Affordable Fast Delivery Factory Direct QJ 302-305 Angular Contact Ball Bearings - High Quality, Low Noise, Boutique Mounting, ISO Certified
Affordable Fast Delivery Factory Direct QJ 302-305 Angular Contact Ball Bearings - High Quality, Low Noise, Boutique Mounting, ISO Certified - Image 2
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Estimated delivery time: 3-5 days

Affordable Fast Delivery Factory Direct QJ 302-305 Angular Contact Ball Bearings - High Quality, Low Noise, Boutique Mounting, ISO Certified

High-precision angular contact ball bearings featuring four-point mounting for enhanced stability. engineered with low-noise operation and Engineered with low-noise operation and superior durability for demanding industrial environments.

  • Models. qj 302, qj 303, qj 304, qj 305
  • Type. Single-row angular contact (40° contact angle)[2][9]
  • Material. GCr15 bearing steel (HRC 58-62)[5]
  • Load Capacity. Combined radial + axial loading[2][9]
  • Noise Level. ≤18dB (Z1 grade vibration standard)
  • Mounting. 4-point contact raceway design [9]
  • Precision. ABEC-5 (P5 equivalent)
  • Applications. CNC spindles, robotics, automotive systems

[2] angular_contact_bearing
[5] Explanation and pronunciation of bearing
[9] angular_contact_radial_bearing

Detailed parameters

Table of Contents

1. Product Specifications & Comparative Analysis

QJ 300 Series Technical Parameters

Model Bore Diameter(mm) Dynamic Load(kN) Static Load(kN) Max Speed(rpm) Noise Level(dB)
QJ 302 15 25.6 14.3 12,000 ≤38
QJ 303 17 28.9 16.1 11,500 ≤40

2. Industrial Applications & Technical Advantages

Core Industries Served

  • High-speed CNC machining centres
  • Precision robotics joints
  • Automotive turbocharger systems

3. Installation Best Practices

Four-Point Mounting Procedure

  1. Clean mounting surfaces with ISO 8573-1 Class 0 air
  2. Apply SKF TLMW 33 lubricant
  3. Use torque wrench (15-20 N-m)

4. Maintenance Protocols

Vibration Analysis Standards

Service Interval Acceptable Vibration(mm/s) Alert Threshold
0-500 hrs ≤1.8 2.1

5. Verified Client Implementations

Automotive Manufacturing Case

Client. Zhejiang Turbo Systems Co.
Application. Turbocharger shaft support
Result. 38% reduction in warranty claims

6. Technical Consultation

Contact our bearing engineers.
Email. info@vivalr.com
Tel. (86) 15866781826

[Ref No.] Volcano Engine
[Ref. No.] Volcano Ark Large Model Service Platform

About the company

nbearing is a professional bearing firm. We offer top-notch bearing products globally. With advanced technology and strict quality control, our diverse bearings serve industries like manufacturing and automotive. With advanced technology and strict quality control, our diverse bearings serve industries like manufacturing and automotive. Thanks to our professional team and good service, nbearing has won trust and a great reputation in the industry.

Why Collaborate with NBearing? Eight Reasons for a Win - win Partnership

In the bearing industry, choosing to cooperate with NBearing means embarking on a journey full of opportunities and value. we become your ideal partner with numerous outstanding advantages.

Exceptional Quality

We strictly control quality, use high - quality materials and advanced processes to ensure outstanding bearing performance, providing reliable support for your business.

Diverse Range

Our products cover various bearing types, meeting the needs of different industries. One - stop procurement saves you time and effort.

Competitive Pricing

We optimise the cost structure and offer cost - effective products, enhancing your profit margin while ensuring quality.

Customisation Service

We tailor bearing solutions according to your specific needs, meeting personalised business requirements.

Efficient Production

Advanced equipment and processes enable efficient production, ensuring rapid order delivery to meet your urgent needs.

Punctual Delivery

With a 99.99% delivery rate and a sound logistics system, we ensure on - time delivery and a stable supply chain for you.

Professional Team

Experienced professionals provide comprehensive technical support and services to help you solve various problems.

Long - term Partnership

We focus on building long - term relationships, continuously providing high - quality products and services, and growing together with you.

Why Chem-iso's delivery rate is guaranteed to be 99.99%

500+

Cooperate with 500+ suppliers for stable raw material supply.

99%

99% automated production ensures on-time order completion.

10+

10 global warehousing centres enable efficient order response.

8+

Partner with 8 top logistics for punctual goods delivery.

Trusted By 3,500+ Creatives & Businesses

OxyNinja makes you & your clients happy.
  • "Collaborating with Truksino is excellent! Their product range is extensive and of top - notch quality. The customisation service meets diverse needs. The customisation service meets diverse needs. Fast delivery, almost no delays, greatly enhances our competitiveness. Professional technical support makes cooperation smooth. They're a reliable partner."
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  • "Truksino is our trusted choice. Their competitive pricing saves costs. Professional technical support resolves issues quickly. Working with them makes our business run smoothly."
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    Sr. Director, Social Media Strategy and Audience Engagement
    Fake Company Inc

Join Hands with NBearing, Build a Distinguished Brand Together

NBearing focuses on the bearing field, crafting high - quality bearings with exquisite craftsmanship and innovative concepts. With outstanding quality, diverse products, and considerate services, it partners with numerous brands, shining brightly in the global market.
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Environmental Protection Science and Technology Park, Zhengfeng Road, High-tech Zone, Jinan City, Shandong Province
(86) 15866781826
(86) 15866781826

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