Spherical Plain Bearings

Spherical Plain Bearings

Core Features

  • Sliding Contact Surface: Unlike roller bearings, these consist of an inner ring with a convex outside diameter and an outer ring with a correspondingly concave inside surface, allowing for smooth multi-directional sliding.
  • High Oscillating Capacity: Specifically designed to accommodate oscillating, tilting, and rotating movements in relatively slow-speed applications.
  • Self-Alignment Excellence: Capable of managing significant misalignments and shaft deflections that would cause immediate failure in standard rolling-element bearings.
  • Heavy Static Load Support: The large contact area between the rings allows for the distribution of massive static loads and shock loads across the entire sliding surface.
  • Maintenance Options: Available in “Steel-on-Steel” versions requiring regular lubrication, or maintenance-free “Self-Lubricating” versions utilizing PTFE liners or composite materials.

At Kriloha Ltd., we understand that not every industrial challenge involves high-speed rotation; many involve “High-Force-Oscillation.” Our Spherical Plain Bearings are our engineered answer for “Heavy-Duty-Articulation” and “Extreme-Misalignment-Resilience.” As a premier provider of industrial components, Kriloha has developed a plain bearing series that balances mechanical invincibility with the operational agility required for heavy-duty linkages and hydraulic systems.

The engineering of our plain series is based on Surface-Area-Optimization. By utilizing precision-ground sliding interfaces, we ensure that the bearing acts as a “Durable-Pivot,” maintaining uniform load distribution even under the most punishing shock loads in construction and mining. At Kriloha, we verify that our steel-on-steel variants utilize specialized heat-treatment protocols to maximize wear resistance, while our maintenance-free series utilizes high-performance PTFE fabrics for “Friction-Free-Longevity.” This creates a “Rigid-Resilient” support system that secures your highest-value heavy machinery.

Manufacturing these bearings involves strict Spherical-Concentricity and Clearance Verification. We ensure that every component provides the consistent, chatter-free performance required for professional-grade earthmoving and structural engineering. Whether you are overhauling a hydraulic cylinder or designing a specialized industrial linkage, Kriloha Spherical Plain Bearings provide the mechanical durability your application demands. By choosing Kriloha Ltd., you are investing in a “Load-Resistant” technology that secures the integrity of your most powerful mechanical joints.

Bearing Table

SR. NO. BEARING NO. BOUNDARY DIMENSIONS (in mm) MASS
(~ Kg.)
d D B C
1 FE16-456 (SKF=365433) 42.000 62.000 25.000 20.000 0.255

Primary Use Cases

  • Hydraulic Cylinders: Found in the pivot ends (clevises) of cylinders for excavators and loaders to manage misalignment during extension.
  • Linkages and Suspensions: Used in heavy-duty vehicle suspension joints and steering linkages to allow for three-dimensional movement.
  • Bridges and Civil Engineering: Supporting structural components that must move or tilt due to thermal expansion or wind loads.
  • Mining and Earthmoving: Integrated into the heavy pivot points of dump truck beds and bucket attachments.
  • Aerospace Control Surfaces: Providing reliable pivots for flaps and actuators that experience high-frequency oscillation.

Frequently Asked Questions

How do Spherical Plain bearings differ from Spherical Roller bearings?

Spherical Roller bearings use rolling elements (rollers) for high-speed rotation, whereas Spherical Plain bearings use a sliding surface for slower, oscillating movements and much higher static loads.

When should I choose a “Maintenance-Free” version?

Maintenance-free (PTFE-lined) versions are ideal for applications where relubrication is difficult or impossible, or where the presence of grease could contaminate the environment.

Can these bearings handle axial loads?

While primarily designed for radial and tilting loads, spherical plain bearings can accommodate moderate axial loads. However, for high axial thrust, specialized thrust plain bearings should be used.

What is “Steel-on-Steel” best for?

Steel-on-Steel configurations are the standard for heavy shock loads and reversing loads, provided they are regularly lubricated to prevent metal-to-metal galling.

How much tilt can these bearings accommodate?

The “tilt angle” varies by series but generally ranges from 6° to 15°, allowing the shaft to deviate significantly from the housing centerline without loss of function.

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