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MR12 Series Bearing Steel Bearings

As a relatively large deep-groove ball bearing within the metric MR series, this product utilizes high-purity bearing steel as its core material. Precision processing of the rolling elements and raceways enables effective distribution of contact stress, thereby significantly reducing material damage caused by stress concentration.

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Bearing Features

The series is designed to balance high precision with ease of maintenance. Its deep groove ball structure ensures a stable rotational path even at high speeds. Depending on the operating environment, the bearing can be configured with various sealing options—such as metal dust shields or rubber seals—to prevent the ingress of external contaminants while retaining lubricant. This design guarantees reliable operation in dusty or humid conditions.

Technical Specifications

Bearing Reference Boundary Diameters Basic Dynamic Basic Static Limiting Speeds
d D Df/Df1 B Bf B1 Bf1 rsmin
Open Shield mm mm mm mm mm mm mm mm Cr(kN) Cor(kN) Grease  Oil
MR126 ZZ 6 12 - 3 - 4 - 0.2 0.715 0.294 3.7 4.1
MR128 ZZ 8 12 - 2.5 - 3.5 - 0.15 0.539 0.274 3.3 3.7

About Us

Jiangsu Yinghong Transmission Technology Co., Ltd. (YHU) was established in 2024 through the joint investment of Dongguan Yinghong, Linqing Boshuo, and Yancheng Jiwei. As a group-based enterprise specializing in the research, development, manufacturing, and service of transmission products, we leverage extensive industry experience and strong technical expertise to provide reliable, energy-efficient transmission solutions for customers worldwide.

The company covers more than 70 mu of land and operates nearly 10,000 square meters of manufacturing facilities. As a professional manufacturer of precision special bearings in China, we have introduced advanced Japanese precision manufacturing technology and equipped our facility with automated production lines and high-precision testing equipment. A comprehensive quality management system ensures consistent product quality and reliable performance.

As a National High-Tech Enterprise, Yinghong holds multiple invention and utility model patents and has obtained internationally recognized certifications including IATF 16949, RoHS, CE, and SGS. These certifications enable us to meet diverse customer requirements and provide effective solutions for demanding applications and complex technical challenges.

We specialize in the production of high-precision deep groove ball bearings and custom non-standard bearings under our registered trademark, “YHU”. Our main products include bearing steel bearings, stainless steel bearings, ceramic bearings, and plastic bearings.

YHU bearings are designed to deliver low noise, low vibration, low friction, high precision, great sealing performance, and high-speed operation. They also offer self-lubrication, corrosion resistance, rust resistance, acid and alkali resistance, chemical resistance, electrical insulation, non-magnetic properties, high-temperature resistance, low-temperature adaptability, and long service life, making them suitable for demanding operating environments.

Our bearings and bearing assemblies are widely used in electric motors, power tools, pneumatic tools, robotics, drones, household appliances, precision instruments, semiconductor equipment, medical devices, marine equipment, aerospace applications, financial equipment, textile machinery, fishing equipment, and a wide range of specialized industrial equipment.

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