Airtac MBL Aluminum Alloy Mini Cylinder MBL25X120SU
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL25X120SU is a genuine double-acting aluminum-barrel mini round cylinder with a Ø25mm bore and 120mm 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
- Stroke120 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionRubber bumper (MBLC variant: adjustable air cushion)
About the Airtac MBL Aluminum Alloy Mini Cylinder MBL25X120SU
The AirTAC MBL25X120SU is a compact double-acting aluminum mini round cylinder engineered for tight machine spaces. It delivers a push force of 245 N and pull of 206 N at 0.5 MPa, making it well-suited for 120 mm travel tasks like indexing small trays. The riveted rolling-packed barrel keeps the body light and small, though it is not designed to be disassembled like a tie-rod cylinder.
This specific SKU includes a U flat-end back cover for rigid mounting and a built-in magnet (-S) for non-contact position detection using CMSG reed or DMSG/EMSG electronic sensor switches. The carbon-steel piston rod features a 20 um hard-chrome plating for wear resistance, paired with a heterogeneous two-way piston seal that retains grease for long operational life.
Airtac MBL Aluminum Alloy Mini Cylinder MBL25X120SU Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL25X120SU |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø25 mm |
| Stroke | 120 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 MBL Aluminum Alloy Mini Cylinder MBL25X120SU
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 25 | Bore size in mm. |
| ×120 | 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 MBL Aluminum Alloy Mini Cylinder MBL25X120SU Is Used
PCB Shuttle Transfer
Provides 245 N of push force at 0.5 MPa to advance populated PCB shuttle carts exactly 120 mm along a tight conveyor rail in SMT lines.
Connector Insertion Jig
Drives a 120 mm stroke to press electronic pin headers into housings, using the built-in -S magnet to trigger a DMSG sensor for precise end-position verification.
Small Carton Flap Folder
Uses its 206 N pull force at 0.5 MPa to tuck rear flaps on small packaging cartons, fitting neatly within the narrow mechanical footprint of a sealing machine.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL25X120SU the Right Cylinder?
Stepping down to the 20 mm bore reduces the push force to 157 N at 0.5 MPa, while moving up to the 32 mm bore increases it to 402 N. Because this 120 mm stroke creates an unsupported length prone to bending under side loads, an external guide or a pivot bracket is recommended to protect the Ø10 mm rod. The base MBL uses a fixed rubber bumper to soften end-of-stroke impact; for heavier loads requiring an adjustable air cushion, select the MBLC variant. Note that this cylinder will drift if air pressure is lost and does not hold position without a pilot-operated check valve. Replacement match: 25 mm bore, 120 mm stroke, G1/8 port, PT thread, U flat-end back cover, no mounting accessory, -S magnet.
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 MBL Aluminum Alloy Mini Cylinder MBL25X120SU FAQ
At 0.5 MPa, this 25 mm bore cylinder provides a push force of 245 N and a pull force of 206 N. At 0.7 MPa, the push force increases to 343 N. The maximum theoretical force is 50 kgf at 1.0 MPa.
No, the base MBL25X120SU uses a fixed rubber bumper to absorb impact, not an adjustable air cushion. If your application requires adjustable cushioning for faster cycling or heavier moving masses, you should select the MBLC variant.
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