+86 379 64116028 strong.zeng@bearingly.com
About Us
Home > About Us


Luoyang Bobi Precision Co., Ltd. Located in Luoyang City, is a manufacturer in the bearing industries.  The scope of our products covers: Thin Section Bearings, Crossed Roller Bearings, Slewing Ring Bearings, and customer-special bearings.

“NERT” is our registered trademark for our products and we also offer OEM services for customers with their legal brand.

Since the founding of our company, we have been instructed by an Amercian engineer, who retired from a bearing company, we carried out the research and development jointly for the new bearing parts or bearing projects, which guarantees the delivery of high-quality bearings constantly.


Our plant area covers  31,690 square meters, in which several production cells are equipped.




The thin section bearing series of our company include Inch and metric-sized ball bearings, which are divided into seven open types and five sealed types with three constructions named Radial contact ( C type), Four point contact ( X type), and Angular contact (A type).

The open types series are numbered KAA, KA, KB, KC, KD, KF, KG

The sealed ones are numbered JHA, JA, JB, JU, JG

The inner diameters of these bearings range from 1 inch to 40 inches, and the cross-section of which ranges from 3/16″x 3/16″ to 1″x 1″.

The metric bearings include three sizes of cross sections, those are 8 x 8 mm, 13 x 13mm, and 20 x 20 mm.

We also produce 618 series and 619 series deep groove bearings.

The highly engineered crossed roller bearings we produced include the series, RA, RB, RE SX, RU, XV, CRBF, CRBH, CRBS, and CRBC.

For the slewing bearings we use the ball or cylindrical roller as the rolling media, and three options are offered to meet the different functions, those are no gear teeth, internal gear teeth, and external gear teeth.


We use chrome steel GCr15 (AISI52100) for the bearing rings in most cases, upon request, we also use stainless steel 440C or ceramic as the materials for the rings or balls.

As to the cages of thin section bearings, we normally use brass as the material, nylon or peek when required, we can produce peek strip cages to meet special demands.


We accept customer design thin section bearings and special bearings integrated with thin section bearings or crossed roller bearings.

Normally for the sample order, we have no minimum order restriction, we offer one piece of the sample, if we have them in stock, however, if the bearing type required is new and the quantity is lower than the economic costs, we shall reconsider them.



We have an assessment for the ISO9001-2015 certification every year, which makes the progressiveness of our quality management system.

The tolerance grade of thin section bearings P0 (ABEC-1) is commonly required in the market, however, our products can also reach P6 (ABEC-3), P5 (ABEC-5), and P4 (ABEC-7) for different requirements accordingly.





Online Service