Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40CA
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40CA 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 MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40CA
The AirTAC MBLC20X40CA is a double-acting aluminum mini cylinder with a 20mm bore and 40mm stroke, generating 157 N of push force at 0.5 MPa. It features a CA pivot clevis back cover that swings on a pin, making it ideal for arcing or angular load paths. Unlike the base MBL, this MBLC variant uses a screw-adjustable pneumatic air cushion at both ends to decelerate the piston smoothly near stroke limits.
This tunable cushioning protects the end covers on faster or high-frequency cycles, cutting impact noise and vibration. The body uses a riveted rolling-packed aluminum barrel for a compact, lightweight footprint in tight spaces, while the Ø8 mm carbon-steel rod features 20 µm hard-chrome plating. Note that this specific SKU lacks a built-in magnet, meaning it cannot accept CMSG, DMSG, or EMSG position sensors.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40CA Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40CA |
|---|---|
| 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 MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40CA
| 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 MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40CA Is Used
Textile Loom Guide
Drives a 40mm yarn guide arm on a weaving loom, using the CA clevis to accommodate the pivot arc while the air cushion softens the high-frequency 157 N strokes.
Packaging Diverter
Pivots a small card deflector on a packaging conveyor, where the compact 20mm body fits between belt rollers and the cushion prevents end-cover hammering.
PCB Shuttle Pusher
Shifts a lightweight PCB shuttle 40mm inside a tight electronics assembly fixture, relying on the smooth deceleration to avoid jarring delicate components.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X40CA the Right Cylinder?
At 157 N push (0.5 MPa), this 20mm bore is the smallest available size. If your application requires less force, you must step up to the 25mm bore, which provides 245 N of push force at 0.5 MPa. Choose the MBLC over the fixed-bumper MBL when your mechanism cycles quickly or moves a heavier mass that requires tunable end-of-stroke deceleration. Remember that the pneumatic cushion only decelerates the piston near the ends; it is not a lock, so the rod will drift if air is lost or the valve centers. The replacement match is: 20mm bore, 40mm stroke, G1/8 port, PT thread, CA pivot cover, no magnet.
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 MBLC20X40CA FAQ
At 0.5 MPa, it provides 157 N of push force and 132 N of pull force. At 0.7 MPa, push increases to 220 N. The maximum theoretical force is 32 kgf at 1.0 MPa.
A screw-tunable needle at both ends restricts the exhaust air as the piston nears the stroke limit, decelerating the load smoothly. You tune it to match your speed and mass, which reduces impact and noise compared to the fixed rubber bumper of the standard MBL.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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