20Pcs F4-9M Thrust Ball Bearings, 4Mm X 9Mm X 4Mm Single Row Roller, ABEC3

Description:[Material] - Features chrome steel washers for high-temperature tolerance and superior hardness, combined with brass rolling elements and a brass cage for smooth operation and added durability. Comes with two washers to ensure smooth rotation of objects.[Features] - Standardized dimensions ensure effortless installation, disassembly, and maintenance. Low friction and low power consumption result in higher mechanical efficiency. Designed for low-speed high-precision applications with reliable radial load capacity, delivering stable performance, minimal wear, and long service life.[Wide Application] - Suitable for various low-speed high-precision uses including precision instruments, machine tools, pumps, jacks, rotating assemblies, measuring equipment, optical devices, scientific equipment, and other precision mechanical assemblies.[Maintenance Tips] - Ensure a clean working environment and timely lubrication to maximize performance and longevity.Specifications:Model: F4-9MWasher Material: Chrome SteelCage Material: BrassRolling Element Material: BrassAccuracy Class: ABEC3Overall Size: Bore Diameter: 4mm / 0.16", Outer Diameter: 9mm / 0.35", Thickness: 4mm / 0.16"Package Content: 20pcs x Thrust Ball Bearings