Precision Manufacturing in Luoyang
Where engineering becomes production reality
LZK combines precision machining, raceway grinding, superfinishing, controlled assembly and advanced metrology to manufacture large, thin-wall and high-accuracy bearings for demanding industrial equipment.
Based at No. 5 Duyu Street, Luolong District, Luoyang, Henan, China, LZK develops and manufactures high-precision, high-speed, high-performance and high-reliability bearings for critical industrial applications.
Company Evolution
Engineering heritage shaped by industrial practice
The company has evolved through research-institute origins, strategic investment and corporate transformation while retaining its focus on precision bearing engineering.
LZK was founded in January 2006 as Zhongji Luoyang Bearing Technology Co., Ltd. It was originally a controlled subsidiary of SIPPR Engineering Group Co., Ltd., formerly the Tenth Design and Research Institute of the Ministry of Machinery Industry.
Hanking Group completed a strategic acquisition of the company in September 2010. In August 2015, the business completed its joint-stock transformation and adopted the name Zhongji Luoyang Precision Equipment Technology Co., Ltd.
Manufacturing Capability
Built for large, precision and thin-wall bearings
Seven major bearing families cover products from compact components with a 25 mm bore to rolling bearings with an outside diameter of 3,200 mm. LZK has particular process expertise in precision thin-wall products with bore diameters from 80 mm to 1,200 mm.
Production Equipment
A connected precision manufacturing route
Equipment, process planning and operator control work together from initial ring preparation to final assembly. Photographs below follow that route from ring preparation through final packaging.
CNC Precision Turning
Controlled blank and machining allowances establish a stable dimensional foundation for subsequent heat treatment, grinding and finishing operations.
High-Precision Raceway Grinding
High-accuracy grinding equipment controls ring geometry, raceway form and dimensional relationships for low runout and dependable rotational performance.
Raceway Superfinishing
Superfinishing improves contact surfaces and supports stable friction, lower vibration and reliable service life in precision rotating systems.
Thin-Wall Ring Processing
Dedicated process methods manage deformation and geometric stability across large, slender rings, particularly within the 80–1,200 mm core bore range.
Precision Assembly & Matching
Rolling elements, cages, clearances and preload are matched around the bearing design and its real requirements for rigidity, torque and accuracy.
Cleaning, Preservation & Packaging
Final preparation protects product cleanliness, corrosion resistance and dimensional integrity through storage, export packing and long-distance delivery.
Production Strength
Manufacturing capability is a complete system
Precision does not come from a single machine. It is created through connected control of materials, process stability, geometry, assembly and verification.
Application-led planning
Manufacturing routes are defined around bearing geometry, accuracy class and operating conditions.
Controlled critical processes
Machining allowances, heat-treatment effects and precision finishing are considered as one route.
Repeatable batch production
Process standards support consistent dimensions, geometry, clearance, preload and rotational quality.
Inspection-backed release
Measurement records connect production decisions with finished-product acceptance.
Precision Verification
Measurement capability supporting P2-class precision
LZK is equipped with advanced grinding, superfinishing and inspection systems. Coordinate measuring machines, roundness instruments, contour measuring systems, video measuring machines and universal length measuring equipment support geometry, form, surface and dimensional verification.
Inspection is integrated with manufacturing rather than treated as a final administrative step. Data from each critical stage helps confirm that the finished bearing meets its intended performance.
Products & Applications
Precision bearings for specialised industries
Large, precision and thin-wall bearings form the core product direction, supported by customised development and remanufacturing for special applications.
From compact bearings to large rotating structures
The portfolio supports CT systems, industrial and mobile robots, medical equipment, semiconductor manufacturing, major-equipment gearboxes, precision machine tools, radar measurement systems and other specialised machinery.
Research & Development
From engineering research to stable production
LZK has maintained National High-Tech Enterprise status since its establishment and places independent innovation at the centre of new-product development. The company owns nearly one hundred national patents, including dozens of invention patents.
More than 600 products have been independently developed. The company has completed national innovation-fund projects, participated in the National 863 Program and major Henan science and technology projects, and delivered multiple provincial, municipal and high-tech-zone research programmes.
Certificates & Recognitions
Six records of engineering capability
Enterprise qualifications, research platforms, production capability and quality management, recorded on the certificates themselves.
National High-Tech Enterprise
Recognition of sustained research, technological development and innovation capability.
Luoyang Large Precision Thin-Wall Bearing Engineering Technology Research Center
A municipal platform focused on large, precision and thin-wall bearing engineering.
Luoyang Bearing Industry Development Platform Pilot Production Base
A bridge between technical development, process validation and production implementation.
Innovation Fund Recipient
Key precision bearing technology research project successfully passed final acceptance.
Quality Management System Certification
Recognition of standardized quality management processes and commitment to consistent product quality.
Luoyang Science & Technology Progress Award — Second Prize
Recognition of applied innovation in bearings for major industrial gearboxes.
Manufacturing Consultation
Bring your bearing requirement to the production floor
Share a model, drawing, sample or operating condition. LZK can connect application analysis, custom development, precision manufacturing and inspection in one engineering route.