Deep Groove Ball Bearings: The Core Component of Industrial Motion

Deep groove ball bearings represent the most versatile and widely-used type of rolling element bearings, renowned for their simple design, cost-effectiveness, and maintenance-friendly operation. As the ideal solution for simultaneously handling radial and axial loads, modern deep groove ball bearings achieve极限 speeds of tens of thousands of RPM with friction coefficients as low as 0.0015, playing a critical role in ensuring efficient and stable operation across electric motors, automotive systems, household appliances, and industrial equipment.

• Low friction, low operating temperature, low noise, low vibration

• High speed of revolution

• High quality and performance for your application

• ADAPTS to radial and axial loads in both directions

• A wide range of greases for most conditions, including food grade greases, high temperature greases and solid oils

• Improves reliability and extends the life of bearings and lubricants

FAQ

Q1: What's the difference between deep groove and angular contact ball bearings?

A: Deep groove bearings have 0° contact angle, primarily for radial loads with limited bidirectional axial capacity. Angular contact bearings feature 15°, 25°, or 40° contact angles designed for high single-direction axial loads, typically used in pairs. Deep groove bearings offer lower cost and higher speeds, making them the universal choice.

Q2: How to extend deep groove ball bearing service life?

A: 1) Avoid long-term operation exceeding 30% of dynamic load rating; 2) Ensure clean installation environment to prevent contamination; 3) Select proper grease and replenish periodically; 4) Control operating temperature within allowable range; 5) Use correct installation tools to avoid impact damage.

Q3: Can sealed bearings operate above 10,000 RPM?

A: 2RS sealed bearings typically have 15-20% lower speed limits than open types due to seal friction. For high-speed operation, recommend Z/ZZ shielded or open bearings with oil lubrication.

Q4: Is bearing heating normal in motors? What temperature is acceptable?

A: Bearing temperature rise is normal. Motor bearing temperature should typically stay within ambient +55°C, maximum 95°C. If exceeded, check lubrication, alignment, load, or clearance selection.

Q5: What's the difference between 6205 and 6305 bearings? How to choose?

A: Both have 25mm bore, but 6305 has 62mm OD and 17mm width, with ~40% higher load capacity than 6205 (52mm OD, 15mm width). Choose 6305 when space allows and loads are higher; select 6205 for space constraints or higher speed requirements.