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60 Series
Home Deep Groove Ball Bearings 60 Series

6004-ZZ Shielded Deep Groove Ball Bearing For High-Speed Industrial & Automotive Applications | 20×42×12 Mm

6004-ZZ Shielded Deep Groove Ball Bearing For High-Speed Industrial & Automotive Applications | 20×42×12 Mm

The 6004-ZZ is a Double Metal-Shielded Medium Series Deep Groove Ball Bearing designed for reliable high-speed operation in clean to moderately contaminated environments. Equipped with two non-contact steel shields (ZZ) on both sides, it provides effective protection against dust and debris while maintaining low friction and enabling high rotational speeds. With a 20 mm bore and a robust medium cross-section, this bearing is ideal for electric motors, automotive accessories, pumps, and industrial machinery where speed, durability, and contamination resistance are key.

6004-ZZ Deep Groove Ball Bearing 20×42×12 mm | ISO 60 Series – Medium | Double Metal Shielded

Featuring a classic deep groove design, this shielded bearing supports smooth and quiet operation at speeds up to 22,000 r/min (Oil). It is engineered to handle moderate radial loads and light axial loads in both directions. The 6004-ZZ is an excellent choice for applications requiring high-speed performance with minimal friction, such as in industrial motors, automotive systems, and precision machinery where dust protection is essential.

6004-ZZ Shielded Deep Groove Ball Bearing For High-Speed Industrial & Automotive Applications | 20×42×12 Mm

Comprehensive Applications

Suitable for medium- to high-speed applications across multiple sectors where dust protection and reliable performance are critical:

General Machinery & Equipment
  • Printing Machinery Rollers
  • Industrial Fans & Blowers
  • Packing & Food Processing Equipment
  • General Machinery Maintenance & Drives
Agriculture & Outdoor Equipment
  • Agricultural Machinery Motors
  • Lawn Mower Spindles & Garden Tool Drives
  • Irrigation & Water Pump Systems
HVAC & Appliance Engineering
  • Blower Motors & Ventilation Systems
  • Household Appliance Motors (Washers, Dryers, Fans)
  • HVAC Fan & Blower Assemblies
Industrial & Automotive Systems
  • Industrial AC/DC Motors & Spindles
  • Automotive Alternators, Water Pumps & Cooling Fans
  • Gearboxes, Transmission Systems & Drivetrain Components
  • Conveyor Systems & Material Handling Drives

Key Performance Features

01. High-Speed Capability

Precision-engineered with optimized internal geometry and smooth raceways, the 6004-ZZ ensures stable performance, low vibration, and quiet operation even at elevated rotational speeds.

02. Effective Steel Shield Protection

Two non-contact steel shields (ZZ) provide reliable defense against dust and dry contaminants while minimizing friction. This design is ideal for high-speed applications where sealing without added drag is required.

03. Durable Medium Series Build

Constructed to medium series dimensions (20×42×12 mm), this bearing offers a strong balance of load capacity, speed capability, and compact design, suited for demanding industrial and automotive uses.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 60 Series – Medium
Basic Designation 6004
Suffix ZZ (Double Metal Shields)
Bore Diameter (d) 20 mm
Outer Diameter (D) 42 mm
Width (B) 12 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard / P5 Grade Available
Cage Material Steel Stamped
Dynamic Load Rating (Cʳ) 12.7 kN
Static Load Rating (C₀ʳ) 6.55 kN
Limiting Speed (Grease) 18,000 r/min
Limiting Speed (Oil) 22,000 r/min
Weight (approx.) 68 g

Interchange Part Numbers

Common manufacturer equivalents include:

  • SKF: 6004-ZZ
  • NSK: 6004 ZZ
  • FAG: 6004-ZZ
  • NTN: 6004LLU
  • KOYO: 6004LLB

Design & Configuration

The 6004-ZZ is supplied with standard double steel shields, offering effective non-contact protection in dry or lightly contaminated environments. For wet or heavily contaminated conditions, the double rubber-sealed version (6004-2RS) is recommended as an alternative.

"Choose the 6004-ZZ for high-speed electric motors, automotive accessories, and industrial drives where dust protection and low-friction performance are essential for long service life."

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Request a Quote for Ball Bearings

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Please submit your inquiry below for detailed product and pricing information. We will get back to you within 24 hours.
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