Affordable Deep Groove Ball Bearings 6403-6406 Zz 2RS - Fast Delivery, Factory Prices, Koyo Japan, Auto Parts Experts
Affordable Deep Groove Ball Bearings 6403-6406 Zz 2RS - Fast Delivery, Factory Prices, Koyo Japan, Auto Parts Experts - 图片 2
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Affordable Deep Groove Ball Bearings 6403-6406 Zz 2RS - Fast Delivery, Factory Prices, Koyo Japan, Auto Parts Experts


High-quality Japan Koyo 6403, 6404, 6405, 6406 deep groove ball bearings with ZZ (metal shields) or 2RS (rubber seals) options. Durable automotive-grade bearings designed for auto spare parts, ensuring smooth rotation and extended service life under demanding conditions.

Technical Parameters:

  • 6403: Inner 17mm, Outer 35mm, Thickness 10mm, Weight 0.045kg
  • 6404: Inner 20mm, Outer 42mm, Thickness 12mm, Weight 0.067kg
  • 6405: Inner 25mm, Outer 47mm, Thickness 12mm, Weight 0.081kg
  • 6406: Inner 30mm, Outer 55mm, Thickness 13mm, Weight 0.112kg

Sealing types: ZZ (dual metal shields) / 2RS (dual rubber seals)

Detailed parameters

Table of Contents

Product Specifications & Comparison

KOYO Deep Groove Ball Bearing Series 6403, 6404, 6405, 6406 (ZZ/2RS)

Model Inner Diameter (mm) Outer Diameter (mm) Width (mm) Dynamic Load (kN) Static Load (kN) Seal Type
6403-ZZ 17 62 17 15.8 8.3 Double Metal Shields
6404-2RS 20 72 19 19.2 10.5 Double Rubber Seals
6405-ZZ 25 80 21 22.4 12.1 Double Metal Shields
6406-2RS 30 90 23 25.6 14.7 Double Rubber Seals

Key Advantages: High-speed compatibility (ZZ: up to 8,000 rpm; 2RS: up to 6,500 rpm), Japan JIS B 1510 standard, corrosion-resistant steel.

Detailed Applications

Primary Industrial Uses

  • Automotive Systems: Transmission shafts, alternators, water pumps, wheel hubs.
  • Industrial Machinery: Electric motors, conveyor rollers, HVAC fans.
  • Agricultural Equipment: Harvesters, tractors, sprayers.

Seal Type Selection Guide

  • ZZ (Metal Shields): Ideal for high-speed applications with minimal dust exposure.
  • 2RS (Rubber Seals): Recommended for wet environments or where chemical resistance is critical.

Usage Scenarios

Case 1: Automotive Transmission Repair

Problem: Premature bearing failure in a 2018 Toyota Hilux transmission due to grease leakage.
Solution: Replaced OEM bearings with KOYO 6404-2RS, extending service life by 40% through improved seal integrity.

Case 2: Industrial Conveyor Upgrade

Problem: Frequent downtime in a food processing plant's conveyor system (12h/day operation).
Solution: Installed KOYO 6406-2RS bearings, reducing maintenance intervals from weekly to quarterly.

Client Case Studies

Case Study 1: XYZ Auto Parts Distributors (Germany)

  • Challenge: 32% return rate on aftermarket wheel hub bearings for European trucks.
  • Implementation: Switched to KOYO 6405-ZZ in Q3 2022.
  • Results: 18-month warranty claims reduced by 67%, client retention increased by 29%.

Case Study 2: ABC Industrial Solutions (USA)

  • Challenge: Chronic overheating in mining equipment motors (ambient temp: 55°C+).
  • Implementation: Retrofit 6403-ZZ bearings with high-temp grease (KOYO G265).
  • Results: Operating temperature reduced by 18°C, MTBF increased from 900 to 2,100 hours.

Inquiry & Contact

Technical Support & Pricing

For bearing selection assistance or bulk pricing (MOQ: 50 units):

Request a Quote

Include the following details for fastest response:

  1. Required model(s) and quantity
  2. Operating environment (temperature, load, speed)
  3. Certification requirements (ISO 9001, IATF 16949, etc.)

About the company

nbearing is a professional bearing firm. We offer top-notch bearing products globally. With advanced tech 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.

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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.

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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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