New Ultra-High-Speed Large Bearing for Motors in Hybrid Vehicles

Product catalog summary

Product Overview
New ultra-high-speed large bearings have been developed for motors in hybrid vehicles, focusing on reducing friction and heat generation. Key optimizations include radial clearance, ball diameter, number of balls, and groove dimensions, with a significant reduction in the number of balls.

Technological Innovations

Reinforced PEEK Cage: Utilizes carbon fiber reinforced plastic to enhance durability under ultra-high-speed conditions.
Miniaturization: Achieved by reducing bearing width through offset grooves while maintaining cage strength.
Inner Ring Guide: A structure that guides the cage using the inner ring to control skidding damage and vibration.
Long Life and Dimensional Stabilization: Special heat treatment and dimensional stabilization technology improve bearing life by controlling age deterioration of radial clearance.

Bearing Specifications

Inner Diameter: Up to ø160
Outer Diameter: Up to ø190

Evaluation Results

Standard Product: Exhibited severe smearing, wear, and increased sound pressure under test conditions.
Developed Product: Showed no abnormalities, with sound pressure similar to a new product and no damage to the cage.

Test Conditions

Load: Unloaded (only imbalance load due to rotational load)
Outer Ring Rotation Speed: 10080 rpm
Inner Ring Rotation Speed: 4255 rpm
dmn: 2.6 million equivalent (converted to cage orbital speed)
Lubricant: ATF 0.35 L/min @ 90°C
Test Duration: 60 hours

Catalog excerpts

New Ultra-High-Speed Large Bearing for Motors in Hybrid Vehicles-1

PRODUCT INFORMATION New Ultra-High-Speed Large Bearing for Motors in Hybrid Vehicles

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New Ultra-High-Speed Large Bearing for Motors in Hybrid Vehicles-2

Product Features A technological breakthrough enabling ultra-high-speeds Miniaturization of bearing width (Narrow width + offset groove) › Bearing width is minimized by offset and by maintaining cage strength and the guide surface of the cage. Long life technology / Dimensional stabilizing technology Reinforced PEEK cage › The use of carbon fiber reinforced plastic (PEEK) dramatically improves cage durability under ultra high-speed conditions. The use of dimensional stabilization technology and special heat treatment (HTF) controls age deterioration of the radial clearance and improves bearing...

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New Ultra-High-Speed Large Bearing for Motors in Hybrid Vehicles-3

Evaluation Results Test condition › Load: unloaded (only imbalance load due to rotational load) Rotation speed of outer ring: 10080 rpm › Rotation speed of inner ring: 4255 rpm › dmn 2.6 million equivalent (converted to cage orbital speed) › Lubricant: ATF 0.35 L/min @ 90 C › Test duration: 60 hours Test result Standard product Developed product Severe smearing on ball surface, inner and outer ring raceways, cage and wear Significantly increased sound pressure No abnormality Bearing sound pressure same as new product. Rough surface, wear Smearing, wear Skidding, wear No damage to cage and in...

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