FAG Current Insulated Single Row Tapered Roller Bearings
FAG Current Insulated Single Row Tapered Roller Bearings offer a critical solution for applications exposed to electrical currents. Stray currents can cause significant damage to conventional bearings. This includes pitting and fluting on raceways. These FAG insulated bearings are engineered with a special insulating layer. This layer effectively blocks harmful current flow.
Multiple Insulation Options for Electrical Environments
FAG Current Insulated Single Row Tapered Roller Bearings feature ceramic insulating layers available in several types, including J20AB, J20AA, and J20C. Each type offers different protective thickness and application characteristics. J20AB coatings provide standard protection in moderately humid environments. J20AA, being thicker and applied to the outer ring, offers greater resistance for high-frequency environments. J20C coatings are applied to the inner ring and provide enhanced insulation when the outer ring is rotating.
These coatings are applied using high-energy plasma spraying, ensuring strong adhesion, excellent wear resistance, and thermal conductivity. They act as a reliable barrier to stray current, helping to avoid bearing fluting, pitting, and lubricant degradation caused by electric discharge.
Importance of Insulation in FAG Tapered Roller Bearings
In many industrial applications, electric current passage through rolling bearings is a serious issue. This often occurs in traction motors, direct current motors, and alternating current motors. Without proper insulation, these currents can cause severe damage. This damage includes pitting on raceways and rolling elements. It also leads to lubricant degradation. Ultimately, this results in premature and unexpected failure of critical components.
The insulating layer in FAG Current Insulated Single Row Tapered Roller Bearings eliminates the current path between shaft and housing. This is particularly beneficial in systems driven by variable-frequency drives (VFDs), which often produce harmonic voltages capable of damaging standard bearings.
Standardized Design for Easy Integration
FAG Current Insulated Single Row Tapered Roller Bearings conform to DIN 616 and ISO 15 dimensional standards. This ensures full compatibility with standard housings and shaft sizes. The insulation layer is engineered not to alter the bearing’s external dimensions, which means it can be installed without modifying the existing design or fit.
These bearings combine electrical protection with mechanical precision. Their tapered structure handles high combined loads, making them ideal for applications where both radial and axial forces are present. The precision engineering of these bearings supports high-speed rotation and consistent performance under vibration and thermal stress.
FREQUENTLY ASKED QUESTIONS
What types of applications specifically benefit from FAG Current Insulated Single Row Tapered Roller Bearings?
These FAG bearings are highly beneficial in applications where induced voltage along the shaft can cause current passage. This includes various types of electric motors, generators, and rail vehicle wheelsets and traction motors. They are also critical in wind power generators to prevent damage from electrical discharge.
Are FAG Current Insulated Single Row Tapered Roller Bearings interchangeable with standard bearings?
Yes, they are. FAG Current Insulated Single Row Tapered Roller Bearings are manufactured to standard dimensions according to DIN 616 (ISO 15). This ensures they are fully interchangeable with standard tapered roller bearings. This makes it easy to upgrade existing systems to benefit from enhanced electrical protection without significant modifications.
Can FAG insulated bearings be used in damp environments?
Yes, certain FAG insulated bearings, such as those with the J20AB coating, are designed for use in damp environments. Thanks to a special sealing process, the J20AB coating maintains its insulating effect even when exposed to moisture. This ensures reliable protection and extended lifespan for your equipment in various operating conditions.
What are the main failure modes prevented by insulation?
Insulated bearings help prevent pitting, fluting, and grease degradation caused by electric discharge. These failure modes are common in VFD-driven and generator systems.