Is customization available for special specifications?

Yes, special specifications can be manufactured after negotiation with the manufacturer.

What is the lead time for orders?

The average lead time is one month for both peak season and off-season periods.

Zys High Performance Silicon Nitride Ceramic Balls Si3n4 7.938mm for Ball Bearing

Name: Zys High Performance Silicon Nitride Ceramic Balls Si3n4 7.938mm for Ball Bearing
Brand: Luoyang Bearing Research Institute Co., Ltd.
SKU: 931155725

Henan, ChinaLuoyang Bearing Research Institute Co., Ltd.

US$0.10

1-99 Pieces

US$0.09

100+ Pieces

Sample price:US$0.10/piece.Request sample

Product profile

Customization

Available

Customized

Non-Customized

Certification

CE, ISO

Model NO.

7.938mm

Standard Parts

Yes

Universal

Yes

Type

Bearing Ball

Material

Galvanized Steel, Plastic, Brass Steel and Others

Hardness

58-65 HRC Bearing Ball

Shape

Polish Round Bearing Steel Ball

Grade

G10-G1000 Chrome Steel Ball

Application

Solid Bicycle, Motor, Machinery, Tools

Product Name

High-Carbon Stainless Chrome Steel Ball

Structure

Solid Chrome Steel Ball

Size Range

0.5mm-180mm Chrome Steel Ball

Transport Package

Cases and Pallets or as Customer's Requirment

Specification

high quality

Trademark

ZYS

Origin

Luoyang, Henan, China

Production Capacity

400000/Month

Key features

High Performance Material: Si3N4 ceramic offers high temp resistance, corrosion resistance, insulation, and low density.

High Precision Grade: Manufactured to G5 precision grade with Class I material standards for superior quality.

Advanced Manufacturing: Produced via spray-drying, cold isotatic pressing, and GPS-HIP combined sintering processes.

Excellent Mechanical Properties: Features high bending strength (900 MPa), high hardness (1580 HV), and low friction.

Wide Application Range: Suitable for high-speed power equipment, aerospace, aircraft instruments, and vacuum equipment.

Trusted Manufacturer: ZYS is a Forbes Top 200 promising company with ISO certification and state-level testing.

Company profile

Luoyang Bearing Research Institute Co., Ltd.

Henan, China

CertifiedBusiness Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 1995-09-02 CertifiedNearest Port: Shanghai PortAverage Response Time: ≤4.19h CertifiedTerms of Payment: LC, T/T

AI-Powered supplier vetting

SummaryLuoyang Bearing Research Institute Co., Ltd. is a China-based manufacturer established in 1993, with 708 employees and operations in Henan. Its stated business covers precision, special, large-size, slewing, wind-turbine, and other bearing products, as well as spindles, testing instruments, manufacturing equipment, and related materials. The supplier reports export activity since 1995, with exports representing 51%–70% of total sales. It has ISO9001:2008 and other certifications, more than 10 production lines, 26 years of R&D engineer experience, 50 quality-control staff, and stated annual production of 10 million angular-contact ball-bearing sets. The evidence supports strong manufacturing breadth, R&D specialization, and international operating experience. However, the provided information does not sufficiently establish after-sales service capability, financial credibility, customization performance, or specific customer cases.

Supplier typeThe supplier is explicitly identified as a manufacturer and operates as a limited company in Henan, China. Its stated business includes research, development, production, and sales of bearing products and related equipment.

CertificationsThe supplier reports holding an ISO9001:2008 certificate and other certifications. This provides explicit evidence of management-system certification, although the details and current validity of the additional certifications are not specified.

R&D capabilityThe supplier is described as a high-tech enterprise focused on high-end, precise, advanced, unique, and non-standard bearings. It conducts R&D on precision and special bearings, spindles, testing equipment, and materials, with 26 years of R&D engineer experience and involvement in industry standards, supporting a strong innovation profile.

Production capacityThe supplier has 708 employees, more than 10 production lines, and a broad product portfolio spanning special, precision, medium/large, sliding, and bearing-related products. It also reports annual production of 10 million angular-contact ball-bearing sets, providing explicit evidence of substantial production capability.

Customization capabilityThe supplier explicitly develops high-end, non-standard bearing products and serves key units across various national economic fields. This indicates capability to address specialized product requirements, but the slices do not provide specific examples of customer-customized projects or verified customization performance.

Product Q&A

Q:What are the key features of Si3N4 ceramic balls?

They possess high temperature resistance, corrosion resistance, insulation, non-magnetism, high strength, low density, low friction, and high rigidity.

Q:What is the precision grade of these ceramic balls?

The precision grade is G5, and the materials class is I, ensuring high performance and accuracy.

Q:What manufacturing processes are used?

They are manufactured by spray-drying, near-net-shape, cold isotatic pressing, GPS-HIP combined sintering, and compounded abrasive lapping.

Q:What are the mechanical properties of Class I Si3N4?

Class I Si3N4 has a bending strength of 900 MPa, crushing load ratio of 35%, hardness of 1580 HV, and fracture toughness of 6.0 MPa.m1/2.

Q:What are the common applications for G5 grade balls?

Common applications include high-speed power equipment, space mechanisms, aircraft instruments, liquid oxygen pumps, and aerospace equipment.