What is the fine-grained topic of the following text: Pioneer Machinery Bearing 23132CE4 NSK realized this substantial improvement in performance by optimizing the internal geometry and surface finish of all contact surfaces, combining the extremely clean and homogenous steel with a unique heat treatment, improving the cage, roller profile and the geometry of the raceways. Only return the topic.
Improvement of Pioneer Machinery Bearing 23132CE4 NSK Performance