Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X20SU
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X20SU 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 MBLC Aluminum Alloy Mini Air Cylinder MBLC40X20SU
The AirTAC MBLC40X20SU is a double-acting aluminum mini cylinder engineered for compact actuation. It features a 40mm bore and a 20mm stroke, generating 628N of push force and 528N of pull force at 0.5 MPa. The integrated -S magnet allows position detection via CMSG, DMSG, or EMSG sensor switches, while the U flat-end back cover provides a rigid rear mounting face.
Unlike the standard fixed-bumper MBL, this MBLC variant utilizes a screw-adjustable pneumatic cushion at both stroke ends. This allows you to precisely tune the end-of-stroke deceleration, absorbing impact energy on rapid, high-frequency indexing moves. The riveted rolling-packed aluminum barrel keeps the overall envelope small, and the 20um hard-chrome plated carbon-steel rod resists wear against the heterogeneous two-way grease-retaining piston seal.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X20SU Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X20SU |
|---|---|
| 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 MBLC Aluminum Alloy Mini Air Cylinder MBLC40X20SU
| 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 MBLC Aluminum Alloy Mini Air Cylinder MBLC40X20SU Is Used
PCB Router Spindle
Drives a short 20mm vertical plunge on a high-speed PCB depaneling router, using the tunable cushion to halt the 628N stroke smoothly without shocking the delicate spindle bearings.
Flighted Indexer
Actuates a 20mm pusher dog on a packaging conveyor to divert cartons, relying on the adjustable pneumatic cushion to sustain rapid, high-frequency cycling without end-cover damage.
Connector Press
Performs a short, force-controlled seating of ribbon cable connectors into PCBs, utilizing the integrated magnet for immediate end-of-stroke confirmation via a DMSG solid-state switch.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X20SU the Right Cylinder?
For a 20mm stroke, stepping down to the 32mm bore reduces the output to 402N push at 0.5 MPa, while stepping up to the 50mm bore increases it to 981N. Choose this MBLC over the base MBL when your cycle speed or moving mass would overwhelm a simple rubber bumper. Remember that the adjustable air cushion only decelerates the piston near the ends; it is not a brake and will not hold the rod in place if air pressure is lost. The PT port thread, M12x1.25 rod-end thread, and G1/4 porting are standard for this 40mm bore size.
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 MBLC Aluminum Alloy Mini Air Cylinder MBLC40X20SU FAQ
At 0.5 MPa, this 40mm bore cylinder provides 628N of push force and 528N of pull force. At 0.7 MPa, the push force is 880N. The theoretical maximum force is 128 kgf at 1.0 MPa.
A screw-tunable needle at both ends traps a pocket of exhaust air to decelerate the piston smoothly before it hits the end cover. You dial the needle to match your specific load and speed, which reduces impact noise and vibration on fast 20mm moves; it functions purely as a deceleration device, not a load-holding brake.
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