Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X40U
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X40U 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 MBLC25X40U
The AirTAC MBLC25X40U is a compact double-acting aluminum mini cylinder engineered for tight spaces, delivering 245 N of push force and 206 N of pull force at 0.5 MPa. Its 40 mm stroke is well-suited for short, rapid positioning 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 your load and speed, thereby reducing impact noise and end-cover wear.
This model uses a G1/8 port and a Ø10 mm carbon-steel rod with 20 µm hard-chrome plating to resist corrosion and scoring. The riveted rolling-packed aluminum barrel keeps the body light and compact, while the heterogeneous two-way grease-retaining piston seal ensures consistent lubrication over the 30-800 mm/s operating speed range. The U designation indicates a rigid flat-end back cover for direct mounting, and because this specific SKU lacks the -S suffix, it is not equipped with a magnet and cannot support CMSG, DMSG, or EMSG position sensors.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X40U Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X40U |
|---|---|
| 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 MBLC25X40U
| 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 MBLC25X40U Is Used
PCB Depaneling Ejector
Provides a fast 40 mm stroke to push singulated circuit boards out of a routing fixture, using the adjustable cushion to prevent the 245 N thrust from bouncing delicate components off the conveyor.
Connector Insertion Press
Drives a 25 mm bore pin into a tight electronics socket, relying on the tunable end-of-stroke deceleration to seat the part firmly without damaging the housing.
Pharmacy Drawer Latch
Actuates a compact locking pin in an automated dispensing cabinet, where the 206 N pull force retracts the latch and the flat-end U cover mounts flush to the steel frame.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X40U the Right Cylinder?
Select this 25 mm bore when an application requires 245 N of thrust at 0.5 MPa. If your load is lighter, stepping down to the 20 mm bore provides 157 N of push force, whereas stepping up to the 32 mm bore yields 402 N for heavier demands. The defining reason to choose this MBLC over the standard MBL is the adjustable air cushion; if your machine cycles rapidly and the fixed rubber bumper of the base model causes excessive shock or vibration, the tunable needle valves here smoothly decelerate the piston.
For replacement, verify the 25 mm bore, 40 mm stroke, G1/8 port, and PT tapered thread form. The U flat-end back cover provides a rigid rear mount, and no magnet is fitted. Keep in mind that the air cushion only decelerates the piston near the stroke ends; it is not a brake, so the rod will drift 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 MBLC25X40U FAQ
At 0.5 MPa, this 25 mm bore cylinder provides 245 N of push force and 206 N of pull force. At 0.7 MPa, the push increases to 343 N. The theoretical maximum is 50 kgf at 1.0 MPa. It uses a G1/8 port and an M10x1.25 rod-end thread.
No, this specific SKU does not have the -S suffix, meaning it lacks a built-in piston magnet. To use AirTAC CMSG, DMSG, or EMSG sensor switches for rod position detection, you would need the MBLC25X40S variant instead.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC25X40U
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.