Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X125U
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X125U is a genuine double-acting aluminum-barrel mini round cylinder with a Ø25mm bore and 125mm stroke, G1/8 air ports and a fixed rubber bumper. Its compact riveted body suits push, hold and clamp motion in tight machine spaces.
- BoreØ25 mm
- Stroke125 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionRubber bumper (MBLC variant: adjustable air cushion)
About the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X125U
The AirTAC MBLC25X125U is a compact double-acting aluminum mini cylinder with a 25mm bore and 125mm stroke. It delivers 245N push and 206N pull at 0.5MPa, making it well-suited for mid-length transfer and indexing tasks. Unlike the base MBL, this variant features a screw-adjustable pneumatic cushion at both ends, allowing you to tune the end-of-stroke deceleration to match moving masses and reduce impact noise.
This U-code SKU uses a rigid flat-end back cover and a default PT tapered port thread. The body utilizes a riveted rolling-packed aluminum barrel for lightweight strength, rather than a rebuildable tie-rod design. The Ø10mm carbon-steel rod features 20um hard-chrome plating, and the heterogeneous two-way grease-retaining piston seal ensures lasting friction-free operation. 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 MBLC25X125U Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X125U |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø25 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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 (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | — |
| Max (@1.0 MPa) | 50 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 MBLC25X125U
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 25 | Bore size in mm. |
| ×125 | 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 MBLC25X125U Is Used
PCB Conveyor Gate
Actuates a 125mm lift gate on a printed circuit board transport conveyor, using the tunable cushion to softly stop the 245N moving frame without jarring delicate electronics.
IC Tray Elevator
Raises stacked integrated circuit trays in a test handler; the adjustable pneumatic end-cushion prevents the 0.5MPa thrust from slamming the lightweight aluminum lift plate.
Carton Flap Folder
Drives a 125mm folding arm on a small carton sealer, relying on the riveted aluminum body and 206N pull force to tuck flaps at high speed in a compact packaging machine footprint.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X125U the Right Cylinder?
Choose this 25mm bore when you need 245N of push force at 0.5MPa for a fast-cycling 125mm move. If your load is lighter, stepping down to the 20mm bore yields 157N push force and saves space. If you need more thrust, the 32mm bore provides 402N push at 0.5MPa. Select the MBLC over the fixed-bumper MBL when your cycle speed or payload mass risks damaging the end covers on a hard stop. Remember that the adjustable air cushion only decelerates the piston near the stroke ends; it is not a brake, and the rod will drift if air pressure is lost or exhausted. For position holding without live air, add an external rod lock.
This U-type flat-end back cover provides rigid, inline mounting. For your replacement match, verify the 25mm bore, 125mm stroke, G1/8 port, PT thread, U flat-end cover, and the absence of an S-magnet. Since the 125mm stroke is substantial for a Ø10mm rod, minimize side-loading by using an external guide rail or a pivot mounting bracket to prevent rod bending and premature seal wear.
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 MBLC25X125U FAQ
This 25mm bore cylinder uses a G1/8 port and a Ø10mm rod with an M10x1.25 thread. At 0.5MPa it provides 245N push and 206N pull. At 0.7MPa it provides 343N push and 289N pull. The maximum theoretical force is 50kgf at 1.0MPa.
The screw-tunable pneumatic cushion at both ends decelerates the piston smoothly near stroke ends, which is critical for protecting end covers on fast 125mm moves. It is strictly a deceleration device, not a load lock; the rod will drift if air is lost. Also, this specific SKU has no built-in magnet, so CMSG or DMSG sensors cannot be fitted.
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