This item used by Mechanical buffalo (MB) model h/pivot for
control the hydraulic.
 
Hydraulic Tensioner Bearings
Hydraulic tensioner bearings are components often found in automotive timing belt or clutch systems. They maintain proper tension in belts or chains and facilitate smooth clutch operation by using hydraulic pressure to adjust tension dynamically. For example:
 
Function: In vehicles like the Alfa Romeo GTV/6, Milano, or 164 (1981-1993), a hydraulic tensioner bearing ensures proper timing belt tension. It can also act as a hydraulic throwout bearing in clutch systems, replacing traditional mechanical components like clutch forks and pivot balls.
Advantages:
Fewer Moving Parts: Reduces wear compared to mechanical systems, as there’s no clutch fork or pivot ball.
Smoother Operation: Provides consistent pressure for easier engagement and reduced drivetrain shock.
Adjustability: Fully adjustable for compatibility with aftermarket clutches and transmissions (e.g., Muncie, Saginaw, Tremec).
 
Applications: Used in performance cars for clutch systems or timing belt tensioning. They require precise installation, and in some cases, the bearing’s center section may need to be pressed out and replaced for compatibility (e.g., 12-valve vs. 24-valve engines).
Maintenance: These bearings are durable but may require periodic checks of hydraulic fluid quality and pressure to ensure optimal performance.
 
Hydraulic Bearings Under Tensional Loads
 
If you meant hydraulic bearings (hydrostatic or hydrodynamic) that manage tensional or axial loads, these are fluid-based bearings used in high-performance machinery to support loads with minimal friction. Here’s a breakdown:
 
Hydrodynamic Bearings:
Mechanism: Rely on the relative motion of surfaces to create a pressurized fluid film (usually oil) that separates the bearing and shaft, reducing friction and wear.
Tensional (Axial) Load Support: Thrust bearings handle axial loads (parallel to the shaft). They can be fixed-geometry or tilt-pad designs, with tilt-pad bearings accommodating varying conditions for stability.
Applications: Common in turbines, compressors, gearboxes, and pumps in industries like power generation, oil, and gas.
Limitations: High friction at low speeds or during startups/stops unless supplemented by an external pump or secondary bearing.
 
Hydrostatic Bearings:
Mechanism: Use an external pump to supply pressurized fluid (oil, water, or air) to maintain a separating film, independent of shaft motion. This ensures no contact even at zero speed, ideal for high-precision or heavy-load applications.
Tensional Load Handling: Multi-pad or multi-recess designs with flow control valves maintain constant film thickness under dynamic or eccentric loads, offering high stiffness and damping.
Applications: Used in machine tool spindles, large-scale turntables, and telescopes (e.g., Giant Magellan Telescope with 24 axial hydrostatic pads).
Advantages: Near-zero wear, low friction, and high precision due to non-contact operation.
Disadvantages: Higher energy costs due to external pumps and complex hydraulic circuits.
 
Self-Lubricating Hydraulic Bearings:
Features: Incorporate materials like PTFE or bronze for low friction and wear resistance without frequent lubrication. These are ideal for hydraulic cylinders, pumps, or heavy equipment under tensional or radial loads.
Benefits: Maintenance-free, environmentally friendly, and noise-reducing