Airtac MBL Aluminum Alloy Mini Cylinder MBL40X20SU
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL40X20SU is a genuine double-acting aluminum-barrel mini round cylinder with a Ø40mm bore and 20mm stroke, G1/4 air ports and a fixed rubber bumper. Its compact riveted body suits push, hold and clamp motion in tight machine spaces.
- BoreØ40 mm
- Stroke20 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionRubber bumper (MBLC variant: adjustable air cushion)
About the Airtac MBL Aluminum Alloy Mini Cylinder MBL40X20SU
The AirTAC MBL40X20SU is a compact double-acting aluminum mini round cylinder engineered for tight machine spaces. It delivers a robust 628 N push force at 0.5 MPa alongside a 528 N pull force, making this 40 mm bore, 20 mm stroke unit ideal for short, powerful linear movements.
This SKU features a built-in magnet (-S) for non-contact position detection using CMSG reed or DMSG/EMSG electronic switches. The U flat-end back cover provides a rigid rear mount, while the riveted rolling-packed barrel permanently crimps the covers to the tube for a lightweight, tamper-proof body. Impact at end-of-stroke is absorbed by a fixed rubber bumper.
Airtac MBL Aluminum Alloy Mini Cylinder MBL40X20SU Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL40X20SU |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 20 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 MBL40X20SU
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 40 | Bore size in mm. |
| ×20 | 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 MBL40X20SU Is Used
PCB Edge Connector Clamping
Uses the 628 N push force at 0.5 MPa to securely hold edge connectors during automated wave soldering without damaging delicate fiberglass boards.
Bottle Diverter Gate
Leverages the short 20 mm stroke and built-in magnet to rapidly actuate a routing flap on a packaging line, confirming position via a DMSG sensor.
Carton Flap Tucking
Fits into narrow sealing head frames to tuck minor flaps on small cartons, relying on the rigid U flat-end back cover for a stable fixed mount.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL40X20SU the Right Cylinder?
Select this 40 mm bore when a smaller 32 mm cylinder (providing 402 N push at 0.5 MPa) lacks power, but a 50 mm bore (981 N push) is physically too large for the envelope. The 20 mm stroke excels at high-cycle clamping or ejecting. If your machine requires softer end-stopping for faster cycling, step up to the MBLC variant for its adjustable air cushion. Remember that the fixed rubber bumper only softens impact; it does not hold the load if air pressure drops, so fit an external pilot check valve if rod drift causes issues.
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 MBL40X20SU FAQ
This 40 mm bore cylinder uses a G1/4 port and a Ø16 mm rod. It generates 628 N push and 528 N pull at 0.5 MPa, 880 N push at 0.7 MPa, with a maximum theoretical force of 128 kgf at 1.0 MPa.
No, the base MBL uses a fixed rubber bumper to soften end-of-stroke impact. If you need adjustable air cushioning to handle heavier moving masses at higher speeds, you must select the MBLC variant.
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