Deep Groove Ball Bearings
Low friction, high speed and dependable support for radial and combined loads.
- 6000 Series
- 6200 Series
- 6300 Series
- 6800 Series
- 6900 Series
Bearing Range
The bearings we engineer.
From standard precision products to large non-standard solutions, our portfolio supports demanding motion systems across medical, machine-tool, robotics, semiconductor and heavy-industry applications.
View all bearing categories →
Angular Contact Ball Bearings
High rigidity, controlled axial positioning and accurate high-speed rotation.
- 70 Series
- 72 Series
- 73 Series
- Four Point Contact
Cylindrical Roller Bearings
High radial load capacity with precise and stable running performance.
- NU Series
- NJ Series
- NUP Series
- N Series
- NN Series
Tapered Roller Bearings
Strong, stable support for simultaneous radial and axial loading.
- Metric Series
- Inch Series
- Single Row
- Double Row
Crossed Roller Bearings
Compact, rigid and highly accurate support for complex multi-directional loads.
- RB Series
- RE Series
- RU Series
- CRBH Series
- SX Series
Thin-Section Bearings
Reduced weight and installation space without sacrificing rotational accuracy.
- C Type Series
- A Type Series
- X Type Series
- Four Point Contact
Four-Point Contact Bearings
Compact slewing support with combined-load capacity and installation flexibility.
- QJ Series
- QJF Series
- External Gear
- Internal Gear
Thrust Bearings
Purpose-built axial support with reliable load transfer and positioning stability.
- Ball Thrust Series
- Roller Thrust Series
- Single Direction
- Double Direction
Custom & Special Bearings
Application-specific structures developed around accuracy, load and installation limits.
- Equivalent Replacement
- Non-Standard Geometry
- Special Materials
- Prototype Development
Why LZK
Engineering depth where performance matters most.
We do not try to manufacture everything. We focus on the most difficult part of the customer’s rotating system and connect analysis, development, manufacturing and verification as one engineering process.
Application-led Engineering
Loads, interfaces, accuracy, speed and operating environment are evaluated before the bearing structure is defined.
Equivalent Replacement
Systematic analysis of original-brand geometry, materials, preload and dynamic performance enables reliable alternatives.
Custom Development
Non-standard design, prototype development, process planning and controlled production are delivered as one route.
Verified Performance
Dimensions, geometry, vibration, torque, temperature and life are confirmed through inspection data.
50+Years of engineering experience
230+Leading OEM customers worldwide
1/5–1/3Typical cost of original-brand alternatives
GlobalApplications across demanding industries
Founder portraitWMr. Wang · Bearing Engineer
Our Founder
Half a century devoted to one mission: solving difficult rotation problems.
Mr. Wang belongs to China’s first generation of bearing engineers. Across more than fifty years, he has led demanding bearing development for aerospace, medical equipment and advanced machinery, while helping shape national bearing standards.
“We choose to focus on the most difficult and critical part of the customer’s rotating system.”
Former Chief Engineer at LYC and ZWZFormer President of CMEC Design Institute No. 10Founder and engineering leader at LZK
Read the Founder’s Story →
Manufacturing Capability
Turning engineering concepts into production reality.
LZK connects precision machining, process control, assembly and final verification to support prototypes, small batches and stable volume production.
Discover the LZK factory →
Operating-Condition Analysis
Engineering begins with the equipment, load and performance target.
Process Development
Materials, heat treatment and machining routes are developed together.
Controlled Assembly
Clearance, preload and internal geometry are managed for stable motion.
Final Verification
Inspection data confirms that production matches engineering intent.
Customer Cases
Real problems.
Verified engineering results.
Every project begins with the customer’s actual operating conditions and ends with a solution that can be manufactured, inspected and trusted in service.
Explore All 14 Cases →
Featured Case · Medical Equipment
Breaking the Dependence on Imported Bearings
Nearly 20 years of trusted cooperation.
Raceway soft-zone hardening and optimized nylon spacers delivered stable accuracy, friction torque and load capacity for demanding medical equipment.
20 YearsPartnership
≈80%Acceptance rate
CustomDevelopment
Semiconductor
Localizing a critical rotary table bearing
A purpose-developed nylon cage secured reliable domestic supply.
Project resultLocalized Supply
View case →
Optoelectronics
A better-matched bearing for grinding equipment
Application-led redesign improved the structural match and reduced cost.
Project resultBetter Structural Match
View case →
News & Insights
From the LZK engineering journey.
Company milestones, manufacturing developments and technical perspectives from precision bearing specialists.
View all news →
Built on Precision Manufacturing, Embarking on a New Journey
China Machinery Luoyang Bearing Technology Co., Ltd. was officially established, marking an important first step in large precision bearing development and manufacturing.
Read full story →
01
→
02
→
03
→
04
→
New precision inspection capability enters operation
Expanded measurement capability supports tighter control of rotational accuracy.
Advancing thin-section bearing production technology
Process improvements create more consistent geometry and operating performance.
Engineering review process upgraded for custom projects
A clearer workflow connects operating conditions with bearing design.
Precision bearing solutions reach new overseas markets
International cooperation expands across medical and advanced manufacturing sectors.
Engineering Consultation
Have a difficult rotation problem?
Share your drawings, operating conditions and performance targets with the LZK engineering team.