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.

Ideal for a diverse range of general-purpose machinery and equipment:
Small to Medium AC/DC Motor Shafts
Light to Medium Duty Gearboxes
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.
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.
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.
| 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 |
Direct replacement for:
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:
"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."
The 6022-2RS is a Double Rubber-Sealed Single Row Deep Groove Ball Bearing engineered to deliver reliable, long-lasting performance in industrial power transmission and processing equipment. Equipped with two synthetic rubber contact seals (2RS) on both sides, it provides excellent protection against moisture, dust, and fine particulate contamination, effectively retaining lubrication and preventing premature wear in demanding operating conditions. With a 110 mm bore and optimized cross-section from the 60 series extra-light designation, this bearing is well-suited for electric motors, pumps, gearboxes, and industrial machinery operating in moderately contaminated environments.
Details
The 6003-ZZ is a versatile, single-row deep groove ball bearing engineered for a broad spectrum of industrial and light-duty machinery requiring dependable performance under moderate loads. Featuring dual Z-type metal shields, this bearing provides effective protection against the ingress of dust and solid contaminants while maintaining low frictional torque. With a 17 mm bore and a 10 mm width, it is the preferred choice for electric motors, pumps, and household appliances where durability and contamination resistance are critical for extended service life.
Details
The 602 Open is a Miniature Deep Groove Ball Bearing engineered for ultra-compact mechanisms where minimal friction and high rotational speeds are paramount. With an open design (without shields or seals), this bearing allows maximum speed capability and easy relubrication, making it ideal for precision instruments, small motors, and devices that demand low torque and smooth, quiet operation in clean environments. Its 2 mm bore and ultra-light cross-section enable integration into the most space-constrained assemblies.
Details
The 602-2RS is a Double Rubber-Sealed Miniature Deep Groove Ball Bearing engineered for compact mechanisms requiring reliable protection against moisture, dust, and fine particulate contamination. With two synthetic rubber contact seals (2RS) on both sides, this bearing provides excellent sealing performance while retaining lubrication and preventing ingress of contaminants in challenging environments. Featuring a 2mm bore and ultra-compact cross-section, it is ideal for precision instruments, small electric motors, and medical devices where space is severely limited and operational cleanliness is critical .
Details
The 603-2RS is a Miniature Deep Groove Ball Bearing designed for high-precision applications where space is extremely limited and reliable sealing is critical. Featuring double rubber contact seals (2RS) , this variant provides superior protection against moisture, dust, and fine particulate contamination. With a tiny 3 mm bore, a 9 mm outer diameter, and a 5 mm width, it is the ideal choice for compact rotary assemblies requiring maintenance-free operation and low frictional torque.
Details
The 6008 Open is a Versatile and Widely Used Single Row Deep Groove Ball Bearing engineered for general industrial applications requiring high-speed capability and robust performance. Featuring an open (no seal or shield) design, it allows for free circulation of oil or grease lubrication, making it ideal for assemblies where lubrication is supplied externally. With a 40 mm bore, 68 mm outer diameter, and 15 mm width, this bearing is a standard choice for transmissions, electric motors, and industrial gearboxes where reliable radial and axial load accommodation is essential .
Details
The 6008-2RS is a Single-Row Deep Groove Ball Bearing featuring double-lip contact rubber seals on both sides, designed for reliable performance in light-to-medium duty industrial and commercial equipment. Its compact 40 mm bore, 68 mm outer diameter, and 15 mm width make it ideal for applications with limited housing space that require protection against contaminants. The integrated 2RS seals effectively retain lubricant and exclude dust, moisture, and debris, ensuring extended maintenance-free operation in moderate-speed environments.
Details
The 6008-2Z is a Standard Shielded Deep Groove Ball Bearing from the popular 60-series, designed to handle moderate radial and axial loads in both directions with efficiency and quiet operation. Its double metal shield (2Z) configuration provides effective protection against dust and contaminants while retaining lubrication, making it a maintenance-friendly solution for a wide array of applications. With a 40 mm bore, 68 mm outer diameter, and 15 mm width, this bearing is a common choice for electric motors, automotive components, and general machinery where dependable, high-speed performance is required.
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