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1. Introduction: What Are 6800 Series Shielded Miniature Bearings?
6800 Series Shielded Miniature Deep Groove Ball Bearings are high-precision, thin cross-section micro ball bearings engineered for compact, space-limited industrial and commercial applications. Also widely known as precision micro ball bearings or thin wall miniature bearings, the 6800 ZZ series stands out for its ultra-slim structure, low friction operation, and reliable dust-proof performance.
Unlike standard deep groove ball bearings, these thin cross section miniature bearings feature a minimized outer diameter and narrow width while maintaining excellent load capacity and rotational stability. Equipped with double metal shields (ZZ shielding structure), shielded 6800 miniature bearings effectively block fine dust, debris, and particulate contamination without increasing operational friction, making them the most cost-effective solution for light-load, high-speed precision equipment.
Manufactured with premium GCr15 bearing steel or optional stainless steel materials, our high-precision 6800 series miniature bearings comply with international metric standards, supporting ABEC 3 and ABEC 5 precision grades to meet strict tolerance requirements of modern precision machinery.
2. Core Structural Features of 6800 Series Shielded Miniature Bearings
The superior performance of 6800 series shielded miniature deep groove ball bearings stems from their optimized structural design, tailored for miniature precision scenarios. Below are their core competitive advantages compared with ordinary micro bearings:
2.1 Ultra-Thin Cross Section & Space-Saving Design
As typical thin wall miniature ball bearings, the 6800 series adopts an ultra-slim cross-sectional structure. With standard dimensions of 10mm bore, 19mm outer diameter, and 5mm width, these bearings save maximum installation space and reduce equipment weight, which is irreplaceable for compact miniaturized devices. This feature makes them the top choice for designers pursuing lightweight and miniaturized mechanical structures.
2.2 Double Metal Shielded (ZZ) Dust-Proof Structure
The shielded design (ZZ double metal shields) is the core advantage of 6800 series micro bearings. Different from 2RS rubber sealed bearings, metal shields provide non-contact protection: they prevent external dust, lint, and tiny particles from entering the bearing interior while ensuring ultra-low friction and high-speed rotation. This structure avoids the heat generation and resistance issues caused by rubber contact seals, perfectly adapting to long-term high-speed operation.
2.3 Low Friction, Low Noise & Stable Operation
All precision micro ball bearings in the 6800 series are precisely polished and pre-lubricated with high-temperature, low-viscosity grease. The optimized deep groove raceway structure ensures uniform stress distribution, achieving low noise, low torque, and smooth rotation. No abnormal jitter or noise occurs during long-term continuous operation, meeting the silent working requirements of precision instruments and electronic equipment.
2.4 High Precision & Durable Material
We adopt high-purity GCr15 bearing steel as the mainstream material, with optional stainless steel for corrosion-resistant scenarios. After integral quenching and precision grinding, the bearings feature high hardness, strong wear resistance, and long service life. Custom ABEC3/ABEC5 high-precision grades are available to support high-precision positioning and rotating scenarios.
3. Key Parameters & Common Models
Our 6800 series shielded miniature bearings follow international metric standards, with complete model specifications and customizable precision grades. The core parameters of the mainstream 6800ZZ model are as follows:
Model: 6800ZZ
Bore Diameter: 10mm
Outer Diameter: 19mm
Width: 5mm
Structure: Deep groove ball, double metal shielded (ZZ)
Precision Grade: Standard ABEC3, optional ABEC5
Material: GCr15 Chrome Steel / Stainless Steel
Lubrication: Pre-greased for long-term use
Load Type: Radial load + light axial load
We also support full-series customized production of 6802, 6803, 6804 and other thin-section miniature bearings to meet diverse dimensional needs of customers.
4. Wide Applications of 6800 Series Shielded Miniature Bearing
Thanks to their compact size, high precision, and reliable dust-proof performance, thin cross section miniature bearings are widely applied in high-precision, space-constrained industries, covering industrial automation, medical equipment, consumer electronics, and intelligent devices:
Micro Motors & Small Motors: Ideal for miniature drive motors, vibration motors, and fan motors, ensuring high-speed silent operation
Medical Equipment: Used in portable medical devices, surgical instruments, and detection equipment, supporting stable and safe precision operation
Industrial Robotics & Automation: Suitable for robot joints, miniature linear slides, and automated sensor rotating parts
Precision Instruments & Optical Devices: Applied in encoders, optical instruments, and testing equipment to guarantee high-precision rotation and positioning
3D Printers & Smart Devices: Core rotating accessories for 3D printer guide rails, smart home appliances, and wearable devices
Office & Electronic Equipment: Used in printers, scanners, and precision electronic transmission structures
5. 6800ZZ vs 6800-2RS vs Open Type: How to Choose?
Many buyers confuse the three common types of 6800 series miniature bearings. Here is a clear selection guide for different working conditions:
5.1 6800ZZ (Shielded Metal Cover)
Best for general dust-proof, high-speed, low-friction scenarios. Metal shields avoid contact friction, support ultra-high-speed rotation, and block conventional dust. Suitable for indoor, dry working environments such as micro motors and instruments. This is our most popular shielded miniature bearing model.
5.2 6800-2RS (Rubber Sealed)
Features full waterproof and dustproof performance with rubber contact seals, but slightly higher friction. Suitable for humid, dusty, and slightly harsh working environments, not for extreme high-speed operation.
5.3 Open Type 6800
5.3 Open Type 6800
No protective cover, ultra-low friction, easy for secondary lubrication. Only suitable for clean, dust-free laboratory environments or equipment with independent protective structures.
6. Why Choose Our Precision 6800 Series Miniature Bearings?
As a professional manufacturer ofminiature deep groove ball bearings, we focus on the R&D and production of thin-section micro bearings, providing global customers with high-cost-effective bearing solutions:
Strict Precision Control: All products pass precision testing, supporting ABEC3/ABEC5 high-precision customization, zero error for matching installation
Premium Raw Materials: GCr15 bearing steel and stainless steel options, high wear resistance and long service life
Stable Mass Supply: Complete production line, sufficient inventory, support OEM/ODM customization and bulk wholesale
Professional After-Sales: Strict quality inspection before delivery, support technical parameter consultation and application scheme matching5.3 Open Type 6800
No protective cover, ultra-low friction, easy for secondary lubrication. Only suitable for clean, dust-free laboratory environments or equipment with independent protective structures.
6. Why Choose Our Precision 6800 Series Miniature Bearings?
As a professional manufacturer ofminiature deep groove ball bearings, we focus on the R&D and production of thin-section micro bearings, providing global customers with high-cost-effective bearing solutions:
Strict Precision Control: All products pass precision testing, supporting ABEC3/ABEC5 high-precision customization, zero error for matching installation
Premium Raw Materials: GCr15 bearing steel and stainless steel options, high wear resistance and long service life
Stable Mass Supply: Complete production line, sufficient inventory, support OEM/ODM customization and bulk wholesale
Professional After-Sales: Strict quality inspection before delivery, support technical parameter consultation and application scheme matching
