6004 Deep Groove Ball Bearing For General Machinery & Electric Motors | 20×42×12 Mm

The 6004 is a Standard Open Deep Groove Ball Bearing designed for versatile and reliable performance in a wide array of industrial and commercial applications. Featuring the universal deep groove raceway, this bearing efficiently accommodates radial loads and moderate axial loads in both directions. With a 20 mm bore, it serves as a fundamental and widely used component in electric motors, gearboxes, household appliances, and general machinery where dependable operation and cost-effectiveness are key.



6004 Deep Groove Ball Bearing 20x42x12 mm | Standard Series | Open Design (Shields or Seals Optional)

A common and highly versatile industrial bearing built to the standard deep groove geometry. Engineered for smooth operation at speeds up to 14,000 r/min (Grease). The 6004 offers a robust radial load capacity, making it a go-to choice for a multitude of drive and support applications across various industries.

6004 Deep Groove Ball Bearing For General Machinery & Electric Motors | 20×42×12 Mm

Comprehensive Applications

Ideal for a diverse range of general-purpose machinery and equipment:

Electric Motors & Drives
  • Small to Medium AC/DC Motor Shafts

  • Pump and Compressor Motors
  • Blower, Fan, and Ventilation Motors
  • Appliance Motor Bearings (e.g., Washing Machines)
Automotive & Auxiliary Equipment
  • Automotive Alternators and Starters
  • Water Pump Bearings
  • Power Steering Pumps
  • Industrial Fan Clutches
General Industrial Machinery
  • Light to Medium Duty Gearboxes

  • Conveyor Roller Ends
  • Material Handling Equipment Shafts
  • Packaging and Food Processing Machinery
Consumer & Commercial Appliances
  • Power Tool Drives (Drills, Sanders)
  • Floor Care Equipment
  • Commercial Appliance Motors
  • Agricultural Sprayer Pumps

Key Performance Features

01. Robust & Economical Design

The standard series construction provides a reliable and cost-effective solution with a balanced load capacity. Manufactured from chrome steel, it ensures good durability and long service life in typical operating conditions.

02. Maximum Versatility & Availability

As one of the most common bearing sizes globally, the 6004 offers exceptional interchangeability and availability. Its standard open design allows for easy customization with optional shields (Z, ZZ) or contact seals (RS, 2RS) to suit specific environmental needs.

03. Smooth & Quiet Running

Produced to standard industrial tolerances for consistent quality. The optimized deep groove raceway promotes stable rotation with low vibration and noise, contributing to efficient and reliable system performance.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 60 Series – Standard Series
Basic Designation 6004
Suffix Open (Shields/Seals Optional: Z, ZZ, RS, 2RS)
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 Pressed Steel
Dynamic Load Rating (Cʳ) 9.95 kN
Static Load Rating (C₀ʳ) 5.00 kN
Limiting Speed (Grease) 14,000 r/min
Limiting Speed (Oil) 19,000 r/min
Weight (approx.) 68 g

Interchange Part Numbers

Direct replacement for:

  • SKF: 6004
  • NSK: 6004
  • FAG: 6004
  • NTN: 6004
  • KOYO: 6004

Design & Configuration

The 6004 is supplied as an open bearing as standard, allowing for easy initial lubrication inspection and potential re-lubrication. To match application requirements, it is commonly available with various closures:

  • Single Shield (6004-Z) / Double Shield (6004-ZZ): For basic dirt and debris protection.
  • Single Seal (6004-RS) / Double Seal (6004-2RS): For better protection against dust and moisture in demanding environments.

"For electric motor repairs, general machinery, and a vast range of OEM applications, the 6004 provides a reliable, cost-effective, and easily sourced bearing solution. Select shield or seal variants to enhance protection as needed."



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