Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X25SU
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X25SU is a genuine double-acting aluminum-barrel mini round cylinder with a Ø20mm bore and 25mm 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
- Stroke25 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 MBLC20X25SU
The AirTAC MBLC20X25SU is a compact double-acting aluminum mini cylinder engineered for tight spaces where precise short-stroke actuation is required. It delivers 157 N of push force and 132 N of pull force at 0.5 MPa, making it well-suited for light-duty positioning and ejection tasks. Unlike the base MBL series, this variant features a screw-adjustable pneumatic cushion at both ends to smoothly decelerate the piston near the stroke limits, reducing impact noise and wear on faster cycles.
This 20 mm bore model incorporates a riveted rolling-packed aluminum barrel for a lightweight yet rigid body that fits into cramped machine layouts. It carries a built-in magnet (indicated by the S code) for compatibility with AirTAC CMSG, DMSG, and EMSG sensor switches to track rod position. The U code specifies a flat-end rear cover for rigid mounting, while the heterogeneous two-way grease-retaining piston seal and 20 um hard-chrome plated carbon-steel rod ensure consistent friction and longevity.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X25SU Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X25SU |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø20 mm |
| Stroke | 25 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 MBLC20X25SU
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 20 | Bore size in mm. |
| ×25 | 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 MBLC20X25SU Is Used
PCB Depaneling Ejector
Provides 157 N of push force at 0.5 MPa to eject freshly routed circuit boards from a routing fixture without marring the surface.
IC Test Handler Pusher
Uses the 25 mm stroke to push semiconductor packages into a test socket, relying on the adjustable cushion to prevent hard impacts at high cycle rates.
Small Parts Diverter
Actuates a narrow flap on a conveyor line to divert small plastic components, fitting easily into the existing 20 mm bore footprint.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X25SU the Right Cylinder?
When sizing this 20 mm bore actuator, stepping up to the 25 mm bore increases thrust to 245 N at 0.5 MPa for heavier resistance, while stepping down is not an option as this is the smallest available frame. Choose this MBLC version over the fixed-bumper MBL when your cycle speeds exceed what a rubber bumper can absorb quietly. The 25 mm stroke is standard and non-special. Ensure you match the replacement specifications exactly: 20 mm bore, 25 mm stroke, G1/8 port, PT thread, U flat-end back cover, and the S magnet option. Remember that the adjustable air cushion only decelerates the piston near the end of travel; it is not a brake and will not hold the rod in place if air pressure is lost or the valve centers.
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 MBLC20X25SU FAQ
At 0.5 MPa, this 20 mm bore cylinder provides 157 N of push force and 132 N of pull force. At 0.7 MPa, it provides 220 N of push force. The theoretical maximum holding force is 32 kgf at 1.0 MPa.
The cushion is a screw-tunable needle valve at both ends of the cylinder. You adjust it to match your load and speed, trapping a pocket of air to decelerate the piston smoothly before it hits the end cover. This reduces vibration and noise compared to a fixed rubber bumper, but it does not lock or hold the load.
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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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