Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X20U
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X20U 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 MBLC40X20U
The AirTAC MBLC40X20U is a double-acting aluminum mini cylinder engineered for compact setups demanding robust force and controlled deceleration. It generates 628 N of push force and 528 N of pull force at 0.5 MPa. The 20 mm stroke is optimal for short clamping or ejecting sequences where abrupt stops would otherwise jar the assembly. Unlike the base MBL, this variant features a screw-adjustable pneumatic cushion at both ends to smoothly brake the piston near stroke limits.
This model incorporates a riveted rolling-packed aluminum barrel for a lightweight yet rigid frame that fits easily into tight machine cells. The Ø16 mm carbon-steel rod features 20 µm hard-chrome plating to resist scuffing, paired with a heterogeneous two-way grease-retaining piston seal that maintains lubrication over millions of cycles. The U flat-end back cover provides a rigid rear mounting face. Because this SKU lacks the -S magnet, it cannot support CMSG, DMSG, or EMSG position sensors.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X20U Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X20U |
|---|---|
| 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 MBLC40X20U
| 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 MBLC40X20U Is Used
PCB Router Clamping
Secures printed circuit boards during routing with 628 N of force. The 20 mm stroke and adjustable cushion absorb the rapid clamping impact without bowing the delicate substrate.
Bottle Diverter Gate
Actuates a short diverter arm on a packaging line. The tunable air cushion ensures the 20 mm stroke snaps into position quickly while preventing mechanical shock to the aluminum bracket.
Connector Insertion Press
Drives a low-profile connector into an electronics housing. The rigid U flat-end back cover withstands the 528 N pull reaction force during rapid retraction.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X20U the Right Cylinder?
Select the MBLC40X20U when your application requires substantial push force in a very tight stroke window. If you need less force, stepping down to the 32 mm bore yields 402 N of push at 0.5 MPa, whereas stepping up to the 50 mm bore provides 981 N for heavier payloads. The defining reason to choose this MBLC over the standard MBL is the adjustable air cushion: it allows you to tune the end-of-stroke deceleration via a needle screw, preventing end-cover damage on rapid, high-frequency movements. Note that the cushion only decelerates the piston; it does not lock the rod. If you need to hold position without live air pressure, an external rod lock or pilot-operated check valve is required. This replacement match features a 40 mm bore, 20 mm stroke, G1/4 port, PT thread, and a U flat-end back cover.
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 MBLC40X20U FAQ
The MBLC40X20U uses a G1/4 port and a Ø16 mm rod. At 0.5 MPa it provides 628 N push and 528 N pull. At 0.7 MPa, push increases to 880 N. The maximum theoretical force is 128 kgf at 1.0 MPa.
No, because this specific SKU lacks the built-in -S magnet, it cannot detect rod position. To use AirTAC CMSG (reed), DMSG, or EMSG (electronic) sensor switches, you must order the -S variant of the MBLC series.
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