The AirTAC AirTAC MBL50X125U Mini Cylinder | 50mm Bore 125mm is a genuine double-acting aluminum-barrel mini round cylinder with a Ø50mm 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 MBL50X125U is a double-acting aluminum mini round cylinder engineered for compact machinery requiring substantial mid-range force. Delivering a push thrust of 981 N at 0.5 MPa (1374 N at 0.7 MPa) over a 125 mm stroke, it bridges the gap between lightweight handling and heavy clamping. The U suffix denotes a rigid flat-end rear cover, providing a stable fixed mounting footprint for straight-line actuation tasks.
Unlike tie-rod bodies that unbolt for maintenance, this cylinder utilizes a riveted rolling-packed barrel where the covers are crimped permanently to the tube, optimizing space and minimizing weight. The carbon-steel piston rod features a 20 µm hard-chrome plating to resist wear and corrosion, paired with a heterogeneous two-way piston seal that retains grease for an extended service life. Note that this specific SKU lacks the -S magnet suffix, meaning it cannot accommodate CMSG, DMSG, or EMSG position sensors.
| Model | AirTAC MBL50X125U Mini Cylinder | 50mm Bore 125mm |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø50 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 | 982 N | 881 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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. |
|---|---|
| 50 | 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).
Secures printed circuit board panels during routing operations, using the 981 N push force to prevent substrate vibration without occupying excessive machine footprint.
Drives a mechanical arm to fold minor flaps on packaging lines, where the 125 mm stroke provides the exact travel needed to clear passing boxes.
Actuates a routing gate on a conveyor system to redirect heavy pallets, relying on the rigid U flat-end rear cover to maintain alignment under lateral impact.
Selecting the MBL50X125U is ideal when your application demands approximately 981 N of push force at 0.5 MPa within a tight envelope. If you need less force, stepping down to the 40 mm bore yields 628 N push, while moving up to the 63 mm bore provides 1558 N for heavier payloads. The G1/4 port size matches the 50 mm bore's air flow requirements efficiently. Because this is a base MBL model with a fixed rubber bumper, it is not designed for adjustable end-of-stroke deceleration; choose the MBLC variant if your 125 mm stroke carries a heavy load requiring tuned air cushioning.
Keep in mind that a plain double-acting cylinder does not hold its position if air pressure is lost or the valve is centered; the rod will drift, so an external pilot-operated check valve is required for fail-safe load holding. Furthermore, because this SKU lacks the -S suffix, it cannot support electronic DMSG/EMSG or reed CMSG sensor switches. If position feedback is necessary for your 125 mm travel, specify an MBL50X125S model instead.
Quick checklist
At 0.5 MPa, the MBL50X125U delivers 981 N push and 881 N pull force. At 0.7 MPa, the push force increases to 1374 N, with a theoretical maximum of 200 kgf at 1.0 MPa. The operational speed ranges from 30-800 mm/s.
No, this base MBL model uses a fixed rubber bumper to soften end-of-stroke impact and cannot be adjusted; for adjustable air cushioning, you need the MBLC variant. Additionally, because this SKU lacks the -S magnet suffix, it cannot support CMSG, DMSG, or EMSG position sensors.
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