Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X400SCA
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X400SCA is a genuine double-acting aluminum-barrel mini round cylinder with a Ø25mm 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.
- BoreØ25 mm
- Stroke400 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 MBLC25X400SCA
The AirTAC MBLC25X400SCA is a double-acting aluminum mini cylinder engineered for compact spaces requiring a 400 mm stroke. It delivers 245 N of push force and 206 N of pull force at 0.5 MPa. Unlike the standard MBL, this variant features a screw-adjustable pneumatic air cushion at both ends. You tune the needle valves to smoothly decelerate the piston near stroke extremes, absorbing kinetic energy to reduce end-cover impact and vibration on fast moves.
This specific SKU includes a built-in magnet (S) for CMSG, DMSG, or EMSG sensor switches, and a CA pivot back cover that swings on a pin to accommodate arcing loads. The riveted rolling-packed aluminum barrel keeps the body light, while the Ø10 mm carbon-steel rod features 20 µm hard-chrome plating to resist wear. A heterogeneous two-way grease-retaining piston seal ensures consistent lubrication over long cycles.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X400SCA Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X400SCA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø25 mm |
| Stroke | 400 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 MBLC25X400SCA
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 25 | 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 MBLC25X400SCA Is Used
Textile Loom Tensioning
Drives a 400 mm travel guide arm on a weaving machine. The CA pivot absorbs yarn-induced angular stress, while the tunable cushion prevents sudden jerks that would snap delicate threads.
Parcel Divert Arm
Pushes lightweight packages across a sorting line. The 245 N force at 0.5 MPa easily moves boxes, and the built-in magnet allows a DMSG sensor to confirm divert position.
PCB Panel Ejection
Extends to slowly eject assembled circuit boards from a test fixture. The adjustable air cushion ensures the 400 mm stroke decelerates smoothly, protecting sensitive solder joints from impact shock.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X400SCA the Right Cylinder?
Choose this 25 mm bore when you need 245 N of push force at 0.5 MPa over a long 400 mm travel. If your application requires less force, step down to the 20 mm bore, which provides 157 N of push force. If you need to move heavier loads, step up to the 32 mm bore, offering 402 N of push force. Select the MBLC over the base MBL when your cycle speeds are high enough that the fixed rubber bumper cannot adequately absorb the impact.
Because this model features a 400 mm stroke on a Ø10 mm rod, side-load tolerance is low; without proper support, the rod could bend. The CA pivot back cover helps by self-aligning under angular stress, but you should also use an external guide rail or consider the MBLD double-rod type to prevent binding. Note that the adjustable air cushion only decelerates the piston near the ends—it is not a brake and will not hold the load if air pressure is lost.
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 MBLC25X400SCA FAQ
This 25 mm bore cylinder uses a G1/8 port and a Ø10 mm rod. It generates 245 N push and 206 N pull at 0.5 MPa, 343 N push at 0.7 MPa, and a maximum theoretical force of 50 kgf at 1.0 MPa.
A screw-tunable needle valve traps a pocket of exhaust air at the end of the 400 mm stroke, creating pneumatic resistance that decelerates the piston. This minimizes end-cover impact and is superior to a fixed rubber bumper for high-speed cycling, but it does not lock the rod in place.
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