Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC50X125U
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC50X125U 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.
- BoreØ50 mm
- Stroke125 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM14×1.5
- CushionRubber bumper (MBLC variant: adjustable air cushion)
About the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC50X125U
The AirTAC MBLC50X125U is a double-acting, compact aluminum mini cylinder engineered with a screw-adjustable pneumatic cushion at both stroke ends. Generating 981 N of push force and 881 N of pull force at 0.5 MPa, this 50 mm bore unit is tailored for moderate-load cycles requiring smooth deceleration. The 125 mm stroke suits intermediate travel distances in packaging or assembly machinery. Unlike the base MBL series, which relies on a fixed rubber bumper, the MBLC variant allows you to tune the end-of-stroke deceleration to match your specific load and speed, effectively minimizing impact shock, vibration, and noise.
This specific configuration features a rigid U-type flat-end back cover for straightforward rigid mounting. It lacks the -S suffix, meaning it is not equipped with a built-in magnet and cannot be paired with CMSG, DMSG, or EMSG sensor switches for position detection. The cylinder utilizes a riveted, rolling-packed aluminum barrel for a lightweight, space-saving profile rather than a bulky rebuildable tie-rod design. Inside, a heterogeneous two-way grease-retaining piston seal works alongside a 20 µm hard-chrome plated carbon-steel rod to ensure low-friction, long-life operation even at speeds up to 800 mm/s.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC50X125U Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC50X125U |
|---|---|
| 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.
Theoretical Output Force (Ø50mm)
| 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.
Model Code: Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC50X125U
| 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).
Where the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC50X125U Is Used
Case Carton Sealing
Drives the folding and sealing head on a continuous packaging line, using the 125 mm stroke and 981 N push force to cleanly close cardboard cartons while the adjustable cushion prevents end-stop jarring at high cycle rates.
PCB Router Gating
Actuates a routing gate on a printed circuit board conveyor, where the compact riveted aluminum barrel fits within tight machine guarding and the smooth pneumatic deceleration protects delicate board transport belts.
Pallet Push-off
Pushes empty pallets from a low-profile transfer station, utilizing the 881 N pull force to retract the rod quickly without slamming the internal end covers, reducing maintenance downtime in high-throughput logistics.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC50X125U the Right Cylinder?
Selecting the MBLC50X125U makes sense when your application demands 981 N of thrust at 0.5 MPa (1374 N at 0.7 MPa) and the move speed is high enough that a fixed rubber bumper would wear prematurely or cause damaging shock loads. If your payload is lighter or space is tighter, stepping down to the 40 mm bore yields 628 N of push force at 0.5 MPa. Conversely, if you are moving heavier jigs or need more thrust, stepping up to the 63 mm bore provides 1558 N of push force at 0.5 MPa. Because this is a 125 mm stroke—well under the 300 mm threshold where rod bending becomes a primary concern—side-load management is less critical here than on longer units, though the 16 mm rod still has limited tolerance for off-center loads.
This SKU features a PT (tapered) port thread, a G1/4 port size, an M14x1.5 rod-end thread, and a rigid U flat-end back cover. It does not include a built-in magnet, so external mechanical stops or limit switches are required if you need end-position confirmation. Remember that the adjustable air cushion only decelerates the piston near the stroke ends; it is not a load lock or brake. If the air supply is lost or the directional valve centers, the rod will drift, so an external pilot-operated check valve or rod lock is necessary for fail-safe holding.
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 MBLC Aluminum Alloy Mini Air Cylinder MBLC50X125U FAQ
The MBLC50X125U has a 50 mm bore and a 16 mm rod with an M14x1.5 rod-end thread. It features a G1/4 port with a PT (tapered) thread form. At 0.5 MPa, it provides 981 N of push force and 881 N of pull force. At 0.7 MPa, the push force is 1374 N. The maximum theoretical force is 200 kgf at 1.0 MPa.
Because this specific SKU lacks the -S suffix, it has no built-in magnet and cannot accept AirTAC CMSG, DMSG, or EMSG sensor switches; you must use external limit switches for position detection. The adjustable air cushion at both ends is tuned via a screw needle; it traps a small amount of exhaust air to decelerate the piston smoothly near the stroke ends, which is critical for reducing impact and noise on fast cycles compared to a fixed rubber bumper.
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