Airtac MBL Aluminum Alloy Mini Cylinder MBL20X500SU
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL20X500SU is a genuine double-acting aluminum-barrel mini round cylinder with a Ø20mm bore and 500mm 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
- Stroke500 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 MBL20X500SU
The AirTAC MBL20X500SU is a compact double-acting aluminum mini round cylinder engineered for tight machine spaces. At 0.5 MPa it yields 157 N push and 132 N pull force, suited for light-duty positioning. This 500 mm stroke is a non-standard made-to-order length, maximizing the 20 mm bore's reach up to the 800 mm limit. The riveted rolling-packed barrel permanently crimps the covers to the tube, creating an exceptionally light body that is not designed to be disassembled like a tie-rod cylinder.
This SKU includes a U flat-end back cover for rigid fixed mounting and a built-in -S magnet for position detection. The magnet interfaces seamlessly with AirTAC CMSG reed and DMSG/EMSG electronic sensor switches. Inside, a heterogeneous two-way piston seal retains grease for long service life, while the Ø8 mm carbon-steel piston rod features 20 µm hard-chrome plating to resist wear and corrosion.
Airtac MBL Aluminum Alloy Mini Cylinder MBL20X500SU Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL20X500SU |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø20 mm |
| Stroke | 500 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 MBL20X500SU
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 20 | Bore size in mm. |
| ×500 | 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 MBL20X500SU Is Used
PCB Conveyor Diverter
Pushes lightweight routing gates on a PCB conveyor line, utilizing the 157 N push force and 500 mm reach to span wide transfer belts.
Pneumatic Parts Ejector
Sweeps small molded plastic parts off an injection molding machine bed over a 500 mm stroke, where the compact 20 mm body fits tight tooling clearances.
Tester Probe Actuator
Drives a testing probe array across a 500 mm travel to contact electronic connectors, relying on the -S magnet to trigger CMSG reed sensors for precise end-position confirmation.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL20X500SU the Right Cylinder?
For less extension, the MBL20X400SU provides identical 157 N push force in a shorter 400 mm package. If you need more power, the MBL25X500SU steps up to 245 N push at 0.5 MPa. The base MBL uses a fixed rubber bumper to soften end-of-stroke impact; for adjustable air cushioning to handle faster cycling or heavier moving masses, specify the MBLC variant.
At 500 mm stroke, the small Ø8 mm rod has low side-load tolerance and risks bearing bending under lateral forces. Use an external guide rail, pair the cylinder with a pivot bracket, or switch to the MBLD double-rod anti-rotation type. Note that a plain MBL does not hold its load if air pressure drops or the valve centers; the rod drifts. Use an external rod lock or pilot-operated check valve for fail-safe position holding. Replacement match: 20 mm bore, 500 mm stroke, G1/8 port, PT thread, U 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 MBL20X500SU FAQ
The MBL20X500SU 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. The 500 mm stroke is a non-standard made-to-order length, extending up to the 800 mm maximum limit for this 20 mm bore series.
No, the base MBL20X500SU uses a fixed rubber bumper to absorb end-of-stroke impact, not an adjustable cushion screw. If your application requires adjustable air cushioning for heavier loads or faster speeds, you must upgrade to the MBLC variant.
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