Airtac MBL Aluminum Alloy Mini Cylinder MBL40X120SCA
The AirTAC Airtac MBL Aluminum Alloy Mini Cylinder MBL40X120SCA is a genuine double-acting aluminum-barrel mini round cylinder with a Ø40mm bore and 120mm stroke, G1/4 air ports and a fixed rubber bumper. Its compact riveted body suits push, hold and clamp motion in tight machine spaces.
- BoreØ40 mm
- Stroke120 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionRubber bumper (MBLC variant: adjustable air cushion)
About the Airtac MBL Aluminum Alloy Mini Cylinder MBL40X120SCA
The AirTAC MBL40X120SCA is a double-acting aluminum mini round cylinder engineered for tight machine spaces. It delivers 628 N of push force and 528 N of pull force at 0.5 MPa, making it well-suited for 120 mm stroke actuation tasks that require moderate thrust in a compact footprint. The riveted rolling-packed barrel permanently crimps the front and rear covers to the tube, creating a lightweight, sealed body that is not designed to be disassembled like a traditional tie-rod cylinder.
This specific SKU includes a CA pivot back cover, allowing the cylinder body to swing freely on a pin to accommodate arcing or angular loads. It also features a built-in magnet (-S) for use with AirTAC CMSG reed or DMSG/EMSG electronic sensor switches to detect rod position. The Ø16 mm carbon-steel piston rod is plated with 20 µm of hard chrome for wear and corrosion resistance, while the heterogeneous two-way piston seal retains grease for a long service life. End-of-stroke impact is absorbed by a fixed rubber bumper, not an adjustable cushion.
Airtac MBL Aluminum Alloy Mini Cylinder MBL40X120SCA Technical Specifications
| Model | Airtac MBL Aluminum Alloy Mini Cylinder MBL40X120SCA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 120 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 MBL40X120SCA
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 40 | 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 MBL40X120SCA Is Used
Textile Loom Heddle Frames
Drives the oscillating motion of heddle frames in narrow weaving looms, utilizing the CA pivot back cover to absorb the angular arcing load during 120 mm stroke reversals while delivering 628 N of push force.
Packaging Flap Folder
Folds corrugated cardboard flaps on continuous flow wrap-around carton sealers, where the compact aluminum body fits between conveyor rollers and the fixed rubber bumper withstands rapid end-of-stroke impacts.
Bottle Diverter Gate
Actuates a swing gate to sort PET bottles on a filling line conveyor, relying on the -S magnet and a DMSG solid-state sensor to confirm gate position before the high-speed filler indexes.
Is the Airtac MBL Aluminum Alloy Mini Cylinder MBL40X120SCA the Right Cylinder?
If your application requires less force, stepping down to the 32 mm bore yields 402 N of push force at 0.5 MPa; stepping up to the 50 mm bore provides 981 N. For faster cycle speeds or heavier moving masses at end-of-stroke, consider the MBLC variant, which replaces the fixed rubber bumper with an adjustable air cushion. If you need push-only or pull-only actuation, the MSBL and MTBL single-acting versions cover bores 20-40 mm.
This configuration uses a G1/4 port with PT thread form, an M12x1.25 rod-end thread, and a CA clevis back cover. Because the MBL40X120SCA operates on live air pressure, it does not hold its load when air is exhausted or the valve is centered—the rod will drift. An external rod lock or pilot-operated check valve is required for fail-safe position holding. At 120 mm stroke, the Ø16 mm rod handles side loads adequately, but for longer unsupported strokes, ensure an external guide is used to prevent rod-bearing bending.
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 MBL40X120SCA FAQ
At 0.5 MPa, the push force is 628 N and the pull force is 528 N. At 0.7 MPa, the push force increases to 880 N. The maximum theoretical force is 128 kgf at 1.0 MPa. Operating pressure ranges from 0.15 to 1.0 MPa.
No, the base MBL40X120SCA uses a fixed rubber bumper to soften end-of-stroke impacts and cannot be adjusted. If your application requires adjustable air cushioning to handle heavier loads or faster speeds, you should select the MBLC variant.
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