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62 Series
Home Deep Groove Ball Bearings 62 Series

6215 Open Deep Groove Ball Bearing | 75×130×25 mm | Industrial Standard Series

6215 Open Deep Groove Ball Bearing | 75×130×25 mm | Industrial Standard Series

The 6215 is a high-precision single-row radial bearing designed for larger industrial shafts requiring a combination of high-speed capability and significant radial load support. With a 75 mm bore, 130 mm outer diameter, and 25 mm width, this open-type bearing is a cornerstone component in heavy-duty machinery. Its open architecture allows for seamless integration into oil-bath or circulating lubrication systems, ensuring optimal heat dissipation and minimal friction torque during continuous operation.

6215 Deep Groove Ball Bearing 75×130×25mm | ISO 62 Series | High-Speed Open Design

Manufactured from premium vacuum-degassed GCr15 chrome steel, the 6215 is engineered to withstand demanding mechanical stresses. It offers a dynamic load rating of 66.3 kN and a static load rating of 49.0 kN, making it suitable for both steady-state rotation and applications subject to moderate axial thrust. The precision-honed raceways are designed to maintain tight tolerances, reducing vibration and noise levels in high-torque environments such as industrial gearboxes and large-scale motor assemblies.

6215 Open Deep Groove Ball Bearing | 75×130×25 mm | Industrial Standard Series

Comprehensive Applications

The 6215's balanced dimensions and high-load capacity make it an essential component for a wide array of heavy machinery.

Large Electric Motors & Generators
  • Industrial-grade AC/DC motor shafts
  • High-capacity generator rotors
  • Wind turbine auxiliary drives
  • Traction motors for railway systems
Power Transmission & Gearboxes
  • Multi-stage industrial speed reducers
  • Bevel and helical gearbox shafts
  • Marine propulsion drive systems
  • Heavy-duty clutch assemblies
Fluid Handling & Compression
  • Large-scale centrifugal water pumps
  • Multi-stage air compressors
  • Industrial chemical processing pumps
  • High-volume blower systems
Processing & Manufacturing Equipment
  • Printing and paper mill rollers
  • Steel mill auxiliary machinery
  • Textile manufacturing equipment
  • Industrial mixing and blending units

Key Performance Features

01. Optimized Thermal Management

The open configuration of the 6215 facilitates unrestricted lubricant flow, which is critical for cooling the bearing during high-speed operation. This design prevents heat buildup, thereby extending the fatigue life of the chrome steel balls and the cage assembly under sustained loads.

02. High Rotational Accuracy

Produced to P6 or P5 precision grades upon request, the 6215 ensures minimal radial runout. This high level of manufacturing accuracy is vital for maintaining the alignment of long shafts in complex drivetrains, reducing energy consumption and mechanical wear.

03. Versatile Lubrication Flexibility

Without the restriction of integral seals, the 6215 can be lubricated using application-specific greases or oils. This flexibility allows engineers to select the best lubrication method based on the operating temperature, environment, and speed requirements of the specific machinery.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 62 Series – Medium/Large Duty
Basic Designation 6215
Suffix Open (No Seals / No Shields)
Bore Diameter (d) 75 mm
Outer Diameter (D) 130 mm
Width (B) 25 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard (P0) / P6 / P5 Available
Cage Material Stamped Steel (Standard)
Dynamic Load Rating (Cʳ) 66.3 kN
Static Load Rating (C₀ʳ) 49.0 kN
Limiting Speed (Grease) 5,000 r/min
Limiting Speed (Oil) 6,000 r/min
Weight (approx.) 1.18 kg

Interchange Part Numbers

The 6215 conforms to international ISO dimensional standards and serves as a high-quality replacement for equivalent models from all major global manufacturers:

  • SKF: 6215
  • NSK: 6215
  • FAG: 6215
  • NTN: 6215
  • KOYO: 6215
  • TIMKEN: 6215
  • MRC: 6215

Design & Configuration

For applications where lubrication retention or contamination protection is required, we also supply the 6215-ZZ (metal shields) and 6215-2RS (rubber seals). For high-temperature or high-vibration scenarios, C3 or C4 internal clearance versions are available from stock.

"The 6215 open ball bearing offers the reliability and load-carrying capacity needed for large-scale industrial shafts. Its precision construction and 75mm bore make it a preferred choice for heavy-duty electric motors and gearboxes."

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