Airtac MBL Aluminum Alloy Mini Cylinder MBL20X620SCA
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL20X620SCA is a genuine double-acting aluminum-barrel mini round cylinder with a Ø20mm bore and 620mm 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
- Stroke620 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 MBL20X620SCA
The AirTAC MBL20X620SCA is a compact double-acting aluminum mini round cylinder engineered for tight machine spaces. Operating at 0.5 MPa, it generates 157 N of push force and 132 N of pull force. The 620 mm stroke is a non-standard, made-to-order length exceeding the 500 mm maximum standard range, tailored for extended reach applications.
This SKU includes a built-in magnet (-S) for compatibility with AirTAC CMSG, DMSG, and EMSG sensor switches to track rod position. It features a CA pivot back cover that swings on a pin to accommodate arcing or angular loads. The riveted rolling-packed barrel is crimped to the covers for a lightweight footprint, while the carbon-steel rod with 20 µm hard-chrome plating provides wear and corrosion resistance.
Airtac MBL Aluminum Alloy Mini Cylinder MBL20X620SCA Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL20X620SCA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø20 mm |
| Stroke | 620 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 MBL20X620SCA
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 20 | Bore size in mm. |
| ×620 | 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 MBL20X620SCA Is Used
PCB Conveyor Ejection
Pushes populated PCB assemblies down a long 620 mm conveyor lane, using the 157 N push force and CMSG reed sensor to confirm extended ejection status.
Lathe Tailstock Actuation
Extends a tailstock quill along a long axis bed, where the CA pivot back cover absorbs slight angular misalignments during tool centering.
Carton Pusher Arm
Diverts lightweight packaging cartons across a wide sorting junction, relying on the DMSG electronic sensor to verify the full 620 mm return stroke.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL20X620SCA the Right Cylinder?
To size this bore both ways: stepping down to the 20 mm bore offers 157 N push at 0.5 MPa, while stepping up to the 25 mm bore yields 245 N push at 0.5 MPa. If your cycle requires end-of-stroke deceleration for heavier masses, select the MBLC variant for adjustable air cushioning instead of the base MBL's fixed rubber bumper. For single-acting push or pull needs, consider the MSBL or MTBL models.
Because the 620 mm stroke exceeds 300 mm, the Ø8 mm piston rod is highly susceptible to bending under side loads. The CA pivot back cover helps mitigate angular stress, but you should utilize an external guide rail or switch to an MBLD double-rod cylinder to prevent rod-bearing damage. Note that a plain MBL cannot hold a load if air pressure is lost; use an external rod lock or pilot-operated check valve for safety. Replacement match: 20 mm bore, 620 mm stroke, G1/8 port, PT thread, CA back cover, -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 MBL Aluminum Alloy Mini Cylinder MBL20X620SCA FAQ
At 0.5 MPa, the push force is 157 N and the pull force is 132 N. At 0.7 MPa, the push force reaches 220 N. The maximum theoretical force is 32 kgf at 1.0 MPa.
No, the base MBL uses a fixed rubber bumper to soften end-of-stroke impact, not an adjustable cushion screw. If your application needs adjustable air cushioning for heavier loads, select the MBLC variant.
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