Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X400CA
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X400CA is a genuine double-acting aluminum-barrel mini round cylinder with a Ø20mm bore and 400mm 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
- Stroke400 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 MBLC20X400CA
The AirTAC MBLC20X400CA is a double-acting aluminum mini cylinder with a 20mm bore and 400mm stroke, engineered with a screw-adjustable pneumatic cushion at both ends. It delivers 157N of push force and 132N of pull force at 0.5 MPa. The CA pivot clevis back cover allows the body to swing on a pin, accommodating angular rod movement during arcing travel.
Unlike the base MBL series that relies on a fixed rubber bumper, the MBLC cushion needle is tunable to smoothly decelerate the piston near the stroke extremes, cutting impact shock and vibration on high-frequency moves. The compact body uses a riveted, rolling-packed aluminum barrel for tight spaces, while the 8mm carbon-steel rod features 20µm hard-chrome plating to resist wear. Note that this specific SKU lacks a built-in magnet, so it cannot host a CMSG, DMSG, or EMSG position sensor.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X400CA Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X400CA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø20 mm |
| Stroke | 400 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 MBLC20X400CA
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 20 | Bore size in mm. |
| ×400 | 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 MBLC20X400CA Is Used
Textile Loom Guide
Drives a yarn guide arm through a 400mm arc, using the CA pivot to absorb lateral swing while the adjustable cushion softens the high-frequency stroke reversals.
Package Diverter Arm
Actuates a sorting flap on a packaging line where the tunable end-cushion prevents the lightweight 8mm rod from slamming against the end covers during rapid cycling.
PCB Shuttle Transfer
Moves light electronics trays between test stations, benefiting from the compact riveted aluminum body to fit within tight machine cell clearances.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X400CA the Right Cylinder?
At 400mm of stroke, the 8mm rod has a high susceptibility to bending under side loads; managing this requires an external guide rail, relying on the CA clevis to self-align, or stepping up to a double-rod MBLCD. If you need less reach, the 20mm bore at a 350mm stroke trims length while retaining the 157N/132N force. For higher load capacity, the 25mm bore offers 245N push and 206N pull at 0.5 MPa. Choose this MBLC over the standard MBL when cycling speeds are high enough that a fixed bumper cannot absorb the end-of-stroke kinetic energy. Keep in mind the air cushion only decelerates the piston; it does not lock the rod, which will drift if air pressure is lost or the valve centers. Replacement match: 20mm bore, 400mm stroke, G1/8 port, PT thread, CA pivot back 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 MBLC20X400CA FAQ
The 20mm bore generates 157N push and 132N pull at 0.5 MPa, 220N push and 185N pull at 0.7 MPa, with a maximum theoretical force of 32 kgf at 1.0 MPa. The 400mm stroke is a standard size, as the MBLC 20mm bore supports standard strokes up to 500mm (special orders extend to 800mm).
The cushion is a screw-tunable needle at each end that traps a pocket of air to decelerate the piston smoothly before contact, which is critical for protecting the end covers on faster moves. Because this specific SKU lacks the -S magnet option, you cannot mount an AirTAC CMSG, DMSG, or EMSG sensor switch to detect rod position.
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