JDB 650 Solid Lubricant Bearing Bushings: High-Performance Self-Lubricating Bearings in Standard and Custom Sizes

The JDB 650 solid lubricant bearing is a high-performance self-lubricating bearing that combines the durability of copper alloy with the self-lubricating properties of solid lubricants. Designed for heavy-duty applications, it is ideal for environments where high load, temperature, or maintenance restrictions demand a reliable, low-maintenance solution. Below are some key details about the JDB 650 bearing’s composition, performance parameters, applications, and sizing options.

Material Composition and Lubrication

The JDB 650 bearing is crafted from high-strength brass alloy (ZCuZn25Al6Fe3Mn4), which offers excellent wear resistance and load-bearing capacity. The solid lubricant inserts, which can include high-purity graphite, MoS₂ (molybdenum disulfide), or other additives, deliver enhanced self-lubricating performance. The lubricants create a protective layer during operation, ensuring reduced wear on the shaft and extending the life of the bearing.

Performance Parameters

The JDB 650 bearing is engineered to handle extreme conditions, including high loads and temperatures. Key specifications include:

• Static Load Capacity: 250 N/mm²
• Dynamic Load Capacity: 100 N/mm²
• Temperature Range: -40°C to +300°C
• Maximum Sliding Speed: Dry – 0.5 m/s, Grease Lubrication – 2 m/s
• Maximum PV Value: Dry – 1.65 N/mm²·m/s, Oil – 3.25 N/mm²·m/s
• Friction Coefficient: 0.03 to 0.20
• Thermal Conductivity: 60 W/(m·K)
• Thermal Expansion Coefficient: 1.9 × 10⁻⁵ /°C
• Hardness: HB ≥ 210

With twice the hardness and wear resistance of standard copper bushings, the JDB 650 offers significant durability advantages.

Self-Lubricating and Wear-Resistant Properties

The JDB 650 bearing’s solid lubricants work by forming a micro-layer of oil and powder during friction, ensuring optimal lubrication and reducing wear on both the bearing and the shaft. This feature is ideal for applications where regular lubrication is impractical.

JDB 650 self-lubricating bearing Application Areas

These bearings are widely used in high-load, oscillating, or intermittent-motion applications, including automotive production lines, hydro turbines, reservoir gates, and plastic machinery. The JDB 650 is also suitable for extreme environments such as continuous casting machines, injection molding machines, train supports, rolling mill equipment, mining machinery, and marine equipment, where high temperatures, heavy loads, and low speeds are common.

Customizable Size Options for JDB650 bearings

Standard sizes of the JDB 650 bearing typically include an inner diameter (ID) and outer diameter (OD) range of 8mm to 160mm, with multiple length options. Custom sizing options are available to meet specific application requirements, with flexibility in inner and outer diameters as well as lengths. This customization allows engineers to select the ideal bearing dimensions for a precise fit and optimal performance.

Characteristics of Solid Lubricants

The JDB 650 bearing includes various solid lubricants to meet different operational needs:

• High-Purity Graphite + Additives: Provides excellent wear resistance and chemical stability for temperatures below 400°C. Suitable for general machinery and atmospheric conditions.
• SL4 + MoS₂: Delivers a very low friction coefficient and excellent water-lubrication capabilities for temperatures below 300°C, ideal for applications like marine, hydraulic gates, and food and beverage machinery.

Choosing the Right jDB Solid Lubricant Bearing Size

When selecting a JDB 650 bearing size, consider the specific requirements of your application, such as load conditions, operating environment, and shaft dimensions. Manufacturers can provide custom sizing to ensure that the bearing meets your exact specifications.

The JDB 650 Solid Lubricant Bearing is a versatile, durable solution for demanding industrial applications. Its self-lubricating properties, coupled with a customizable size range, make it a valuable choice for engineers seeking long-lasting, maintenance-free bearings that can withstand harsh conditions.