Airtac MBL Aluminum Alloy Mini Cylinder MBL20X40SCA
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL20X40SCA is a genuine double-acting aluminum-barrel mini round cylinder with a Ø20mm bore and 40mm 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
- Stroke40 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 MBL20X40SCA
The AirTAC MBL20X40SCA is a compact double-acting aluminum mini round cylinder engineered for tight machine spaces. Operating at 0.5 MPa, it delivers 157 N of push force and 132 N of pull force over a 40 mm stroke. The riveted rolling-packed barrel design keeps the body exceptionally light and small, firmly establishing it as a non-ISO 6432 alternative for footprint-driven assemblies. This specific SKU includes a built-in magnet (-S) for rod position detection.
Because this configuration uses the CA pivot back cover, the cylinder body swings freely on a pin to accommodate arcing or angular loads. It pairs seamlessly with an SDB pivot bracket. The Ø8 mm carbon-steel piston rod features 20 µm hard-chrome plating for wear resistance, while a heterogeneous two-way piston seal retains grease for a long, maintenance-free service life.
Airtac MBL Aluminum Alloy Mini Cylinder MBL20X40SCA Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL20X40SCA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø20 mm |
| Stroke | 40 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 MBL20X40SCA
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 20 | Bore size in mm. |
| ×40 | 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 MBL20X40SCA Is Used
PCB Pick-and-Place Gate
Actuates a lightweight routing gate in a PCB assembly line, where the 157 N push force at 0.5 MPa easily moves the mechanism and the CA pivot absorbs minor angular misalignment.
Connector Insertion Arm
Drives a low-friction arm pressing wire harness connectors into sockets, utilizing the 40 mm stroke and the -S magnet to confirm proper insertion via a DMSG solid-state sensor.
Carton Flap Diverter
Pivots a small guide flap on a packaging conveyor to sort small cartons, relying on the compact riveted aluminum body to fit within the tight conveyor frame clearances.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL20X40SCA the Right Cylinder?
Select this 20 mm bore when your application requires approximately 157 N of push force at 0.5 MPa in a compact footprint. If you need less force, step down is not possible as this is the smallest MBL size. If you need more force, step up to the 25 mm bore, which provides 245 N of push force at 0.5 MPa. The G1/8 port and M8x1.25 rod thread are fixed by the 20 mm bore. This SKU includes the -S magnet for use with CMSG, DMSG, or EMSG sensor switches, and uses the CA pivot back cover with default PT thread.
The base MBL uses a fixed rubber bumper to soften end-of-stroke impacts; it is not an adjustable air cushion. If your payload requires deceleration control, consider the MBLC variant. Note that a plain MBL cannot hold a load when air pressure is lost—the bumper is not a locking mechanism. Use an external rod lock or pilot-operated check valve if position holding is required.
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 MBL20X40SCA FAQ
At 0.5 MPa, this 20 mm bore cylinder provides 157 N of push force and 132 N of pull force. At 0.7 MPa, the push force increases to 220 N. The theoretical maximum force is 32 kgf at 1.0 MPa. It operates at pressures from 0.15-1.0 MPa with a speed range of 30-800 mm/s.
This model features a fixed rubber bumper that softens the end-of-stroke impact; it does not have an adjustable air cushion (for that, choose the MBLC variant). However, because it includes the -S magnet, you can mount AirTAC CMSG (reed) or DMSG/EMSG (electronic) sensor switches directly onto the body to detect rod position.
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