Airtac MBL Aluminum Alloy Mini Cylinder MBL20X660SU
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL20X660SU is a genuine double-acting aluminum-barrel mini round cylinder with a Ø20mm bore and 660mm 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
- Stroke660 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 MBL20X660SU
The AirTAC MBL20X660SU is a double-acting aluminum mini round cylinder engineered for compact spaces, featuring a 20mm bore and a 660mm non-standard made-to-order stroke. It delivers 157 N of push force and 132 N of pull force at 0.5 MPa. The riveted rolling-packed barrel crimps the covers directly to the tube, yielding a lightweight body that is not designed to be disassembled like a tie-rod cylinder. The U flat-end back cover provides a rigid fixed rear mounting surface for straightforward in-line installations.
This SKU includes the -S built-in magnet, enabling precise end-of-stroke detection when paired with AirTAC CMSG reed or DMSG/EMSG solid-state sensor switches. A heterogeneous two-way piston seal retains grease internally to maximize cycle life, while the Ø8 mm carbon-steel rod features 20 µm hard-chrome plating for wear and corrosion resistance. Because this is a 660 mm stroke, the fixed rubber bumper at the base only softens end-of-stroke impact and does not act as an adjustable air cushion (see the MBLC variant for that feature).
Airtac MBL Aluminum Alloy Mini Cylinder MBL20X660SU Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL20X660SU |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø20 mm |
| Stroke | 660 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 MBL20X660SU
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 20 | Bore size in mm. |
| ×660 | 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 MBL20X660SU Is Used
PCB Conveyor Diverter
Pushes lightweight PCB carriers across a 660 mm transfer gap in electronics assembly lines, using the 157 N push force to slide products without damaging fragile components.
Pallet Tag Dispenser
Extends 660 mm to feed barcode tags from a remote magazine into an automated packaging station, fitting within the tight vertical clearance of the wrapping cell.
Lab Tube Rack Transfer
Moves sample racks between testing modules in a compact diagnostic analyzer, relying on the -S magnet and DMSG sensor to confirm full extension before the gripper releases.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL20X660SU the Right Cylinder?
At 0.5 MPa, this 20 mm bore generates 157 N push and 132 N pull force. If your application requires less force, there is no smaller MBL bore available. If you need more force, step up to the 25 mm bore, which provides 245 N push and 206 N pull at the same pressure. Keep in mind that a plain MBL does not hold its position or load when air pressure is lost or exhausted; the rod will drift or drop. If you must hold a load without live pressure, install an external rod lock or a pilot-operated check valve.
Because the 660 mm stroke exceeds the 500 mm maximum standard stroke, it is a non-standard, made-to-order length. The small Ø8 mm rod on this 20 mm bore offers low side-load tolerance; over a 660 mm extension, the unsupported rod is highly susceptible to bending under lateral loads. You must manage this with an external linear guide, or switch to the MBLD double-rod type to prevent rod deflection and premature seal wear. Replacement match: 20mm bore, 660mm stroke, G1/8 port, PT thread, U flat-end 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 MBL20X660SU FAQ
This 20 mm bore double-acting cylinder delivers 157 N push and 132 N pull at 0.5 MPa, 220 N push at 0.7 MPa, and a maximum theoretical force of 32 kgf at 1.0 MPa. It operates at a speed of 30-800 mm/s. Note that the 660 mm stroke is a non-standard, made-to-order length exceeding the 500 mm standard maximum.
No, the base MBL20X660SU uses a fixed rubber bumper to soften end-of-stroke impact, not an adjustable air cushion. If your application involves fast cycling or heavy masses that require tunable end-cushioning, you should select the MBLC variant instead. The bumper is not a lock and will not hold a load if air pressure is lost.
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