Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X40SU
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X40SU is a genuine double-acting aluminum-barrel mini round cylinder with a Ø25mm bore and 40mm 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
- Stroke40 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 MBLC25X40SU
The AirTAC MBLC25X40SU is a double-acting aluminum mini cylinder with a 25mm bore and 40mm stroke, delivering 245 N push and 206 N pull at 0.5 MPa. The built-in magnet (-S) enables position detection using AirTAC CMSG, DMSG, or EMSG sensor switches. A screw-adjustable pneumatic cushion at both ends decelerates the piston smoothly near stroke limits, protecting the U flat-end rear cover from impact on faster moves. This is not a load lock or brake.
The riveted rolling-packed aluminum barrel keeps the body compact for tight spaces, unlike bulky tie-rod rebuilds. A heterogeneous two-way grease-retaining piston seal and a 20 µm hard-chrome plated carbon-steel rod ensure durable, low-friction operation. The 10 mm rod and G1/8 port suit compact automation where precise, short-stroke actuation is needed.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X40SU Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X40SU |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø25 mm |
| Stroke | 40 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 MBLC25X40SU
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 25 | Bore size in mm. |
| ×40 | 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 MBLC25X40SU Is Used
PCB Pick-and-Place
Drives short 40mm vertical pick-and-place strokes on PCB assembly handlers, using 245 N push to lift delicate boards while the air cushion prevents abrupt end-stop shock.
Chip Test Socket
Actuates semiconductor test sockets with precise 25mm bore force, relying on the magnet for DMSG sensor feedback to verify engagement.
Pouch Dispenser
Indexes packaging film on a small pouch conveyor, where the compact riveted barrel fits tight side frames and the cushion softens high-frequency 40mm retraction.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X40SU the Right Cylinder?
For lower force needs, the 20mm bore offers 157 N push at 0.5 MPa; for higher loads, step up to the 32mm bore providing 402 N push. Choose this MBLC over the base MBL when cycling faster or moving enough mass that a fixed rubber bumper cannot absorb the impact. The U flat-end cover provides rigid mounting. The -S magnet supports CMSG (reed) and DMSG/EMSG (electronic) sensors. A plain double-acting cylinder drifts when air is lost; use an external rod lock for position holding. Replacement match: 25mm bore, 40mm stroke, G1/8 port, PT thread, U back cover, magnet included.
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 MBLC25X40SU FAQ
At 0.5 MPa it provides 245 N push and 206 N pull. At 0.7 MPa it provides 343 N push. The maximum theoretical force is 50 kgf at 1.0 MPa.
A screw-tunable needle at both ends restricts exhaust air flow near the stroke limits, decelerating the piston smoothly. You tune it to match the load and speed, reducing impact and noise over a fixed rubber bumper.
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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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