Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X20U
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X20U is a genuine double-acting aluminum-barrel mini round cylinder with a Ø20mm bore and 20mm 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
- Stroke20 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 MBLC20X20U
The AirTAC MBLC20X20U is a compact double-acting aluminum mini cylinder engineered for short 20 mm strokes. It delivers 157 N of push force and 132 N of pull force at 0.5 MPa. The defining feature of this MBLC variant is the screw-adjustable pneumatic cushion at both ends. Instead of a fixed rubber bumper absorbing shock, you tune the needle valve to decelerate the piston smoothly, minimizing end-cover impact and vibration on faster moves.
This specific configuration uses a U flat-end back cover for rigid rear mounting and a standard PT tapered port. Because this SKU lacks the -S suffix, it has no built-in magnet and cannot support CMSG, DMSG, or EMSG position sensors. The riveted rolling-packed aluminum barrel keeps the assembly light, while the Ø8 mm carbon-steel rod features 20 µm hard-chrome plating to resist wear. The heterogeneous two-way grease-retaining piston seal ensures consistent friction throughout the 30-800 mm/s speed range.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X20U Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X20U |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø20 mm |
| Stroke | 20 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 MBLC20X20U
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 20 | Bore size in mm. |
| ×20 | 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 MBLC20X20U Is Used
PCB Depaneling Ejector
Uses the short 20 mm stroke and 157 N force to eject cut circuit boards from a routing fixture, relying on the tuned cushion to prevent bouncing.
Connector Insertion Press
Pushes delicate ribbon connectors into FFC sockets during electronics assembly, where the adjustable end-of-stroke deceleration protects fragile components.
Pharmacy Bin Diverter
Actuates a small flap inside a compact pill-dispensing machine, using the rigid U flat-end mount to hold steady against shifting carton flow.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X20U the Right Cylinder?
With a 20 mm bore, this cylinder provides 157 N push at 0.5 MPa. If your application requires less force, there is no smaller bore in this series, so you would look outside the MBL family. If you need more power, stepping up to the 25 mm bore increases your push force to 245 N at 0.5 MPa. Choose this MBLC version over the base MBL when your cycle speeds are high enough that the standard fixed bumper cannot adequately absorb the kinetic energy.
This model features a PT port thread and a U flat-end back cover. Remember that the adjustable air cushion only decelerates the piston near the stroke ends; it is not a brake. A plain double-acting cylinder does not hold position if air pressure is lost or the valve centers, so you will need an external rod lock for fail-safe holding. Because there is no -S magnet, you cannot mount reed or electronic sensors on this body.
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 MBLC20X20U 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, push increases to 220 N. The maximum theoretical force is 32 kgf at 1.0 MPa. It uses an Ø8 mm carbon-steel rod with an M8x1.25 rod-end thread and a G1/8 port.
The MBLC20X20U features a screw-tunable needle valve at both ends. You adjust it to trap and bleed exhaust air at the end of the stroke, decelerating the piston smoothly. This reduces impact noise and wear compared to a fixed rubber bumper, but it does not lock the rod in place.
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