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62 Series
Home Deep Groove Ball Bearings 62 Series

6206-ZZ Shielded Deep Groove Ball Bearing | Precision Metric Powerhouse | 25×52×15 mm

6206-ZZ Shielded Deep Groove Ball Bearing | Precision Metric Powerhouse | 25×52×15 mm

The 6205-ZZ is a high-performance, mid-series ball bearing engineered to deliver an exceptional balance of radial load capacity and high-velocity efficiency. Featuring dual non-contact metal shields (ZZ), this bearing ensures consistent internal lubrication and provides a mechanical barrier against dust without increasing rotational torque. With a 25mm bore and 52mm outer diameter, the 6205-ZZ is the industry standard for small-to-medium electric motors, industrial blowers, and domestic appliance drive systems.

6205-ZZ Deep Groove Ball Bearing 25x52x15 mm | Versatile 62 Series | Dual Metal Shields

Designed for sustained operational stability, the 6205-ZZ is manufactured from high-purity GCr15 chrome steel for maximum fatigue resistance. The precision-honed raceways and high-grade steel balls minimize vibration and acoustic noise, which is critical for high-speed motor applications. Because the metal shields do not physically contact the inner ring, the bearing maintains low operating temperatures and achieves higher limiting speeds compared to sealed variants, making it ideal for continuous-duty cycles in clean or semi-protected environments.

6206-ZZ Shielded Deep Groove Ball Bearing | Precision Metric Powerhouse | 25×52×15 mm

Comprehensive Applications

The 6205-ZZ provides the reliability needed for a wide range of precision machinery:

Electric Motors & Power Tools
  • High-efficiency AC and DC electric motors
  • Handheld industrial power tools
  • Portable generator rotor supports
Household & Commercial Appliances
  • Washing machine motor assemblies
  • Commercial kitchen equipment
  • Industrial vacuum cleaner fans
Automotive & Secondary Drives
  • Vehicle alternator internal bearings
  • Agricultural equipment pulley systems
  • Light-duty conveyor drive shafts
HVAC & Air Management
  • Centrifugal fan motor shafts
  • Air conditioning compressor units
  • Ventilation blower systems

Key Performance Features

01. Low-Friction Kinetic Efficiency

The 6205-ZZ utilizes a non-contact labyrinth seal design. This architecture provides the necessary protection against particulates while ensuring the lowest possible starting and running torque. This makes it an excellent choice for energy-sensitive applications where minimizing mechanical drag is paramount.

02. High Thermal Equilibrium

Due to the lack of seal friction, the 6205-ZZ operates with minimal heat generation. This thermal stability prevents the degradation of internal grease, ensuring a longer service life and higher rotational accuracy during peak RPM operations.

03. Super-Finished Raceways

Produced to P6 or P5 precision standards, the internal raceways are polished to a mirror finish. This reduces micro-friction and eliminates the high-frequency "whine" often associated with lower-grade bearings, ensuring silent operation in consumer-facing products.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 62 Series (Medium Duty)
Basic Designation 6205
Suffix ZZ (Double Non-Contact Metal Shields)
Bore Diameter (d) 25 mm
Outer Diameter (D) 52 mm
Width (B) 15 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard (P0) / P6 or P5 Available Upon Request
Cage Material Pressed Steel
Dynamic Load Rating (Cʳ) 14.0 kN
Static Load Rating (C₀ʳ) 7.85 kN
Limiting Speed (Grease) 13,000 r/min
Limiting Speed (Oil) --
Weight (approx.) 0.128 kg

Interchange Part Numbers

Compatible with international standard 25mm bore shielded bearings:

  • SKF: 6205-2Z
  • NSK: 6205ZZ
  • FAG6205-2Z
  • NTN: 6205ZZ
  • KOYO: 6205ZZ
  • Nachi: 6205ZZ

Design & Configuration

The 6205-ZZ comes factory-lubricated with a long-life synthetic grease, providing a maintenance-free "lubricated for life" solution in standard operating conditions. For applications involving significant shaft expansion or high vibration, we offer C3 internal clearance options. For environments with heavy moisture or fine liquid spray, the 6206-2RS (rubber sealed) version is recommended for superior protection.

"Delivering high-speed stability and quiet performance, the 6205-ZZ is the definitive choice for precision electric motor applications."

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The 6206 is a high-precision open-type ball bearing engineered for advanced mechanical assemblies that utilize oil-bath or oil-mist lubrication systems. By removing integrated seals and shields, this unshielded configuration achieves the absolute minimum rotational resistance and zero contact friction. With its standard 30mm bore and 62mm outer diameter, the 6206 Open Type is a critical component for high-speed gearboxes, internal combustion engine components, and specialized industrial spindles where thermal efficiency is a priority.

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Precision 25x52x15mm 6205-ZZ Shielded Bearing compatible with SKF 6205-2Z and NSK 6205ZZ for Electric Motors and Domestic Appliances
6206-ZZ Shielded Deep Groove Ball Bearing | Precision Metric Powerhouse | 25×52×15 mm

The 6205-ZZ is a high-performance, mid-series ball bearing engineered to deliver an exceptional balance of radial load capacity and high-velocity efficiency. Featuring dual non-contact metal shields (ZZ), this bearing ensures consistent internal lubrication and provides a mechanical barrier against dust without increasing rotational torque. With a 25mm bore and 52mm outer diameter, the 6205-ZZ is the industry standard for small-to-medium electric motors, industrial blowers, and domestic appliance drive systems.

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6205-2RS Sealed Deep Groove Ball Bearing | Rugged Metric Bearing | 25×52×15 mm

The 6205-2RS is a robust single-row ball bearing engineered to deliver balanced performance in demanding environments where radial space is moderate and protection is paramount. Equipped with dual contact rubber seals (2RS), this component effectively blocks entry of dust, moisture, and particulate matter while securely retaining internal grease. Featuring a 25mm bore, a 52mm outer diameter, and a 15mm width, it serves as a critical durable component for industrial pumps, agricultural machinery, household appliances, and automotive auxiliary systems.

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Precision 20x47x14mm 6204-ZZ Replacement Bearing compatible with SKF 6204-2Z and NSK 6204ZZ for Electric Motors
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The 6204-ZZ is a high-precision, mid-series ball bearing engineered to deliver a superior balance of radial load capacity and high-velocity stability. Equipped with dual non-contact metal shields (ZZ), this model excels at retaining internal grease and deflecting dry contaminants without increasing rotational torque. Featuring a 20mm bore and a 47mm outer diameter, the 6204-ZZ is the industry standard for high-performance electric motor rotors, power tool assemblies, and commercial office equipment requiring a maintenance-free rotational solution.

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The 6203-2RS is a highly versatile, medium-duty rotational component engineered for mechanical systems exposed to moderate contamination. Equipped with twin synthetic rubber seals (2RS), this bearing establishes a tight, protective boundary that aggressively blocks out moisture, ambient dust, and operational debris. Featuring a standard 17mm bore alongside a 40mm outer diameter, the 6203-2RS is the optimal selection for fractional horsepower motors, automotive alternators, and household appliances where sustained, maintenance-free performance is required.

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17x40x12 mm 6203 Open Deep Groove Ball Bearing - GCr15 Steel Unsealed Design for High Speed Electric Motors and Automotive Alternators
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The 6203 Open is a versatile, light-series ball bearing designed for applications requiring maximum rotational speed and efficient heat dissipation. Unlike sealed variants, this open-type configuration features no contact seals or shields, allowing for minimal friction torque and the ability to utilize external lubrication systems tailored to specific operating conditions. With a compact 17mm bore, 40mm outer diameter, and 12mm width, it serves as a critical component in electric motors, household appliances, and automotive accessories where the housing provides sufficient environmental protection.

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The 6202 Open is a versatile, high-performance ball bearing engineered for applications demanding minimal rotational resistance and extreme operational speeds. With a compact 15mm bore, 35mm outer diameter, and 11mm width, it is the preferred choice for electric motors, precision pumps, and light industrial equipment where external contamination control is managed by the housing assembly. As an open-type configuration, without integral seals or shields, this bearing relies on its clean, unobstructed internal geometry to deliver exceptionally low friction torque. 

Details

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