Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC50X400U
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC50X400U is a genuine double-acting aluminum-barrel mini round cylinder with a Ø50mm bore and 400mm 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
- Stroke400 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 MBLC50X400U
The AirTAC MBLC50X400U is a double-acting, 50 mm bore mini cylinder with a 400 mm stroke, engineered for compact spaces requiring substantial thrust. It generates 981 N of push force and 881 N of pull force at 0.5 MPa. A defining feature is the screw-adjustable pneumatic cushion at both ends, which decelerates the piston smoothly near stroke limits to absorb kinetic energy on long, heavy moves. This U variant features a rigid flat-end back cover for direct mounting.
Unlike fixed-bumper designs, this model allows you to tune the end-of-stroke deceleration to match your specific load and velocity, cutting impact shock and vibration. The body utilizes a riveted rolling-packed aluminum barrel for a lightweight yet robust profile, while the Ø16 mm carbon-steel rod features 20 µm hard-chrome plating to resist wear. A heterogeneous two-way grease-retaining piston seal maintains lubrication over high cycle counts.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC50X400U Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC50X400U |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø50 mm |
| Stroke | 400 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 MBLC50X400U
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 50 | Bore size in mm. |
| ×400 | 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 MBLC50X400U Is Used
CNC Lathe Servo Indexer
Drives a heavy multi-tool turret indexer along a 400 mm travel, relying on the tuned air cushion to halt the 981 N thrust smoothly without shocking the spindle bearings.
Pallet Transfer Reject
Pushes loaded 50 mm bore pallets sideways off a high-speed line, using the adjustable needle to brake the 400 mm stroke gently and prevent payload tipping.
Vertical Sheet Stacker
Lifts steel blanks from a magazine, where the 881 N pull force handles the retraction and the cushion protects the top cover from impact during rapid upward cycles.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC50X400U the Right Cylinder?
Stepping down from this 50 mm bore (981 N push @0.5 MPa), the 40 mm bore provides 628 N of push force for lighter payloads. Stepping up, the 63 mm bore yields 1558 N for heavier demands. Choose this MBLC cushioned version over the base MBL when moving substantial masses at high speeds or cycling frequently, where a fixed rubber bumper would deteriorate rapidly. Note that the air cushion only decelerates near the ends; it is not a lock, so the rod will drift if air is lost.
At 400 mm of stroke, the Ø16 mm rod is highly susceptible to bending under side loads. To prevent premature seal failure and rod damage, use an external guide rail, select a CA or SDB pivot mount to accommodate arcing loads, or switch to an MBLD double-rod cylinder. This U-coded SKU has a flat-end back cover for rigid inline attachment, uses a G1/4 port, and because it lacks the -S magnet code, it cannot accept a CMSG, DMSG, or EMSG position sensor.
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 MBLC50X400U FAQ
At 0.5 MPa, the 50 mm bore delivers 981 N push and 881 N pull. At 0.7 MPa, it provides 1374 N push. The maximum theoretical force is 200 kgf at 1.0 MPa.
A screw needle at each end restricts the exhaust air trapped in the cushion chamber, decelerating the piston smoothly before it hits the end cover. You tune it to match the load and speed, which is critical for a 400 mm stroke moving heavy mass, unlike a non-adjustable fixed rubber bumper.
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