Airtac MBL Aluminum Alloy Mini Cylinder MBL20X50SCA
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL20X50SCA 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 MBL Aluminum Alloy Mini Cylinder MBL20X50SCA
The AirTAC MBL20X50SCA is a double-acting mini round cylinder engineered for tight machine spaces where a larger profile body cannot fit. At its core is a riveted rolling-packed aluminum barrel, yielding a highly compact footprint while keeping weight to an absolute minimum. Operating at 0.5 MPa, this 20mm bore configuration generates 157 N of push force and 132 N of pull force over a 50mm stroke, making it well-suited for light-duty positioning tasks.
This specific SKU features a built-in magnet (-S) for compatibility with AirTAC CMSG reed and DMSG or EMSG solid-state sensor switches, enabling precise end-of-stroke detection. Unlike a rigid rear mount, the CA pivot back cover is designed to swing on a pin, accommodating arcing or angular loads during actuation. Internally, a heterogeneous two-way piston seal retains grease for long service life, while the carbon-steel piston rod features 20 μm hard-chrome plating to resist wear and corrosion.
Airtac MBL Aluminum Alloy Mini Cylinder MBL20X50SCA Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL20X50SCA |
|---|---|
| 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 MBL Aluminum Alloy Mini Cylinder MBL20X50SCA
| 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 MBL Aluminum Alloy Mini Cylinder MBL20X50SCA Is Used
PCB Drill Clamping
Provides 157 N of clamping pressure to secure small printed circuit boards within an automated drilling fixture, utilizing the CA pivot to absorb slight angular offsets.
Chip Sorter Gate
Actuates a tiny diverter gate on a semiconductor chip sorting line, where the compact 20mm bore and integrated magnet confirm gate closure via a DMSG sensor.
Vial Indexer Stop
Halts small glass vials on a rotary indexing table in medical bottling lines, using the 50mm stroke and rubber bumper to prevent fragile part breakage.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL20X50SCA the Right Cylinder?
If your application requires slightly less force, stepping down is not an option as 20mm is the smallest MBL bore available. Conversely, if you need substantially more power, stepping up to the 25mm bore provides 245 N of push force at 0.5 MPa. The base MBL relies on a fixed rubber bumper to soften end-of-stroke impacts; if your cycle rates demand adjustable air cushioning for heavier moving masses, specify the MBLC variant instead. For single-acting spring-return needs, consider the MSBL or MTBL series.
Because this is a double-acting cylinder, it does not hold its load if air pressure is lost or the valve is centered—the rod will drift. An external rod lock or pilot-operated check valve is required for fail-safe position holding. Replacement units must match the 20mm bore, 50mm stroke, G1/8 port size, PT thread form, CA pivot back cover, and the -S magnet specification.
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 MBL Aluminum Alloy Mini Cylinder MBL20X50SCA FAQ
At 0.5 MPa, this 20mm bore cylinder provides 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.
No, the base MBL features a fixed rubber bumper that cannot be adjusted. If your application requires adjustable end-of-stroke cushioning to handle faster or heavier loads, you must upgrade to the MBLC variant.
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