Do you know different parts needle bearing material?

Needle Bearing Material -Gcr15 bearing steel(Inner ring, outer ring, needle roller material)
  Bearing steel is the steel used to manufacture ball bearings, rollers, and bearing rings. Bearing steel has high and uniform hardness and wear resistance, as well as high elastic limit. The requirements for the uniformity of chemical composition, content and distribution of non-metallic inclusions, and distribution of carbides in bearing steel are very strict, making it one of the most demanding steel grades in all steel production. In 1976, the International Organization for Standardization (ISO) included some common bearing steel grades in international standards, dividing bearing steel into four categories: fully quenched bearing steel, surface hardened bearing steel, stainless bearing steel, and high-temperature bearing steel, totaling 17 steel grades.

GCr15 bearing steel is the most widely produced bearing steel in the world, with a carbon content of about 1% (Wc) and a chromium content of about 1.5% (WCr). Since its birth in 1901, its main components have remained largely unchanged for over 100 years. With the advancement of science and technology, research work continues and product quality continues to improve, accounting for over 80% of the world's total bearing steel production. So much so that bearing steel, unless otherwise specified, refers to GCr15.
Performance:
1) High contact fatigue strength,
2) After heat treatment, it should have high hardness or a hardness that meets the performance requirements for bearing use,
3) High wear resistance, low friction coefficient,
4) High elastic limit,
5) Good impact toughness and fracture toughness,
6) Good dimensional stability,
7) Good rust prevention performance,
8) Good cold and hot processing performance

Needle Bearing Material -Nylon/plastic(cage)

The selection of bearing cage is crucial in modern machinery that pursues efficiency, quietness, and long lifespan. Nylon cage, also known as plastic cage, is an ideal alternative to metal cage and has a series of remarkable advantages:
1. Lightweight design: The nylon cage is lightweight, which makes the bearing more flexible during operation
2. Silent performance: The noise level of nylon retainers is much lower than that of metal retainers, making it an ideal choice for pursuing a quiet environment, especially in electrical products that require noise reduction. Its performance is particularly outstanding.
3. Durability: Due to the reduction of friction between the metal cage and the steel ball, the nylon cage can effectively extend the service life of the bearing.

Needle Bearing material -rubber/metal(seal)

  The design of dust covers and sealing rings is equally important,
ZZ/2RS dust cover: reduces grease leakage to ensure normal bearing rotation; Prevent external foreign objects from entering to reduce wear and tear. It can isolate environmental noise and mechanical vibration, reducing the impact of noise on the working environment.

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