**Rolling Bearing Temperature** Home > Bearing Knowledge > Rolling Bearing Temperature *Created on 2018/5/16* var cpro_id = "u3440131";

Rolling Bearing Temperature

---

/*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';

The temperature of a rolling bearing is influenced by several key factors, including the load it carries, its rotational speed, and the type of lubricant used. The friction within the bearing, as well as the surrounding environmental conditions, also play a significant role in determining its operating temperature. **Main Factors Affecting Bearing Temperature:** 1. **Bearing Load:** Higher loads generate more heat due to increased internal friction. 2. **Speed:** As the rotational speed increases, so does the heat generated from friction. 3. **Frictional Torque:** This is the resistance that occurs between moving parts within the bearing. 4. **Lubricant Type and Viscosity:** The viscosity of the lubricant affects how effectively it can reduce friction and dissipate heat. 5. **Installation Quality:** Improper installation or housing design can lead to uneven stress distribution and higher temperatures. 6. **Ambient Temperature:** The surrounding environment's temperature directly impacts the bearing’s thermal behavior. When the cooling rate exceeds the heating rate, the bearing operates at a stable temperature. In most applications, bearings operate at relatively low temperatures because of lighter loads and lower speeds, allowing for efficient heat dissipation through the surrounding air and the metal components. **Heat Generation Calculations:** - **Friction Power Loss:** Hf = 1.047 × 10⁻⁴ × n × M (where M is the friction torque). - **High-Speed Bearings:** Heat generation in each contact zone is calculated as Hfj = (∫ vk dFkj) / J, where J is the unit conversion coefficient from Nm/s to W. - **Rolling Elements and Raceways:** The heat generated by the rolling elements and raceways is given by Hfj = (∫ ωsj dMsj) / J. **Types of Friction in Rolling Bearings:** 1. **Elastic Deformation:** Caused by the elastic lag of the rolling elements. 2. **Slip Due to Surface Irregularities:** Small surface imperfections cause relative motion between the rolling elements and raceways. 3. **Sliding Due to Deformation:** The deformation of the contact bodies leads to sliding friction. 4. **Frame and Rolling Element Interaction:** Sliding between the cage and rolling elements, as well as between the cage and the inner/outer rings. 5. **Seal Friction:** Seals can create additional friction, especially under high-speed conditions. **Dynamic Effects at High Speeds:** Under high-speed or high-acceleration conditions, the dynamic effects on the bearing frame become significant. These include: - Impact forces between the cage and rolling elements. - Normal and frictional forces between the cage and the raceway. - Forces caused by unbalanced mass centers. - Inertial forces and other resistive forces such as those from lubricant viscosity and grease mixing. **Frictional Torque Calculation:** The total frictional torque (M) in a bearing is the sum of three main components: - **Load-Induced Torque (M₁):** M₁ = f₁ × Fβ × dm, where f₁ depends on the bearing type and contact angle. - **Viscous Friction Torque (Mv):** Mv = 10⁻⁷ × f₀ × (v₀n)¹·⁵ × dm³ (for v₀n ≥ 2000). - **Roller and Rib Friction Torque (Mf):** Mf = ff × Fa × dm. **Total Frictional Torque:** M = M₁ + Mv + Mf --- **Related Bearing Knowledge:** - *Jinan Steel Bearing Management Status and Improvement Measures (1)* - *The Effect of NSK Bearing Cleanliness on Noise* - *KOYO Bearing Limit Speed and Friction Factor Considerations* This article is sourced from [China Bearing Network](http://). Please cite the source when sharing. Previous: The Oscillating Motor Bearing Housing of the Dismantling Device Next: The Hardness of Rolling Bearings

Drawn Sink

machine sink, pressed drawn sink, machine made kitchen sink

Jiangmen MEIAO Kitchen And Bathroom Co., Ltd. , https://www.meiaosink.com