Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X300U
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X300U is a genuine double-acting aluminum-barrel mini round cylinder with a Ø20mm bore and 300mm stroke, G1/8 air ports and a fixed rubber bumper. Its compact riveted body suits push, hold and clamp motion in tight machine spaces.
- BoreØ20 mm
- Stroke300 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionRubber bumper (MBLC variant: adjustable air cushion)
About the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X300U
The AirTAC MBLC20X300U is a compact double-acting mini cylinder engineered with a screw-tunable pneumatic air cushion at both stroke ends. Generating 157 N of push force at 0.5 MPa, this 20 mm bore unit is built for rapid, repetitive motion where fixed rubber bumpers would fail. The 300 mm stroke provides extended travel for packaging or sorting tasks. Its body utilizes a riveted rolling-packed aluminum barrel, keeping the assembly lightweight and highly resistant to lateral stress without needing bulky tie-rod construction.
This specific SKU features a rigid U flat-end back cover and a standard PT tapered port thread. Because it lacks the -S suffix, this configuration cannot accept a CMSG, DMSG, or EMSG position sensor. The piston relies on a heterogeneous two-way grease-retaining seal, while the Ø8 mm carbon-steel rod is protected by a 20 µm hard-chrome plating to resist premature wear during high-cycle operations.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X300U Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X300U |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø20 mm |
| Stroke | 300 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M8×1.25 |
| 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 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 MBLC20X300U
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 20 | 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 MBLC20X300U Is Used
PCB Shuttle Conveyor
Drives extended 300 mm strokes to transfer PCBs between testing stations, utilizing the tunable air cushion to prevent sudden impacts that could dislodge delicate surface-mount components.
Carton Flap Folder
Executes long reach folding on small packaging lines, using the 157 N push force to reliably close light cardboard flaps before the tape head applies the seal.
Bin Diverter Arm
Swings a lightweight deflector gate across a sorting conveyor, with the adjustable cushion ensuring the arm does not slam violently into the end stop during high-speed routing.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X300U the Right Cylinder?
For applications needing less reach or lower force, the 20 mm bore is the smallest available in this series, so stepping down requires switching to a different compact family. If your process requires greater thrust, the 25 mm bore offers 245 N push at 0.5 MPa, providing a clear upgrade path. Choose this MBLC variant over the base MBL when your cycle speeds exceed what a fixed rubber bumper can absorb, as the adjustable needle allows precise end-of-stroke deceleration to protect the end covers.
At a 300 mm stroke on an Ø8 mm rod, side-load tolerance is minimal. Long, thin rods are highly susceptible to bending and premature seal failure under off-center loads. To manage this, implement an external linear guide, select a CA or SDB pivot mounting to allow articulation, or switch to an MBLD double-rod cylinder. Note that the air cushion only decelerates the piston near the ends; it is not a brake, and the rod will drift if air pressure is lost.
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 MBLC20X300U FAQ
At 0.5 MPa, this 20 mm bore cylinder delivers 157 N of push force and 132 N of pull force. At 0.7 MPa, the push increases to 220 N. The maximum theoretical force is 32 kgf at 1.0 MPa. It features a G1/8 port, an Ø8 mm rod with an M8x1.25 thread, and operates at speeds between 30-800 mm/s.
This specific MBLC20X300U SKU does not have a built-in magnet, so it cannot accept CMSG, DMSG, or EMSG sensor switches. The adjustable air cushion at both ends functions by trapping a small amount of exhaust air; you tune the needle valve to decelerate the piston smoothly near the stroke ends, reducing impact noise and protecting the covers on fast cycles.
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