Affordable & Fast Delivery NSK Deep Groove Ball Bearings (6219zz, 6220zz, 6221zz) - Factory Direct Prices, ISO Certified
Affordable & Fast Delivery NSK Deep Groove Ball Bearings (6219zz, 6220zz, 6221zz) - Factory Direct Prices, ISO Certified - 图片 2
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Affordable & Fast Delivery NSK Deep Groove Ball Bearings (6219zz, 6220zz, 6221zz) - Factory Direct Prices, ISO Certified

NSK 6219ZZ, 6220ZZ, 6221ZZ Deep Groove Ball Bearings with double metal shields (ZZ) for high-speed, low-noise applications in machine tools and industrial machinery. Engineered for precision and durability.

  • Model: 6219ZZ, 6220ZZ, 6221ZZ
  • Type: Single-row deep groove ball bearings
  • Dimensions:
    • 6219ZZ: 95mm (ID) × 170mm (OD) × 32mm (Width) [1]
    • 6220ZZ: 100mm (ID) × 180mm (OD) × 34mm (Width)
    • 6221ZZ: 105mm (ID) × 190mm (OD) × 36mm (Width) [9]
  • Shields: Double metal shields (ZZ)
  • Material: High-carbon chromium steel
  • Applications: Machine tools, motors, conveyors, and automation systems.

[1] NSK 6219ZZ轴承-百科
[9] Genuine NSK Japan 6221 Deep Groove Ball Bearing 105mm

Detailed parameters

Table of Contents

Product Overview & Specifications

NSK 6219zz, 6220zz, 6221zz Deep Groove Ball Bearings

NSK 6219zz, 6220zz, and 6221zz are single-row deep groove ball bearings designed for high-speed performance and radial/axial load support. These bearings feature steel shields (zz) for contamination protection and are widely used in machine tools, industrial motors, and precision equipment.

Key Specifications

Model Inner Diameter (mm) Outer Diameter (mm) Width (mm) Dynamic Load (kN) Static Load (kN) Max Speed (rpm)
6219zz 95 170 32 82.5 53.0 6,000
6220zz 100 180 34 92.3 60.5 5,600
6221zz 105 190 36 102.0 68.0 5,300

Detailed Applications

Primary Industries & Uses

  • Machine Tools: Spindle support, feed screws, and rotary tables.
  • Electric Motors: High-speed rotor stabilization in industrial motors.
  • Automation Systems: Robotics, CNC machinery, and linear guides.
  • Pumps & Compressors: Shaft support under mixed loads.

Use Case Scenarios

Scenario 1: CNC Lathe Spindles

NSK 6220zz bearings are installed in CNC lathe spindles to reduce friction during high-speed turning operations. Their steel shields prevent metal chips from entering, extending service life by 30% compared to open bearings.

Scenario 2: Industrial Gearboxes

6219zz bearings handle combined radial and axial loads in gearboxes, maintaining alignment under 12,000 N·m torque. Users report a 20% reduction in downtime due to their sealed design.

Industry-Specific Use Cases

Aerospace Manufacturing

6221zz bearings are used in composite material cutting machines, operating at 4,800 rpm with ±2μm runout accuracy, meeting AS9100 standards.

Automotive Assembly Lines

Robotic welding arms utilize 6219zz bearings for smooth articulation, achieving 98% uptime in 24/7 production environments.

Client Success Stories

Case 1: Shanghai Precision Machinery Co., Ltd.

Challenge: Frequent bearing failures in high-speed milling centers (8,000+ rpm).
Solution: Upgraded to NSK 6220zz bearings with grease-purged shields.
Result: 18-month operation without replacement, vibration levels reduced to ISO 1940 G2.5.

Case 2: Guangdong Electric Motor Plant

Challenge: Lubricant leakage in 55kW motors causing 15% failure rate.
Solution: Implemented 6219zz bearings with non-contact seals.
Result: Zero lubrication-related failures over 2 years, energy efficiency improved by 4%.

Case 3: Shenzhen Automation Solutions Provider

Challenge: Bearing contamination in PCB assembly robots.
Solution: Deployed 6221zz bearings with customized labyrinth seals.
Result: MTBF increased from 6,000 to 14,000 hours.

Contact for Inquiry

Request Pricing or Technical Specifications

Email: info@vivalr.com
Phone: (86) 15866781826

Provide your application details for customized bearing solutions:

  • Operating speed range
  • Radial/Axial load requirements
  • Environmental conditions (temperature, contaminants)
  • Mounting constraints

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.

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.

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

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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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