Deep Groove Ball Bearings Single Row 6019M/C4 SKF

The SKF 6019M/C4 is a high-performance single-row deep groove ball bearing, designed for medium to high-speed industrial applications with heavy radial loads. It integrates precise dimensional control, premium material selection and advanced manufacturing technology, ensuring reliable operation and long service life in harsh working environments. The following is a comprehensive technical overview.

1. Detailed Dimensional Parameters: Conforming to international bearing standards, the bearing has an inner diameter (d) of 95mm, outer diameter (D) of 145mm, and width (B) of 24mm. The chamfer size (r) is 1.5mm, with a tolerance grade of P0 (ISO 492). Its basic dynamic load rating is 63.7kN, basic static load rating is 54kN, reference speed is 9500r/min, and limiting speed is 6000r/min. It adopts a cylindrical bore and has no filling slots, with a C4 radial internal clearance for enhanced adaptability to thermal expansion.

2. Specific Material Description: Inner ring, outer ring and rolling elements are made of high-carbon chromium bearing steel (AISI 52100/SUJ2), which is refined by vacuum degassing technology to reduce harmful impurities. After heat treatment, it reaches a hardness of 60-64 HRC, featuring excellent wear resistance, fatigue strength and dimensional stability. The retainer (marked with suffix M) is made of brass, which has good thermal conductivity, impact resistance and wear resistance, ensuring stable operation at high speeds.

3. Core Processing Technology: The production process includes closed die forging, CNC turning, controlled atmosphere heat treatment, precision grinding and superfinishing. Closed die forging ensures dense internal structure and continuous metal flow; CNC turning achieves Ra ≤ 0.4μm surface roughness; heat treatment adopts nitrogen-hydrogen protective atmosphere to prevent oxidation and ensure uniform hardness. Precision grinding with CBN砂轮 and superfinishing reduce the raceway surface roughness to Ra ≤ 0.05μm, minimizing friction and noise.

4. Service Life: Under standard working conditions (constant speed of 3000r/min, radial load of 20kN, proper lubrication and clean environment), the L₁₀ basic rated life (90% reliability) is 25,000 operating hours, calculated in accordance with ISO 281 standard. Key influencing factors include lubrication quality, pollution level, installation accuracy and load magnitude; poor lubrication or excessive contamination can reduce service life by 30-50%.

5. Application Scenarios and Industries: It is widely used in general industrial machinery, large electric motors, generators, pumps, ventilation equipment and plastic/rubber processing machinery. It is particularly suitable for industries such as mechanical manufacturing, petrochemicals and light industry, due to its high load capacity, moderate speed performance and good adaptability to common industrial operating conditions. It is also applied in cleaning machinery, flash drying machines and binding equipment for its stable and low-maintenance performance.

6. Basic Maintenance Requirements: The recommended maintenance cycle is 2000 operating hours. Lubrication: Use lithium-based grease (NLGI 2) with a filling amount of 10-30% of the bearing free space; re-lubricate every 1500-2000 hours. Cleaning: Remove surface dust and old grease with clean gasoline before maintenance. Regular inspection: Check for abnormal noise, temperature rise and grease leakage; replace lubricant immediately if it turns black or deteriorates.

7. Installation Precautions: Pre-installation: Keep the installation area clean, check the shaft and bearing seat for burrs, and remove the bearing’s anti-rust oil if incompatible with the lubricant. Installation: Apply a thin oil film on the fitting surface, use a press to apply force evenly on the inner ring (avoid tapping), ensure coaxiality tolerance ≤ 0.02mm. Fastening torque: 80-100N·m for the bearing seat bolt. Post-installation: Rotate the bearing manually to check for jamming; measure temperature after 30 minutes of operation (normal temperature ≤ 70℃). Safety: Wear protective gloves and goggles; use special lifting tools for handling.