SKF QJ 219 N2MA Bearing Technical Data Sheet

1. General Description: The SKF QJ 219 N2MA bearing is a four-point contact ball bearing designed to accommodate radial and axial loads. It features a 35° contact angle, which allows it to effectively handle combined loads. This bearing is particularly useful in applications where compact mounting and the ability to accommodate high loads are required.

2. Materials and Construction:

• Cage: The cage is made of solid brass, which offers high strength and good durability.
• Balls: Balls are typically made of steel, a material that ensures strength and durability.
• Coating: May feature surface treatments to increase corrosion resistance.

3. Dimensions and Weight:

• Internal diameter: 95 mm
• External diameter: 170 mm
• Height (width): 32 mm
• Weight: 3.3 kg

4. Mechanical Features:

• Internal Clearance: Normal CN clearance, designed for general applications.
• Contact Angle: 35°, optimal for handling high axial loads.
• Load Capacity: Designed to support combined loads, reducing friction and improving operating efficiency.

5. Load Formula: To calculate the maximum load a bearing can support, the bearing life formula can be used:

$$L$$

Where:

• L10L_{10} $L$ 10 ​=
• CC $C$ = basic dynamic load (N)
• FF $F$ = applied load (N)

6. Areas of Use: This bearing finds application in various sectors, including:

• Automotive industry
• Industrial machinery
• Mechanical transmissions
• Power plants and turbines

7. Brand and Manufacturer: SKF is a leading brand in the bearing industry, founded in 1907 in Sweden. The company is known for its innovation and product quality, offering a wide range of solutions for industrial applications. SKF is dedicated to research and development, offering high-tech and sustainable products.

8. Installation: The QJ 219 N2MA bearing must be installed to ensure proper alignment and support. It is recommended to use appropriate tools to avoid damage during installation. It is recommended to:

• Clean the mounting surfaces thoroughly.
• Use an appropriate lubricant to ensure proper lubrication.
• Mount the bearing in a housing that can ensure its stability.

9. Advantages of Stock Purchase: Buying SKF bearings in stock offers numerous advantages:

• Immediate availability: Reduces downtime for quick replacements.
• Competitive costs: By purchasing in large quantities, you often get a better unit price.
• Reliability: SKF is synonymous with quality and durability, ensuring high performance over time.

10. Average Price: The average price of the SKF QJ 219 N2MA bearing is approximately €350.53 (excluding VAT), but may vary depending on the supplier and the quantity ordered.

This datasheet provides a broad overview of the SKF QJ 219 N2MA bearing, highlighting its features and applications, making it an excellent choice for those seeking reliability and performance in their work.