Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X300SU
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X300SU 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 MBLC20X300SU
The AirTAC MBLC20X300SU is a double-acting, single-rod aluminum mini cylinder engineered for compact spaces requiring precise motion control. It generates 157 N of push force and 132 N of pull force at 0.5 MPa, operating via a G1/8 port and an Ø8 mm carbon-steel rod with M8x1.25 end threading. The 300 mm stroke provides ample travel for extended reach operations. The -S code indicates a built-in magnet, enabling position detection via CMSG, DMSG, or EMSG sensor switches, while the U back cover provides a rigid flat-end mounting surface.
Unlike the base MBL series which relies on a fixed rubber bumper, this MBLC variant features a screw-adjustable pneumatic air cushion at both ends. This allows you to tune the end-of-stroke deceleration to match the load and speed, effectively minimizing impact shock, vibration, and noise. The body utilizes a riveted rolling-packed aluminum barrel for a lightweight, space-saving profile, paired with a heterogeneous two-way grease-retaining piston seal for lasting lubrication.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X300SU Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X300SU |
|---|---|
| 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 MBLC20X300SU
| 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 MBLC20X300SU Is Used
3D Printer Bed Leveling
Provides 300 mm of extended travel to actuate the build platform on large-format industrial 3D printers, using the tunable cushion to softly seat the bed without jarring the printed layers.
PCB Shuttle Transfer
Moves electronics panels along a production shuttle with a gentle 157 N push force, relying on the adjustable end-cushioning to prevent sudden stops from dislodging delicate surface-mount components.
Automated Test Handler
Stages semiconductor packages into a test socket over a long distance, utilizing the built-in -S magnet and CMSG reed switch to confirm full extension before the electrical probe descends.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X300SU the Right Cylinder?
For sizing flexibility, stepping down to a smaller bore is not an option as 20 mm is the smallest available frame. If your application requires greater thrust, stepping up to the 25 mm bore yields 245 N of push force at 0.5 MPa. Choose this MBLC cushioned model over the standard MBL when your cycle speeds are high or the moved mass is significant enough that a fixed bumper would cause premature wear. The adjustable cushion only decelerates the piston near the stroke ends; it is not a load lock or brake, so the rod will drift if air pressure is lost or exhausted. Because the 300 mm stroke is relatively long for an Ø8 mm rod, side-load tolerance is low; always use an external guide rail, a pivot mounting accessory, or consider the MBLD double-rod cylinder to prevent rod bending. Replacement match: 20 mm bore, 300 mm stroke, G1/8 port, PT thread, U flat-end back cover, with -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 MBLC Aluminum Alloy Mini Air Cylinder MBLC20X300SU 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 force increases to 220 N. The maximum theoretical force is 32 kgf at 1.0 MPa. It operates within a pressure range of 0.15-1.0 MPa and a speed range of 30-800 mm/s.
The MBLC20X300SU features a screw-tunable pneumatic needle at both ends that traps exhaust air to decelerate the piston smoothly near the stroke limits. You adjust the needle to match your specific load and velocity, which absorbs kinetic energy to protect the end covers from impact—a critical upgrade over the fixed rubber bumper found on the standard MBL series.
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