It 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 a 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 almost demanding steel grades in all steel production.

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View MoreJiangsu Yinghong Transmission Technology Co., Ltd. is a Bearing Steel Bearings manufacturer producing high-precision deep groove ball bearings under the registered YHU brand. Our production base in Jiangsu, China operates automated bearing lines, Japanese precision manufacturing technology, and a closed-loop quality system. We supply standard series, modified configurations, and fully custom non-standard bearings for equipment builders, distributors, and industrial end users.
The Bearing Steel Bearings range is our core product family: we machine bearing rings, select balls, and assemble radial deep groove bearings from high-carbon chromium bearing steel. These bearings are built for low noise, low vibration, controlled friction, and repeatable running accuracy across a wide range of industrial applications.
We organize this category into four families based on dimensional system, cross-section, and application logic. Each family shares the same bearing steel material and process control, but is configured to meet different installation and operating constraints.
Inch-dimensional radial bearings used in legacy inch-system equipment, power tools, small motors, and replacement applications. Families include R133, R144, R155, R168, R1810, R6, and R8.
67, 68, and 69 series bearings with reduced cross-sections for compact assemblies and limited axial space. F69 flanged variants provide simple axial location without additional hardware.
Metric miniature bearings MR10, MR11, and MR12 with small radial cross-sections for instrumentation, small drives, pulleys, and portable equipment.
68, 60, and 69 metric miniature series engineered for low-torque, high-speed operation in precision instruments, medical devices, small motors, and robotics.
| Series family | Configuration logic | Application fit |
|---|---|---|
| Inch R Series | Inch-dimensional bore and outside diameter combinations, radial single-row design | Inch-standard equipment, power tools, small electric motors, replacement and service parts |
| Thin-Section Series | Compact radial cross-section, reduced axial width, optional integral flange | Dental handpieces, small gearboxes, encoders, compact rotary assemblies |
| Metric MR Series | Metric miniature dimensions with low radial section height | Precision instruments, miniature motors, flow meters, lab equipment |
| Metric Miniature Series | 68, 60, and 69 metric series with balanced load capacity and speed | Robotics, drones, semiconductor equipment, household appliances, medical instruments |
Bearing steel is selected for high and uniform hardness, wear resistance, and a high elastic limit. The metallurgical requirements are demanding: chemical composition, non-metallic inclusions, and carbide distribution must be tightly controlled because these factors directly influence rolling contact fatigue life.
We process bearing steel rings and balls through controlled heat treatment, precision grinding, and assembly with strict dimensional and geometric control. Our automated production lines and high-precision testing equipment allow us to maintain consistent quality across batch production and to repeat results when scaling from prototype to mass delivery.
YHU bearing steel deep groove ball bearings are used in electric motors, power tools, pneumatic tools, robotics, drones, household appliances, precision instruments, semiconductor equipment, medical devices, marine equipment, aerospace systems, financial equipment, textile machinery, and fishing equipment. In each case, the bearing configuration is determined by the actual operating point: load, speed, temperature, lubrication, and required life.
Our engineers support bearing selection, structural design, and performance optimization. We treat the bearing as part of the rotating assembly, so we also consider shaft and housing fits, clearance, sealing, and the environmental conditions that affect grease performance and corrosion resistance.
As a National High-Tech Enterprise, Yinghong maintains a full-chain quality system that starts with incoming raw material and continues through production and final inspection. We have obtained IATF 16949, RoHS, CE, and SGS certifications, and we apply high-precision inspection equipment to verify dimensional accuracy, noise, vibration, sealing, and wear resistance before shipment.
For project orders, we confirm acceptance criteria at the quotation stage so that dimensional tolerances, running noise targets, and performance requirements are documented before mass production. Inspection results and material traceability can be included in the delivery package.
We provide custom development for all types of standard and non-standard bearing steel bearings. This includes bearing design and optimization, prototype production, mass delivery, and after-sales technical support. Customers can submit drawings, samples, or a failed bearing for failure analysis; our team then proposes the appropriate material, heat treatment, clearance, cage, and sealing configuration.
The same engineering approach is used for non-standard bore sizes, modified widths, special chamfers, flange additions, and application-specific performance targets. We combine group-level manufacturing resources with responsive service for OEM and ODM projects.
We manufacture Bearing Steel Bearings from high-carbon chromium bearing steel selected for high hardness, wear resistance, and fatigue strength. The steel is processed under controlled heat treatment and finishing conditions to support the noise, life, and precision requirements of each application.
Yes. We match the sealing and shielding configuration to the operating environment. Open bearings, metal-shielded versions, and contact or non-contact seals can be specified depending on speed, contamination, and lubrication retention requirements.
We regularly develop non-standard bearing steel bearings with modified dimensions, tolerances, materials, cages, seals, and performance characteristics. The process starts from a drawing, sample, or failure analysis and moves through prototype production before mass delivery.
For a precise proposal we need the bearing reference or drawing, envelope dimensions, load and speed, operating temperature, noise or precision requirements, sealing and lubrication preference, and estimated annual quantity. With these inputs we can configure the correct bearing steel bearing and manufacturing route.
Our quality system is certified to IATF 16949, RoHS, CE, and SGS. Production is supported by high-precision inspection equipment, and project-specific inspection reports and material traceability documentation can be prepared as part of the supply agreement.