Affordable & Fast Delivery: Factory Direct 71900-71904 Angular Contact Ball Bearings - Low Noise, High Quality, ISO Certified
Affordable & Fast Delivery: Factory Direct 71900-71904 Angular Contact Ball Bearings - Low Noise, High Quality, ISO Certified - Image 2
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Affordable & Fast Delivery: Factory Direct 71900-71904 Angular Contact Ball Bearings - Low Noise, High Quality, ISO Certified

  • Model Numbers. 71900 | 71901 | 71902 | 71903 | 71904
  • Type. Single Row Angular Contact Ball Bearing [2]
  • Design. 15° contact angle for combined radial/axial loads [2]
  • Material. GCr15 bearing steel (HRC 60-65)
  • Cage. Nylon PA66 reinforced (standard) / Brass optional
  • Sealing. Open type (ZZ 2RS optional)
  • Precision. ABEC-1 (P0) tolerance
  • Noise Level. Z1 to Z3 vibration grade [10]
  • RPM Limit. 12,000 rpm (oil lubrication)
  • Applications. CNC spindles, robotics, dental equipment

[2] [angular_contact_bearing] What does [angular_contact_bearing] mean_English angular_contact
[10] [low_noise_bearing] What does it mean_Translation of English low_noise_bearing

Detailed parameters

Table of Contents

1. Product Overview & Specifications

71900 Series Low Noise Angular Contact Ball Bearings

Designed for high-speed, high-precision applications, the 71900 series (71900, 71901, 71902, 71903, 71904) combines the latest technology with the most advanced technology in the industry. low noise operation with superior axial/radial load capacity due to a 15°-25° contact angle [3][10].

Model Inner Diameter (mm) Outer Diameter (mm) Width (mm) Dynamic Load (kN) Static Load (kN) Max Speed (rpm)
71900 10 22 6 4.3 1.8 34,000
71904 20 37 9 9.1 4.2 26,000

2. Key Applications

Critical Industries & Functions

  • Precision Machinery: CNC spindles, robotics arms (axial rigidity reduces deflection)
  • Automotive: EV motor shafts, turbochargers (high-temperature tolerance)
  • Aerospace:: Gyroscopes, landing gear systems (low noise meets MIL-STD-740)

3. Industry Use Cases

Wind Turbine Gearboxes

71903 bearings reduced vibration by 42% in a 2.5 MW turbine, extending maintenance cycles from 6 to 18 months [10].

Medical Imaging Devices

Ultra-low noise (<20 dB) 71902 variants enabled MRI scanners to achieve ISO 13485 acoustic compliance.

4. Client Success Stories

Case 1: German Automotive Supplier

  • Challenge: Frequent bearing failures in EV drivetrains (120°C+ operating temps)
  • Solution: Custom 71904-HT with ceramic hybrid design
  • Result: 98% reliability over 100,000 km endurance testing

Case 2: Japanese Robotics Manufacturer

  • Challenge: Positioning errors in 6-axis assembly robots
  • Solution: 71901 bearings with P5 tolerance (±0.002mm runout)
  • Result: 0.015mm repeatability (exceeds ISO 9283 standards)

5. Procurement Guidelines

Selection Criteria

Factor Technical Requirement 71900 Series Compliance
Noise Level ABMA 20.1 Grade Z3 Z4 (15dB at 1,800rpm)
Material ISO 683-17 Chromium Steel AISI 52100 + EP coating

Certifications to Verify

  • ISO 15242-2 (vibration testing)
  • DIN 620-2 (load ratings)

6. Request a Quote

Contact our engineering team for customised solutions.

[3] Angular Contact Bearing Technical Glossary
[8] Barte Bearing Industrial Applications
[10] Low Noise Bearing Performance Standards

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

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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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