Airtac MBL Aluminum Alloy Mini Cylinder MBL20X400U
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL20X400U is a genuine double-acting aluminum-barrel mini round cylinder with a Ø20mm bore and 400mm 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
- Stroke400 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 MBL20X400U
The AirTAC MBL20X400U is a double-acting aluminum mini round cylinder built for compact spaces. It delivers 157 N of push force and 132 N of pull force at 0.5 MPa, making it suited for light-duty positioning over a 400 mm stroke. The U suffix denotes a rigid flat-end rear cover for direct mounting.
Unlike ISO tie-rod bodies, this cylinder uses a riveted rolling-packed barrel that cannot be disassembled, ensuring a lightweight footprint. It relies on a fixed rubber bumper to soften end-of-stroke impacts rather than an adjustable cushion. Because this specific SKU lacks the -S magnet suffix, it cannot accept a CMSG, DMSG, or EMSG position sensor.
Airtac MBL Aluminum Alloy Mini Cylinder MBL20X400U Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL20X400U |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø20 mm |
| Stroke | 400 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 MBL20X400U
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 20 | Bore size in mm. |
| ×400 | 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 MBL20X400U Is Used
PCB Shuttle Pusher
Moves populated PCBs across a 400 mm transfer runway with 157 N of push force, fitting neatly within tight electronics assembly machine clearances.
Socket Tray Ejector
Ejects empty component tape reels from a testing station over a long 400 mm travel distance without requiring a large profile cylinder footprint.
Small Parts Sorter
Diverts lightweight plastic fasteners into secondary packaging bins, utilizing the rigid U flat-end cover to withstand repetitive reaction forces.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL20X400U the Right Cylinder?
For lower force needs, stepping down is not an option as 20 mm is the smallest bore. To increase output, the 25 mm bore provides 245 N push at 0.5 MPa. For single-acting spring-return tasks, consider the MSBL or MTBL variants.
A 400 mm stroke on an 8 mm rod demands careful side-load management; use an external guide rail or switch to the MBLD double-rod type to prevent rod bearing bending. This MBL20X400U uses a G1/8 port, PT thread, M8x1.25 rod end, and a U flat-end cover. Note that the rubber bumper absorbs impact but does not hold loads; if pressure drops, the rod drifts, requiring an external pilot-operated check valve for position holding.
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 MBL20X400U FAQ
The MBL20X400U generates 157 N push and 132 N pull at 0.5 MPa, and 220 N push at 0.7 MPa, with a maximum theoretical force of 32 kgf at 1.0 MPa. It operates at 30-800 mm/s, uses a G1/8 port, and accepts pressures from 0.15 to 1.0 MPa.
This specific SKU lacks the -S suffix, so a position sensor cannot be fitted. For end-of-stroke cushioning, the base MBL uses a fixed rubber bumper; if your application requires adjustable air cushioning for heavier moving masses, upgrade to the MBLC variant.
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