Spherical Roller Bearing Guide Ring Lubricant Reservoir
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Solution Overview
Problem
Spherical roller bearings face challenges with friction and wear due to lubricant life being shorter than the bearing's life, requiring frequent and complex manual or mechanical relubrication processes.
Innovation Solution
A spherical roller bearing design featuring a guide ring with uneven lateral surfaces, including depressions and protrusions, acts as a lubricant reservoir, allowing the lubricant to diffuse and lubricate the bearing components without disassembly, and facilitates lubrication between the guide ring and rollers, reducing wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional lubrication methods are used with separate lubrication grooves and inlets, then lubrication can be provided to bearing components, but the device complexity increases and the relubrication process becomes time-consuming and labor-intensive
Solution Approach 1:
The guide ring is designed to perform multiple functions simultaneously: it guides the rollers, centers them, and serves as a lubricant reservoir. The lubricant is applied directly to the lateral surfaces of the guide ring that contact the rollers, eliminating the need for separate lubrication grooves and inlets. This integration simplifies the overall lubrication system while maintaining effective lubrication of bearing components.
2Reliability
If traditional relubrication methods are used requiring disassembly, then lubricant can be replenished, but the loss of time increases and productivity decreases
Solution Approach 1:
The guide ring lateral surfaces act as self-contained lubricant reservoirs that continuously supply lubricant to the roller contact surfaces. The lubricant is retained on the lateral surfaces through capillary action and surface tension, providing ongoing lubrication without requiring external lubrication systems or periodic disassembly for relubrication. The bearing essentially lubricates itself through the guide ring design.
3Reliability
If lubricant is applied traditionally, then lubrication is provided to bearing components, but the quantity of substance required increases due to leakage and inefficiency
Solution Approach 1:
The lubricant is applied locally and precisely to the specific contact surfaces where it is needed - the lateral surfaces of the guide ring that contact the rollers. The guide ring structure retains the lubricant at the exact location where lubrication is required, preventing leakage and ensuring efficient use of lubricant. This localized application improves lubrication coverage while reducing overall lubricant consumption.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design simplifies and speeds up the relubrication process, reduces wear on the guide ring, and maintains effective lubrication within the bearing, eliminating the need for traditional lubrication grooves and inlets.
Implementation Method 1
A portion of at least one of the two lateral surfaces corresponding to the inner guide ring section is provided with at least one depression and/or at least one protrusion wherein the cambered rollers of each set are distanced from the inner guide ring section and in contact with the outer guide ring section
Implementation Method 2
The stored lubricant, typically grease, then gradually diffuses out of the reservoir and lubricates various parts of the roller bearing
Data Source
AI summary
A spherical roller bearing having an axially extending center axis, an outer ring, an inner ring concentric with the outer ring, a guide ring concentric with the inner and outer rings, the guide ring has two lateral surfaces, one set of cambered rollers on either side of the guide ring and a cage structure arranged to retain the two sets of cambered rollers. The guide ring includes two circumferential guide ring sections, an inner guide ring section proximal to the inner ring and an outer guide ring section distal to the inner ring. A portion of at least one of the two lateral surfaces corresponding to the inner guide ring section is provided with at least one of at least one depression and at least one protrusion. The cambered rollers of each set are distanced from the inner guide ring section and in contact with the outer guide ring section.