion screw. If your application requires adjustable air cushioning for heavier or faster moving loads, you should upgrade to the MBLC variant.
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