Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X50SU
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X50SU is a genuine double-acting aluminum-barrel mini round cylinder with a Ø20mm bore and 50mm 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
- Stroke50 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 MBLC20X50SU
The AirTAC MBLC20X50SU is a double-acting aluminum mini cylinder with a 20 mm bore and 50 mm stroke. It generates 157 N of push force and 132 N of pull force at 0.5 MPa, making it well suited for compact, low-mass positioning tasks. Unlike the base MBL series, this variant uses a screw-adjustable pneumatic cushion at both ends to smoothly decelerate the piston near stroke limits, reducing impact and vibration on faster cycles.
This SKU includes a built-in magnet (-S) for compatibility with AirTAC CMSG reed and DMSG or EMSG electronic sensor switches to detect rod position. It features a U flat-end back cover for rigid mounting, a G1/8 port, and an Ø8 mm carbon-steel rod with 20 µm hard-chrome plating. The riveted rolling-packed aluminum barrel keeps the overall envelope small and light for tight machinery layouts.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X50SU Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X50SU |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø20 mm |
| Stroke | 50 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 MBLC20X50SU
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 20 | Bore size in mm. |
| ×50 | 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 MBLC20X50SU Is Used
PCB Pick-and-Place Nozzle
Actuates a small vacuum nozzle on a PCB assembly handler, using the 50 mm stroke and tunable cushion to prevent jarring impacts that could dislodge delicate surface-mount components.
Electronics Test Socket
Drives a pneumatic test probe head into semiconductor contacts, relying on the 157 N push force and the position feedback from the -S magnet for precise, repeatable engagement.
Pharmaceutical Carton Flap
Folds a small cardboard flap on a high-speed pharmaceutical packaging line, where the compact 20 mm envelope fits between guide rails and the cushion softens the 50 mm stroke end.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X50SU the Right Cylinder?
Choose this 20 mm bore when your application requires around 157 N of push force at 0.5 MPa. If you need less force, the series does not offer a smaller standard bore, so you would look outside this family for a micro cylinder. If your load is heavier, stepping up to the 25 mm bore increases your push force to 245 N at 0.5 MPa. Select the MBLC over the fixed-bumper MBL when your cycle speeds are high enough that the standard rubber bumper cannot adequately absorb the kinetic energy.
This specific configuration uses a PT tapered port thread, a U flat-end back cover, and an -S magnet. Note that the adjustable air cushion only decelerates the piston near the ends of travel; it is not a brake and will not hold a load if air pressure is lost or the valve centers.
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 MBLC20X50SU FAQ
At 0.5 MPa, this 20 mm bore cylinder provides 157 N of push force and 132 N of pull force. At 0.7 MPa, the push increases to 220 N. The theoretical maximum force is 32 kgf at 1.0 MPa. It operates at speeds ranging from 30 to 800 mm/s.
A screw-tunable needle at both ends of the cylinder traps a small volume of air to decelerate the piston as it approaches the stroke limits. You adjust the needle to match your load and speed, which reduces end-cover impact, noise, and vibration. It is strictly an end-of-stroke damping feature, not a load-holding brake.
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