Airtac MBL Aluminum Alloy Mini Cylinder MBL40X350U
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL40X350U is a genuine double-acting aluminum-barrel mini round cylinder with a Ø40mm bore and 350mm 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
- Stroke350 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 MBL40X350U
The AirTAC MBL40X350U is a double-acting aluminum mini round cylinder engineered for compact spaces where a larger profile cylinder cannot fit. It delivers a push force of 628 N and a pull force of 528 N at 0.5 MPa, making this 40 mm bore variant well-suited for driving medium-weight actuators over long 350 mm travel distances. The U suffix denotes a rigid flat-end rear cover that mounts flush against machine frames to resist axial shifting.
Inside this riveted rolling-packed barrel, a heterogeneous two-way piston seal retains grease for continuous lubrication over extended cycle counts, while the Ø16 mm carbon-steel piston rod features 20 μm hard-chrome plating to resist wear and surface corrosion. Because this specific SKU lacks the -S magnet suffix, it cannot accept a CMSG, DMSG, or EMSG position sensor switch. End-of-stroke deceleration is handled by a fixed rubber bumper rather than an adjustable cushion screw.
Airtac MBL Aluminum Alloy Mini Cylinder MBL40X350U Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL40X350U |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 350 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 MBL40X350U
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 40 | Bore size in mm. |
| ×350 | 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 MBL40X350U Is Used
Packaging Conveyor Diverter
Uses the 628 N push force at 0.5 MPa to deflect heavy cardboard cartons on a 350 mm travel lane, fitting easily into tight transfer station footprints.
CNC Lathe Bar Feeder
Pushes raw metal bar stock through a spindle guide tube, leveraging the rigid U flat-end cover to maintain strict axial alignment over the long 350 mm stroke.
Automated Warehouse Pusher
Ejects plastic tote bins from a storage rack, relying on the 880 N push force available at 0.7 MPa to overcome sliding friction during high-speed sorting.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL40X350U the Right Cylinder?
If your application requires less thrust, stepping down to the 32 mm bore yields 402 N of push force at 0.5 MPa; conversely, moving up to the 50 mm bore provides 981 N for heavier payloads. For applications needing softer end-of-stroke deceleration at these travel speeds, the MBLC variant offers an adjustable air cushion instead of the standard fixed rubber bumper. If you need single-action spring return, consider the MSBL or MTBL models.
With a 350 mm stroke driven by a Ø16 mm rod, the unsupported piston rod is highly susceptible to bending under lateral loads. To prevent premature seal failure and rod deformation, use an external linear guide rail, pair the cylinder with a pivot bracket, or switch to the MBLD double-rod anti-rotation type. Note that the fixed rubber bumper only softens end-impact; it does not hold the load. If air pressure is lost or the valve is centered, the rod will drift and drop, requiring an external pilot-operated check valve for position holding.
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 MBL40X350U FAQ
This 40 mm bore cylinder generates 628 N push and 528 N pull at 0.5 MPa, and 880 N push at 0.7 MPa, with a maximum theoretical force of 128 kgf at 1.0 MPa. It operates on filtered air at 0.15-1.0 MPa, runs at speeds of 30-800 mm/s, and uses a G1/4 port with an M12x1.25 rod-end thread.
No. The base MBL uses a fixed rubber bumper that cannot be adjusted for cushioning; you must specify the MBLC variant for adjustable air cushioning. Additionally, because this SKU lacks the -S magnet suffix, it cannot accept CMSG, DMSG, or EMSG sensor switches for rod position detection.
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