Airtac MBL Aluminum Alloy Mini Cylinder MBL32X125SU
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL32X125SU is a genuine double-acting aluminum-barrel mini round cylinder with a Ø32mm 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.
- BoreØ32 mm
- Stroke125 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 MBL32X125SU
The AirTAC MBL32X125SU is a compact double-acting aluminum mini round cylinder engineered for tight machine spaces. It features a 32mm bore and 125mm stroke, generating 402N of push force at 0.5MPa. The U flat-end back cover provides a rigid fixed rear mount, ideal for straight-line push applications where angular swing is not required. Because this SKU includes the -S suffix, it has a built-in magnet for non-contact position detection using AirTAC CMSG reed or DMSG/EMSG electronic sensor switches.
Unlike ISO tie-rod cylinders, this unit uses a riveted rolling-packed barrel where the front and back covers are crimped directly to the tube, yielding a lightweight footprint that is not designed to be disassembled. The carbon-steel piston rod features 20μm hard-chrome plating for wear resistance, paired with a heterogeneous two-way piston seal that retains grease for a long service life. End-of-stroke impact is absorbed by a fixed rubber bumper, which softens the stop but does not lock the rod in place if air pressure is lost.
Airtac MBL Aluminum Alloy Mini Cylinder MBL32X125SU Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL32X125SU |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø32 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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 MBL32X125SU
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 32 | 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 MBL Aluminum Alloy Mini Cylinder MBL32X125SU Is Used
PCB Router Gantry
Drives a light pick-and-place head on a printed circuit board router gantry, using the 402N thrust to seat surface mount components precisely within a 125mm travel envelope.
Carton Flap Folder
Actuates a folding arm on a compact packaging line to close small corrugated carton flaps, where the rigid U flat-end rear mount ensures straight-line stability without side play.
Sample Tube Ejector
Ejects filled centrifuge tubes from a testing carousel in a lab automation rack, using the built-in magnet to trigger a DMSG solid-state sensor for a timed 125mm ejection stroke.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL32X125SU the Right Cylinder?
If you need less force, step down to the MBL25 bore, which provides 245N push at 0.5MPa. If your application requires heavier thrust, step up to the MBL40, delivering 628N push at 0.5MPa. For faster or heavier moving loads that require end-stroke speed tuning, select the MBLC variant, which replaces the fixed rubber bumper with an adjustable air cushion.
The U flat-end back cover on this SKU mounts rigidly, while the PT tapered port thread matches the standard G1/8 port size for this 32mm bore. Because this is a double-acting cylinder, air both extends and retracts the rod, but it will not hold a load if pressure is exhausted or the valve is centred; use an external pilot-operated check valve if position holding is critical. At 125mm stroke, the 12mm rod handles normal loads well, but for longer unsupported strokes approaching 300mm or more, consider adding an external guide rail, a CA pivot back cover, or the MBLD double-rod cylinder to prevent rod bending under side load.
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 MBL32X125SU FAQ
At 0.5MPa the cylinder pushes with 402N and pulls with 346N. At 0.7MPa the push force increases to 563N. The maximum theoretical force is 82 kgf when operated at the 1.0MPa pressure limit.
No, the base MBL32X125SU uses a fixed rubber bumper to soften end-of-stroke impacts and cannot be adjusted. If you need adjustable cushioning for heavier loads, choose the MBLC variant, which features an adjustable air cushion screw.
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