Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X300U
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X300U is a genuine double-acting aluminum-barrel mini round cylinder with a Ø40mm bore and 300mm 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
- Stroke300 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionRubber bumper (MBLC variant: adjustable air cushion)
About the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X300U
The AirTAC MBLC40X300U is a double-acting aluminum mini cylinder engineered with a 40 mm bore and 300 mm stroke. It delivers 628 N of push force and 528 N of pull force at 0.5 MPa, making it well-suited for mid-range linear actuation. A defining feature of this SKU is the U flat-end back cover, providing a rigid, fixed rear mounting interface rather than a swinging pivot.
Unlike the base MBL series which relies on a fixed rubber bumper, this MBLC variant incorporates a screw-adjustable pneumatic air cushion at both ends. This allows you to tune the end-of-stroke deceleration to match moving loads, effectively minimizing impact shock, vibration, and noise. The riveted rolling-packed aluminum barrel keeps the body compact for tight spaces, while the Ø16 mm carbon-steel rod features 20 µm hard-chrome plating for wear resistance. Note that this specific configuration lacks a built-in magnet, so it cannot support CMSG, DMSG, or EMSG position sensors.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X300U Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X300U |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 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 MBLC Aluminum Alloy Mini Air Cylinder MBLC40X300U
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 40 | Bore size in mm. |
| ×300 | 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 MBLC Aluminum Alloy Mini Air Cylinder MBLC40X300U Is Used
Carton Flap Folding
Drives folding mechanisms on packaging lines at 628 N push force, where the adjustable air cushion ensures the 300 mm stroke decelerates smoothly without slamming the carton assembly.
Injection Mold Ejection
Ejects plastic parts from small injection molds, using the tunable end-cushion to protect sensitive mold faces and reduce repetitive impact noise during high-frequency cycling.
Pallet Push-Off
Pushes light goods off a transfer pallet in logistics sortation, relying on the rigid U flat-end back cover to maintain alignment under 528 N of pull force during retraction.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X300U the Right Cylinder?
When sizing this actuator, consider stepping down to the 32 mm bore if your load requires less force—it yields 402 N push at 0.5 MPa—or stepping up to the 50 mm bore for 981 N of push force. Choose this MBLC cushioned version over the standard MBL when your application runs at higher speeds or cycles frequently, as the tunable needle deceleration protects the end covers from repeated heavy impacts. Remember that the air cushion only decelerates the piston near the stroke ends; it is not a brake or load lock, so the rod will drift if air is lost or the valve centers.
At a 300 mm stroke, the Ø16 mm rod is highly susceptible to side-load bending and buckling. To manage this, use an external linear guide rail to support the load, select a CA or SDB pivot mounting to absorb angular misalignment, or switch to an MBLD double-rod cylinder for greater lateral stability. This U-cover model uses a G1/4 port and M12x1.25 rod-end thread with PT (tapered) port threading.
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 MBLC Aluminum Alloy Mini Air Cylinder MBLC40X300U FAQ
This 40 mm bore cylinder uses a G1/4 port and a Ø16 mm rod with an M12x1.25 thread. It generates 628 N push and 528 N pull at 0.5 MPa, 880 N push at 0.7 MPa, and reaches a maximum theoretical output of 128 kgf at 1.0 MPa.
No, this specific SKU (MBLC40X300U) does not have a built-in magnet. You must select an MBLC model with the -S suffix (e.g., MBLC40X300S) to use AirTAC CMSG reed or DMSG/EMSG electronic solid-state sensor switches for rod position detection.
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