Airtac MBL Aluminum Alloy Mini Cylinder MBL20X550SCA
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL20X550SCA is a genuine double-acting aluminum-barrel mini round cylinder with a Ø20mm bore and 550mm 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
- Stroke550 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 MBL20X550SCA
The AirTAC MBL20X550SCA is a compact double-acting aluminum mini round cylinder engineered for tight machine spaces. Delivering 157 N of push force and 132 N of pull force at 0.5 MPa, this 20 mm bore unit features a 550 mm stroke. Because this length exceeds the 500 mm standard maximum, it is manufactured as a non-standard, made-to-order stroke to meet specific long-reach clamping or ejection requirements. The riveted rolling-packed barrel keeps the body light and compact, though it is not designed to be disassembled like a tie-rod cylinder.
This specific SKU includes a built-in magnet (-S) for use with AirTAC CMSG reed and DMSG or EMSG electronic solid-state sensor switches to detect rod position. It is fitted with a CA pivot back cover, allowing the cylinder body to swing on a pin to accommodate arcing or angular loads. The carbon-steel piston rod features 20 µm hard-chrome plating for wear and corrosion resistance, and a heterogeneous two-way piston seal retains grease for extended operational life. End-of-stroke impact is absorbed by a fixed rubber bumper, not an adjustable air cushion.
Airtac MBL Aluminum Alloy Mini Cylinder MBL20X550SCA Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL20X550SCA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø20 mm |
| Stroke | 550 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 MBL20X550SCA
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 20 | Bore size in mm. |
| ×550 | 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 MBL20X550SCA Is Used
Long-Reach Part Ejection
Pushes light machined plastic parts out of a 550 mm deep CNC enclosure using 157 N of force, where the CA pivot back cover accommodates slight misalignment in the ejection trajectory.
Arcing Diverter Arm
Actuates a swinging guide arm along a packaging conveyor to sort small cartons, utilizing the cylinder's pivot mount to swing freely on a pin as it extends across the belt.
Tall Stack Pusher
Advances a lightweight product stacker to a 550 mm height limit, relying on the built-in magnet and a DMSG electronic sensor to confirm the full extension position for the PLC.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL20X550SCA the Right Cylinder?
At 0.5 MPa, this 20 mm bore cylinder provides 157 N push and 132 N pull force. If your application requires less force, the MBL line does not offer a smaller bore, so you would look outside this series for a micro-compact alternative. If you need more power, stepping up to the 25 mm bore yields 245 N push and 206 N pull at the same pressure. For applications needing end-of-stroke speed regulation on heavier moving masses, consider the MBLC variant which features an adjustable air cushion instead of the fixed rubber bumper. If the job requires single-acting spring-return motion, use the MSBL (push) or MTBL (pull) series.
Because the stroke is 550 mm on an 8 mm rod, the cylinder has low side-load tolerance and the unsupported rod is highly susceptible to bending under lateral stress. An external linear guide is strongly recommended to prevent rod-bearing damage, or you can rely on the CA pivot back cover to self-align with the load's arc. For rigid anti-rotation needs over this long stroke, the MBLD double-rod type is a better choice. Note that a plain MBL does not hold its position or load when air pressure is lost or the valve is centered; the rod will drift or drop. Use an external rod lock or pilot-operated check valve if position must be maintained without live pressure. Replacement match: 20 mm bore, 550 mm stroke, G1/8 port, PT thread, CA pivot back cover, magnet included (-S).
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 MBL20X550SCA FAQ
This 20 mm bore cylinder provides 157 N push and 132 N pull force at 0.5 MPa, 220 N push at 0.7 MPa, and a maximum theoretical force of 32 kgf at 1.0 MPa. The 550 mm stroke exceeds the 500 mm standard maximum, making it a non-standard, made-to-order stroke length.
No, the base MBL uses a fixed rubber bumper to soften end-of-stroke impact, not an adjustable air cushion (you need the MBLC variant for adjustable cushioning). Additionally, the cylinder does not hold its load if air pressure is lost or exhausted; the rod will drift or drop, requiring an external rod lock for position holding.
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