Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X25U
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X25U 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 MBLC20X25U
The AirTAC MBLC20X25U is a double-acting aluminum mini cylinder with a 20mm bore and 25mm stroke. It generates 157 N of push force and 132 N of pull force at 0.5 MPa. The defining feature of this MBLC variant is the screw-adjustable pneumatic cushion at both ends, which decelerates the piston smoothly near stroke limits to reduce end-cover impact and vibration on fast moves.
This U-coded SKU features a rigid flat-end back cover for direct mounting. It uses a G1/8 port and an M8x1.25 rod-end thread. The riveted rolling-packed aluminum barrel keeps the body compact for tight spaces, while the 20 um hard-chrome plating on the carbon-steel rod guards against 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 MBLC20X25U Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X25U |
|---|---|
| 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 MBLC20X25U
| 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 MBLC20X25U Is Used
PCB Drill Spindle Gate
Cycles a 25mm stroke to open and close a safety cover on a micro-drilling spindle, using the adjustable cushion to prevent shock on rapid 157 N closures.
IC Tube Separator
Pushes singulated integrated circuit tubes into test bins, benefiting from the compact 20mm bore and tunable end-deceleration to protect delicate components.
Small-Part Diverter
Actuates a low-profile flap on a conveyor to sort small plastic fasteners, where the short stroke and rigid U back cover ensure precise, repeatable routing.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X25U the Right Cylinder?
With a 25mm stroke, this model suits short, rapid positioning tasks. If you need less force, there is no smaller bore in this series, so you would look outside the family. If your load requires more power, step up to the 25mm bore, which provides 245 N push and 206 N pull at 0.5 MPa. Choose this MBLC over the base MBL when your cycle speed is high enough that a fixed rubber bumper would fail prematurely. Remember that the adjustable air cushion only decelerates the piston near the ends; it is not a brake, and the rod will drift if air pressure is lost or the valve centers. For position holding without live air, use an external rod lock.
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 MBLC20X25U FAQ
At 0.5 MPa, this 20mm bore cylinder provides 157 N push and 132 N pull. At 0.7 MPa, it delivers 220 N push and 185 N pull. The theoretical maximum force is 32 kgf at 1.0 MPa. It operates at speeds between 30 and 800 mm/s.
A screw needle at each end cover lets you tune the pneumatic cushioning to match your load and speed, preventing harsh end-of-stroke impacts. Because this specific U-back SKU lacks the -S magnet option, it cannot accept CMSG, DMSG, or EMSG electronic or reed position switches.
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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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