High Speed Miniature Bearings

High Speed Miniature Bearings

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Shandong Juyuan Bearing Co., Ltd., as a leading manufacturer of thin-walled sleeve bearings in China, provides high-precision and long-life core component solutions for the global industrial field with over ten years of professional accumulation. The company is located in Linqing, Shandong, a highland of China's bearing industry.
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Technical Parameters

Shandong Juyuan Bearing Co., Ltd., as a leading manufacturer of thin-walled sleeve bearings in China, provides high-precision and long-life core component solutions for the global industrial field with over ten years of professional accumulation. The company is located in Linqing, Shandong, a highland of China's bearing industry. Relying on the collaborative advantages of national level industrial clusters, it has built a full chain intelligent manufacturing system from raw material research and development, precision machining to finished product testing, ensuring that every product meets ISO international standards.

 

Advantages Of Direct Supply From Manufacturers

As a source manufacturer, Juyuan Bearing has an independent research and development center and automated production line. Through strict quality control processes such as multi process laser detection and dynamic load testing, it achieves micrometer level accuracy (roundness ≤ 0.3 μ m, roughness ≤ 0.05 μ m) of thin-walled sleeve bearings, and can provide customized designs according to customer needs, including special materials (such as stainless steel, copper alloy), self-lubricating structures (oil immersed or PTFE coating), and anti-corrosion treatment. The model of directly connecting with end customers reduces costs by 15% -20%, providing global customers with cost-effective options.

 

Industrial Cluster Collaboration

As one of the largest bearing industry bases in China, Linqing, Shandong has a production capacity of over 7000 bearing models, forming a complete industrial chain covering forging, heat treatment, and retainer manufacturing. Juyuan Bearing collaborates deeply with surrounding enterprises to share technology research and development resources (such as jointly developing high-precision rollers with universities), and achieves digital supply chain management through the "Cloud Axis Connection" industry platform, ensuring stable raw material supply and shortening delivery cycles by more than 30%. This cluster effect not only enhances the consistency of product quality, but also enables Juyuan to quickly respond to the diverse demands of the global market.

 

Shandong Juyuan Bearing Co., Ltd. has built an efficient logistics service system covering the world, relying on the two international hub ports of Qingdao Port and Rizhao Port in Shandong Province. As an important node of the "the Belt and Road", Qingdao Port has more than 230 international routes, which can realize the logistics timeliness guarantee of 72 hour access to Europe, America, Southeast Asia and other major markets. The company has achieved a supply chain advantage of reducing logistics costs by 12% by optimizing the full container shipping mode and bonded warehousing management, and providing end-to-end full process cargo tracking services to global customers to ensure the safety and delivery timeliness of goods transportation.

 

There is a company in South Korea that produces intelligent robots. Previously, they used imported bearings, but later they used our high-precision thin-walled bearings. They feel that they are not inferior to imported ones at all; We have also customized impact resistant copper alloy sleeve bearings for European agricultural machinery manufacturers, which are also very easy to use.

 

In recent years, we have always adhered to the principle of "technology first, quality as the foundation" and continuously invested in intelligence, such as introducing AI visual inspection systems. Now, the product lifespan can be 50% longer than the industry average. International big companies like Caterpillar and John Deere have been dealing with us for a long time and have always trusted our products - reliable, durable, and easy to cooperate with

 

Choosing Juyuan bearings means choosing excellent quality from China's bearing industry cluster, efficient delivery from Shandong port logistics network, and full process technical support from local manufacturers

 

International General Product Parameters for Thin-Wall Sleeve Bearings

Parameter Name

Unit

Typical Value/Range

International Standard

Remarks

Bore Diameter

mm

10 - 500

ISO 15: 2014

Custom non-standard sizes available (accuracy ±0.01mm)

Outer Diameter

mm

15 - 550

ISO 492: 2018

Thin-wall design with wall thickness ratio ≤0.05 (OD/wall thickness)

Width

mm

5 - 100

ISO 120: 2015

Axial tolerance ±0.02mm

Material

-

GCr15 bearing steel (AISI 52100)

ASTM A295

Optional: stainless steel (SS304/440C), copper alloy (CuSn12)

Precision Class

-

P5/P4/P2 (ISO 492)

ISO 492: 2018

Roundness ≤0.5μm (P4 class), surface roughness Ra ≤0.2μm

Basic Dynamic Load Rating (C)

kN

5 - 200

ISO 281: 2017

Based on 10^6 revolutions life

Basic Static Load Rating (C0)

kN

8 - 300

ISO 76: 2018

Safety factor for limiting static load ≥1.2

Limiting Speed

rpm

5000 - 25000

ISO 15: 2014

20% derating for grease lubrication; refer to working conditions for oil lubrication

Operating Temperature Range

-40 ~ +120

ISO 16281: 2018

Ceramic coating available for high-temperature environments (+200℃)

Tolerance Range (Bore/OD)

mm

+0.005/-0.002

ISO 492: 2018

Complies with P4 class precision bearing tolerance standards

Surface Treatment

-

Quenched + tempered (HRC60-64)

ISO 6872: 2015

Optional: DLC coating (corrosion resistance), PTFE self-lubricating coating

Lubrication Method

-

Lithium-based grease (NLGI 2)/oil lubrication

ISO 11008: 2016

Customizable maintenance-free self-lubricating structure (with solid lubricant)

Certification Standards

-

ISO 9001:2015 / ISO 14001:2015

-

Regional certifications (e.g., CE, RoHS) available upon request

Application Scenarios

-

High-speed light load/precision positioning/low-friction scenarios

-

High-precision applications such as industrial robots, medical equipment, aerospace components

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