• KET Metric Miniature Ball Bearing - High-Speed Precision Micro Bearing - KET Precision BearingsMetric Miniature Ball Bearing
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KET Precision Bearings

KET 603 / 603ZZ Metric Miniature Ball Bearing (3x9x3mm) - High-Speed Precision Micro Bearing

KET 603 / 603ZZ Metric Miniature Ball Bearing (3x9x3mm) - High-Speed Precision Micro Bearing

В наличии: 999999

Inner Diameter
Outer Diameter
Width/Thickness
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Product Description:

Core Selling Points

  • Exact Metric Specifications: Precision engineered with a 3 mm inner diameter and a 9 mm outer diameter for seamless integration into global metric-based mechanical assemblies [cite: 1].

  • Extreme High-Speed Stability: Capable of reaching an extraordinary 67,000 RPM with oil lubrication and 56,000 RPM with grease [cite: 1].

  • Reliable Load Capacity: Delivers a 570 N basic dynamic load rating and 187 N static load rating, providing excellent durability for delicate micro-applications [cite: 1].

  • Factory-Direct Supply: Manufactured by Ningbo Kexiang Bearing Technology Co., Ltd. to secure highly competitive B2B wholesale pricing [cite: 1].

Technical Specifications

Parameter Specification
Model Variants KET 603 (Open Type) / 603ZZ (Shielded Type) [cite: 1]
Inner x Outer Diameter (d x D) 3 mm x 9 mm [cite: 1]
Width / Thickness (B/B1) 3 mm (Open) / 5 mm (Shielded) [cite: 1]
Dynamic / Static Load Rating (Cr / Cor) 570 N / 187 N [cite: 1]
Limiting Speed (Grease / Oil) Up to 56,000 RPM / Up to 67,000 RPM [cite: 1]

Strategic Manufacturing Partner Qualifications

  • Internationally Certified Quality Systems: We proudly hold dual ISO9001 certifications [cite: 4, 9] and the stringent automotive industry standard IATF16949 [cite: 8].

  • Recognized Engineering Innovation: Our continuous R&D is validated by our recognition as a High-Tech Enterprise [cite: 5] and a Technology-Based SME in Zhejiang Province [cite: 10].

  • Global Material Safety Compliance: Our products pass comprehensive third-party SGS laboratory testing for SVHC [cite: 6] and RoHS compliance [cite: 7].

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FAQ

Customized precision solutions for industrial applications. OEM/ODM support.

Can you customize bearings for specific industry applications?

Yes, absolutely. In addition to our standard product lines, we can customize various non-standard bearings exactly according to customer requirements and technical drawings.

What is your minimum order quantity (MOQ)?

Our MOQ is typically 100 pieces for standard bearings. For custom bearings, MOQ may vary depending on specifications.

How long is the delivery time?

Standard bearings: 3-7 days. Custom bearings: 15-25 days. Express shipping available for urgent orders.

How do you guarantee the quality of your bearings?

Quality is our core focus. Our factory operates under strict quality management systems and holds the ISO9001 Quality Management System Certificate. We also utilize highly advanced production and testing equipment, including automatic noise tests, automatic bore tests, roundness instruments, spectrometers, and bearing life testing machines to ensure every batch meets global standards.

What certifications do your products and factory hold?

Quality is our priority. Our factory is certified with ISO9001 and IATF 16949 Quality
Management Systems. We are recognized as a High-Tech Enterprise, and our bearings
pass strict SGS (RoHS/SVHC) testing.

Do you provide after-sales support?

Yes. We provide technical assistance and responsiveafter-sales service for Precision bearing, including product selection,installation questions and replacement support.

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