The AirTAC AirTAC MBL63X125U Mini Cylinder | 63mm Bore 125mm Stroke is a genuine double-acting aluminum-barrel mini round cylinder with a Ø63mm bore and 125mm 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 MBL63X125U is a double-acting aluminum mini round cylinder engineered to deliver substantial thrust in tight machine spaces. Operating at 0.5 MPa, it provides 1558 N of push force and 1457 N of pull force, scaling up to a maximum theoretical output of 318 kgf at 1.0 MPa. The 125 mm stroke makes it highly suitable for moving heavier jigs or actuating substantial clamps within compact assembly machinery.
Unlike tie-rod ISO cylinders, this unit features a riveted rolling-packed aluminum barrel where the covers are crimped directly to the tube, ensuring a lightweight but non-rebuildable body. Internal longevity is handled by a heterogeneous two-way piston seal that retains grease, while the Ø16 mm carbon steel rod features 20 µm hard-chrome plating to resist wear and corrosion. This specific U variant uses a rigid flat-end back cover for fixed mounting. Note that because this SKU lacks the -S suffix, it cannot accept a CMSG, DMSG, or EMSG position sensor switch.
| Model | AirTAC MBL63X125U Mini Cylinder | 63mm Bore 125mm Stroke |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø63 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M14×1.5 |
| 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 | 1559 N | 1458 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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. |
|---|---|
| 63 | 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).
Provides the 1558 N push force required to knock out dense plastic injection molded parts from the tool cavity within a confined press envelope.
Utilizes the 125 mm stroke to drive robust machining fixtures, securing heavy steel blocks against cutting forces during automated CNC milling cycles.
Actuates a heavy-duty diverter mechanism on a packaging conveyor, using the rigid U flat-end back cover to firmly mount the cylinder and handle high lateral stopping loads.
This 63 mm bore is the largest standard size in the MBL series, so if you need less force, the next step down is the 50 mm bore, which yields 981 N push at 0.5 MPa. Because this is the top of the range, there is no larger MBL option for higher thrust; you would instead step up to an ISO 15552 profile cylinder like the AirTAC SAI line. The fixed rubber bumper on this base MBL softens end-of-stroke impact, but if your 125 mm stroke moves a heavy load rapidly and requires deceleration, select the MBLC variant for its adjustable air cushion. Keep in mind that a plain MBL does not hold its position or load when air pressure is lost or exhausted—the rod will drift. If you need to maintain vertical position without live pressure, install an external rod lock or a pilot-operated check valve. The G1/4 port and PT thread form provide the necessary airflow for this power class.
Quick checklist
At 0.5 MPa, the push force is 1558 N and the pull force is 1457 N. At 0.7 MPa, the push force reaches 2181 N. The maximum theoretical force is 318 kgf when operated at the 1.0 MPa pressure limit.
The base MBL uses a fixed rubber bumper to soften end-stop impact; it is not an adjustable air cushion (you would need the MBLC variant for that). Additionally, this specific SKU lacks the -S magnet suffix, so it cannot accept a CMSG, DMSG, or EMSG sensor switch for position detection.
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