The AirTAC AirTAC MBL40X80SU Mini Cylinder | 40mm Bore 80mm Stroke is a genuine double-acting aluminum-barrel mini round cylinder with a Ø40mm bore and 80mm stroke, G1/4 air ports and a fixed rubber bumper. Its compact riveted body suits push, hold and clamp motion in tight machine spaces.
The AirTAC MBL40X80SU is a double-acting aluminum mini round cylinder engineered for tight machinery spaces where a larger ISO profile cylinder will not fit. At 40 mm bore and 80 mm stroke, it yields 628 N of push force and 528 N of pull force at 0.5 MPa, making it a solid choice for mid-range part ejection and clamping tasks. This specific SKU includes a built-in magnet (-S) for non-contact position detection using CMSG reed or DMSG/EMSG solid-state switches.
Unlike tie-rod bodies that can be unbolted and rebuilt, this actuator uses a riveted rolling-packed barrel where the front and rear covers are permanently crimped to the tube, ensuring a lightweight, compact footprint. The U suffix denotes a flat-end back cover for rigid rear mounting, while the carbon-steel piston rod features 20 µm hard-chrome plating to resist wear and corrosion. End-of-stroke impact is absorbed by a fixed rubber bumper rather than an adjustable cushion screw.
| Model | AirTAC MBL40X80SU Mini Cylinder | 40mm Bore 80mm Stroke |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 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.
| 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.
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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).
Drives small plastic parts out of tight mold cavities using 628 N of push force, fitting easily into constrained press tooling.
Secures printed circuit boards during routing with 528 N of pull force, using the -S magnet to trigger a DMSG sensor at the clamp position.
Folds minor flaps on packaging lines where the 80 mm stroke and rigid U flat-end mount provide precise, compact travel.
If your task needs less force, step down to the 32 mm bore (402 N push @0.5 MPa); if you require more power, step up to the 50 mm bore (981 N push @0.5 MPa). The 80 mm stroke is well below the side-load threshold, but always ensure linear movement to avoid bending the Ø16 mm rod. To swap this exact unit, match the 40 mm bore, 80 mm stroke, G1/4 port size, PT tapered thread, U flat-end cover, and the -S magnet.
Because the U cover is rigid, it does not pivot under angular stress. If your mechanism creates arcing loads, switch to the CA pivot back cover or an SDB knuckle. The fixed rubber bumper softens end-of-travel impact but provides no locking function; the rod will drift if air pressure is lost or the valve is centered. For position holding without live pressure, add an external rod lock or a pilot-operated check valve.
Quick checklist
At 0.5 MPa it provides 628 N push and 528 N pull. At 0.7 MPa push increases to 880 N, with a maximum theoretical force of 128 kgf at 1.0 MPa.
No, the base MBL uses a fixed rubber bumper to soften end-of-stroke impact. If your application requires an adjustable air cushion for heavier or faster moving loads, select the MBLC variant.
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