Bearing 688zz

The 688Z is a generic steel ball bearing characterized by its dimensions, material, and shielding type. Commonly used in a variety of applications, including electric motors, office equipment, and hobby electronics, this bearing provides low friction and smooth rotation. The "Z" in 688Z indicates a single metal shield on one side, which offers some protection against dust and small debris while allowing the bearing to run with minimal resistance.

Key Specifications for 688Z Steel Bearing

General Specifications

1. Type: Deep-groove ball bearing
2. Material: High-carbon steel
3. Shielding: "Z" indicates a metal shield on one side only (single-shielded)
4. Dimensions (Metric):
5. Inner Diameter (ID): 8 mm
6. Outer Diameter (OD): 16 mm
7. Width (Thickness): 5 mm

Performance Characteristics

1. Load Capacity: Moderate load capacity, suitable for light to medium-duty applications
2. Speed Rating: Can typically handle moderate speeds, but the exact speed limit depends on application conditions and lubrication
3. Noise Level: Low noise level, especially when used with suitable lubrication
4. Lubrication: Usually pre-lubricated for maintenance-free operation

Key Features

1. Compact Size: The small dimensions make it suitable for devices with limited space
2. Corrosion Resistance: Steel construction provides a good balance of strength and corrosion resistance
3. Single Shield: Provides partial protection from contaminants on one side, reducing drag for free rotation
4. Low Friction: Deep-groove design allows for smooth operation and low friction

Applications

1. Small Electric Motors: Commonly used in motors for fans, cooling, and general machinery
2. Office Equipment: Suitable for printers, copiers, and other equipment where compact bearings are needed
3. Hobby Applications: Used in radio-controlled vehicles, drones, and similar applications where low-resistance bearings are preferred
4. Mechanical Systems: Useful in systems with rotational elements requiring consistent low-friction performance

The 688Z is a versatile and economical bearing choice, ideal for low- to moderate-speed applications where basic shielding and moderate load handling are sufficient. Its availability and compatibility make it a go-to option in many mechanical and electronic projects.