Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40U
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40U is a genuine double-acting aluminum-barrel mini round cylinder with a Ø20mm bore and 40mm 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
- Stroke40 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 MBLC20X40U
The AirTAC MBLC20X40U is a double-acting, 20mm bore mini cylinder with a 40mm stroke, engineered for compact actuation in tight assemblies. It delivers 157 N of push and 132 N of pull at 0.5 MPa, making it suitable for moving small actuators or light mechanisms. The U suffix denotes a rigid flat-end back cover for direct mounting.
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 your load and speed, effectively reducing impact shock and vibration. The body utilizes a riveted rolling-packed aluminum barrel for a lightweight footprint, while the Ø8 mm carbon-steel rod is protected by 20 µm hard-chrome plating to resist premature wear.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40U Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40U |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø20 mm |
| Stroke | 40 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 MBLC20X40U
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 20 | Bore size in mm. |
| ×40 | 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 MBLC20X40U Is Used
PCB Pick-and-Place
Drives a 40mm vertical pick head for electronic component placement, utilizing the 132 N pull force and tuned cushions to prevent micro-vibrations during high-frequency indexing.
Connector Molding Press
Actuates a small mold halving pin in an injection machine, where the 157 N push force seats the mold and the adjustable cushion prevents flashing on fast closures.
Pharma Carton Flap
Folds carton side flaps at 30-800 mm/s on a packaging line, using the compact 20mm body to fit between narrow conveyor guides without collision.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40U the Right Cylinder?
At 157 N push (0.5 MPa), stepping down is not an option as 20mm is the smallest available bore. If your application requires more force, the next size up is the 25mm bore, which provides 245 N push and 206 N pull at 0.5 MPa. Choose this MBLC version over the standard MBL when your cycle speeds are high enough that a fixed rubber bumper would cause excessive end-cover impact. Note that this specific SKU lacks the -S magnet, meaning it cannot support CMSG, DMSG, or EMSG position sensors. For exact replacement, match the 20mm bore, 40mm stroke, G1/8 port, M8x1.25 rod thread, PT port thread, and U flat-end cover.
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 MBLC20X40U FAQ
This 20mm bore cylinder delivers 157 N push and 132 N pull at 0.5 MPa, 220 N push and 185 N pull at 0.7 MPa, with a maximum theoretical force of 32 kgf at 1.0 MPa.
A screw-tunable needle at both stroke ends restricts exhausting air to decelerate the piston smoothly near the end caps. It minimizes impact noise on fast moves but is strictly a deceleration device, not a load lock or brake.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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