The L44649 bearing is a single-row, deep-groove ball bearing widely used in various industrial and automotive applications. Its compact design, high load capacity, and long service life make it an ideal choice for demanding operating conditions. This article provides a comprehensive overview of the L44649 bearing specifications, covering its dimensions, tolerances, material properties, and performance characteristics.
Dimension | Value | Tolerance |
---|---|---|
Bore Diameter (d) | 40 mm | h6 |
Outer Diameter (D) | 72 mm | e6 |
Width (B) | 14 mm |
The bearing has a close radial internal clearance (CN) to ensure minimal axial play and high running accuracy. The permissible radial clearance (CR) ranges from 0.015 to 0.035 mm, allowing for proper lubrication and thermal expansion during operation.
The L44649 bearing is typically manufactured from high-carbon chromium steel (AISI 52100), which provides:
The basic dynamic load rating (C) of the L44649 bearing is 19,200 N, which represents the constant radial load that the bearing can support for 1 million revolutions at a 90% reliability level. The basic static load rating (C0) is 41,000 N, indicating the maximum static radial load that the bearing can withstand without permanent deformation.
The maximum grease-lubricated speed for the L44649 bearing is 15,000 rpm. However, the limiting speed may be lower depending on operating conditions, such as temperature and lubrication type.
The bearing can operate within a temperature range of -40 to +120°C. In high-temperature applications, special high-temperature grease or oil lubrication should be considered.
To optimize the performance and longevity of the L44649 bearing, follow these effective strategies:
What is the difference between an L44649 bearing and an L44649-2RS bearing?
- The L44649-2RS bearing has additional rubber seals on both sides to protect against contamination and moisture.
What type of grease should I use for an L44649 bearing?
- Use high-quality ball bearing grease with a lithium-base or synthetic base, recommended by the bearing manufacturer.
How long should an L44649 bearing last?
- With proper lubrication and maintenance, the bearing can last for several years or even decades, depending on the operating conditions.
Can I use an L44649 bearing in a high-temperature application?
- Yes, but use high-temperature grease or oil lubrication and ensure the operating temperature stays within the recommended range.
How often should I re-lubricate an L44649 bearing?
- Re-lubricate according to the manufacturer's recommendations, typically every 3-6 months for continuous operation and less frequently for intermittent use.
What are the signs of a failing L44649 bearing?
- Excessive noise, vibration, heat, or play indicate potential bearing failure and require prompt attention.
Maximize the performance and reliability of your machinery by choosing the right L44649 bearing for your application and adhering to the best practices outlined in this guide. Contact a reputable bearing supplier to discuss your specific requirements and ensure optimal performance.
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