Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X400SU
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X400SU 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 MBLC20X400SU
The AirTAC MBLC20X400SU is a double-acting aluminum mini cylinder featuring a 20 mm bore and a 400 mm stroke. It generates 157 N of push force and 132 N of pull force at 0.5 MPa. The riveted rolling-packed aluminum barrel keeps the body compact and lightweight for tight machinery spaces, while the Ø8 mm carbon-steel rod features a 20 um hard-chrome plating to resist corrosion and scoring.
This SKU is equipped with a screw-adjustable pneumatic air cushion at both stroke ends, allowing you to tune the end-of-stroke deceleration to protect the end covers on faster moves. The built-in magnet (-S) supports AirTAC CMSG, DMSG, and EMSG sensor switches for rod position detection, and the U flat-end back cover provides a rigid rear mounting surface.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X400SU Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X400SU |
|---|---|
| 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 MBLC20X400SU
| 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 MBLC20X400SU Is Used
PCB Edge-Guiding Arm
Drives a lightweight guiding flap on a conveyor processing printed circuit boards, using the 400 mm stroke to clear the work area for robotic pick-and-place arms.
Thin-Wall Component Ejector
Pushes delicate plastic or stamped metal parts out of a press die over 400 mm, relying on the tuned air cushion to prevent the end-cover impact that would jar the components.
Packaging Flap Folder
Actuates a carton folding blade inside a compact packaging machine, where the 157 N force is sufficient and the built-in magnet confirms flap deployment via a DMSG sensor.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X400SU the Right Cylinder?
At 0.5 MPa, this 20 mm bore delivers 157 N push and 132 N pull. If your application requires less force, there is no smaller bore in the MBL/MBLC range; if you need more power, stepping up to the 25 mm bore yields 245 N push and 206 N pull. Choose this MBLC version over the base MBL when cycle speeds or moving masses exceed what a fixed rubber bumper can safely absorb. For position holding without live air, note that a plain MBLC does not lock the rod when exhausted; an external rod lock or pilot-operated check valve is required.
Because this model features a long 400 mm stroke paired with a small Ø8 mm rod, side-load tolerance is minimal. To prevent rod bending and premature seal wear, use an external guide rail, select a CA or SDB pivot mount to accommodate arcing loads, or switch to an MBLD double-rod cylinder. The exact replacement match is: 20 mm bore, 400 mm stroke, G1/8 port, PT thread, U back cover, and an -S 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 MBLC20X400SU FAQ
This 20 mm bore cylinder provides 157 N push and 132 N pull at 0.5 MPa, 220 N push at 0.7 MPa, and a maximum theoretical force of 32 kgf at 1.0 MPa. It uses a G1/8 port, a PT thread form, and an M8x1.25 rod-end thread.
A screw-tunable needle valve at both ends traps a small amount of exhaust air to decelerate the piston smoothly before it hits the end cover. You adjust it to match your load and speed, which reduces noise and impact; it is a dampener, not a mechanical lock or brake.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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